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Brad Thompson, AA1IP

…Offering Surplus “Sunset Technology” Electronic Components And Literature

From  My Personal Collection...

P.O. Box 307, 202 Whitaker Rd.

Meriden, NH   03770-0307   USA

Voice: (603) 469-3351    Fax: (603) 469-3917

E-mail: brad.thompson@valley.net

Hello—

 

If you haven’t previously ordered from me, here are a few details. I offer electronics builders NOS (new old stock) semiconductors, electronic and RF components. If you don't see what you need, e-mail me your want list. Quantities of some items are limited, so please inquire for availability and postage before ordering. I do my best to reply to all e-mail, but if your e-mail account uses SpamCop or another spam-blocking filter, my response to your e-mail inquiry may not make it past the filters.

 

If you purchase NOS tubes or components and find them unsatisfactory upon your inspection, you can return items in as-received condition at your expense for a refund of the purchase price or for replacement (if available) within 14 days. This material is subject to prior sale and is supplied as-is, as new-old-stock (NOS) merchandise unless otherwise stated, with all responsibility for safe and successful application residing solely with the purchaser.

 

Specifications for many items are available on request.

 

I use the U. S. Postal System for shipment, and many small-quantity, small-item orders can ship via first-class mail at modest cost. Please inquire for postage to Canada or to overseas destinations.

 

I honor PayPal, personal checks, and bank- or USPS-issued money orders as payment.

 

This list supplements and overlaps previous lists. Newly listed items include double-double (not a typo) balanced mixers; VC/TCXOs; high-voltage transistors; and a plethora of surface-mount goodies.

***

Recently arrived:

 

Ceramic bandpass filters: Murata p/n SFE5.5MB-TF21, 5.5 MHz center frequency, 150 KHz bandwidth (use for broadband IF amplifiers).

Ceramic dual-notch filters: Murata p/n TPWA02B-5F21 (presents 30-dB notches at 5.5 MHz and 6.5 MHz). Buy 10 pieces of either filter, or 5 pieces of each for $1.00

 

Capacitors: 0.01 uF +/-20%, 1 KV disc ceramics. Open any tube-era edition of the Radio Amateur’s Handbook and you’ll find these used as bypass caps in receivers and transmitters.

Their Z5U temperature characteristic is okay for bypassing, but not for precision filters.

Buy 20 pieces for $1.00

 

Clock Oscillator: IMISG509AXBD by International Microcircuits. A single 44.2 MHz master crystal produces six selectable output freqs. (16.7, 33.3, 40.0, 48.0, 50.0, 60.0 MHz) with a ); includes spread-spectrum EMI-reduction option, and two additional freqs. (3.70 or 11.06 MHz). SMD pkg. My hunch is that you can use other master crystals to produce a plethora of band-edge marker freqs., but I haven’t had time to experiment w/these ICs. Buy ‘em at 6 pcs. for $1.00.

 

 

DRAM Freebies:

uPD416C-2: NEC 16K by 1 DRAMs in DIP packages—need some? They’re yours for the postage! E-mail me for availability.

 

Microprocessor:

N80C51FA: Can you use this ROMless version of the venerable 8051 workhorse microprocessor to produce a display in a topless bar? These feature a PLCC package.  Buy ‘em at $1.00 apiece, and get a free but used, unerased 27C256 or 27C512 EPROM for your application’s code. Don’t forget the modesty label cover for the EPROM’s quartz window.

 

RS-232 Interface:

TC232COE: Dual RS-232 transmitter/receiver and power supply to provide RS-232 levels; m’fd.  by TelCom Semiconductor (now part of Microchip) in 16-lead (wide SOIC) surface-mount packages. $1.00 each

 

DC-DC Converter Modules: Manufactured by CTC (Coil Technology Corporation), these small epoxy-encapsulated modules have wire leads for through-hole PC-board installation. Applications include delivery of isolated (1KV rating), unregulated DC power for analog and other circuits.

There are two types available:

CH-0512: 5 volts in, 12 volts out at 104 mA (0.5 watt output).  $2.00 each

MD-1212D: 12 volts in, +/- 12 volts out at 42 mA each (1 watt output). $2.00 each

 

TTL ICs in DIP packages: these just in—a large batch of assorted TTL of various families and functions. Here are a few part numbers. Mix or match at 10 pieces for $1.00 while they last!

 

74AS02N: Quadruple two-input positive- NOR gates

74F373N: Octal D-input transparent latch (3-State);

74AS374N: Octal D-type, edge–triggered flip-flops w/tri-state outputs

74ALS574N: Octal D-type, edge–triggered flip-flops w/tri-state outputs

 

SIP Connectors (all have 0.1-inch socket/pin to socket/pin center spacing):

 

Mill-Max 801-93-050-10-001 (like Digi-Key ED7150-ND): 50-pin SIP socket w/machined pins and solder tails; 0.275 inches high. Scored so that you can snap to the length you need. $1.50 each, or buy four  50-pin strips. for $5.00.

 

Mill-Max 364-10-132-00-580000 SIP snappable interconnect header, low-profile (insulator is 0.050 inches high). Features 32 gold-plated pins 0.018 inch dia. on 0.100 centers. Single row of pins solders for through-hole mounting and/or plugging into DIP socket. $2.00 each,  or buy three pcs. for $5.00.

 

Mill-Max 315-XX-1yy-41-001000 32-pin SIP low-profile socket w/machined pins and solder tails; 0.225 inches high. Scored so that you can snap to the length you need. $1.20 each, or buy six pcs. for $5.00.

 

*    *    *

Hex Standoffs: RAF Hdwe., p/n 2024256A aluminum. Measures 1/8 inch across, 3/8 inch high, threaded for a 2-56 screw all the way through. Buy 20 pcs. for $1.00

 

2N5770 Small-signal RF trnstr., TO-92 leaded pkg.,  Vceo=15V, Vcbo = 30V,  Ic = 50 mA, fT 900 MHz-1.8 GHz. Pd = 350 mW max. Buy 12 pcs. for only $1.00

 

 

 

PIN Diodes: BAR65-03W, m’fd. By Infineon. Series inductance is 1.8 nH; Ct = 0.9 pF max. at 1 mHz and –1V. bias; Reverse parallel resistance 700K at 1 MHz and 0 v. bias.; Forward resistance 1 ohm at 1 mA forward current and 100 MHz. Charge-carrier lifetime is 80 nSec. Full specs are available. SOD323 package. Buy 12 pcs. for $1.00

 

Zener diodes: p/n SML4763, rated for 91 volts +/- 10% at 2 mA test current, or at 1 watt dissipation (10 mA max. Zener current). Surface-mount case size that's large enough to attach leads. Buy 20 pieces for $1.00

Zener diodes: p/n 1N5955B, rated for 180 volts +/- 5% at 2.1 mA test current, at 1.5 watts dissipation (8 mA max.Zener current). Axial leads. Buy 20 pieces for $1.00

***
Stabilize the filament(s) of a 1R5, 3V4, etc. with a low-dropout voltage regulator: try an LF15CDT by ST Microelectronics. Its output is 1.5V +/- 2% at 1 A max., input dropout margin is 0.2V typ. at 0.15A, 1V at 1A. These are three-lead D-Pak surface-mount devices (easily handled) and do not include the inhibit function found in their four-or five-legged cousins. Buy 5 pcs. for  $1.00

***

Diode, Zener, 1N4690, DO-35 with formed, trimmed leads for PC insertion. Rated at 5.6V +/- 5% at 50 microamperes—that’s a lower-than-usual current rating for regulation, making these diodes well suited to micropower applications. Buy 25 pcs. For $1.00

***

Zener Diodes: Motorola p/n SZ2648. These measure 39V and are 500-milliwatt, glass-packaged axially-leaded house-numbered parts with formed leads. Motorola’s Taiwanese artists painstakingly shaped each diode’s anode lead into a U-shaped hairpin, applied a soothing earthtoned insulation coating to the hairpin, and then precisely adjusted the lead spacing to

0.2 inches on centers, thus transforming these doughty axial components into radially-leaded devices. Buy ‘em at 20 pieces for $1.00

***
...Or would you rather have gas?<g>   Neon lamp: NE-48/B9A, dual-contact large bayonet base. Used in some models of the BC-348 and BC-224, and also in the USN ARB (CRV-46151) receivers as a voltage regulator.  Rated for 90 VDC nominal breakdown at 2 mA. These are recent NOS made by Chicago Miniature Lamp Works in Japan. Only eight pcs. are avail. at $1.50 each.
***

Connecting electrolytic caps in series for higher-voltage operation? Don't forget to shunt each capacitor with a voltage-equalizing resistor. Unfortunately, carbon composition resistors' values can drift with age and heat, and smaller wattages are rated for only 350 or 250 volts.
As a better alternative, these flame-proof metal-oxide film resistors can withstand overloads that make carbon comps go up in smoke.
Only one value is available: 100K ohms +/-5%; rated for 5 watts dissipation at 25 C, or 3 watts dissipation at 70 C. Maximum working voltage is 500 VDC, or 4.5KV peak pulse. Temperature coefficient of resistance is +/- 100 ppm typical, +/-200 ppm maximum. Complete
specifications are available on request. Dimensions are 0.95 inches long by 0.32 inches diameter. The leads are 0.031 inches in dia. (approx. AWG #20). Buy 8 pieces for only $1.00

***
Need electrolytics for series-connection experiments? These are NOS Panasonic (Japanese-manufactured) radial-lead (snap-in PC-board pins on 10 mm centers), PC mounted TS-HA-series capacitors rated at 270 uF +/- 20% at 250 VDC, -40C to +105C. Dimensions are 22 mm diameter by 35 mm high. Connect three caps in series to yield 90 uF at 750 VDC (max.)  Buy 'em at $.50 each, or three for $1.00 to get 90 uF at 750 VDC. Use the 100K shunt resistors described above.

 

 

 

More electrolytics: These are Nichicon radial-wire-lead parts rated at 68 uF +/- 20%, 160VDC, and –40C to +105C operation. These measure approximately 0.65 inch high by 0.72 inch diameter. Connect three caps in series to yield 22 uF at 480 VDC (max.). You can use 100K -watt resistors for equalization in this instance. Nichicon p/n URZ2C680MHH1TN. Buy 'em at $.50 each, or three for $1.00


***
Small-signal, high-voltage N-channel MOSFETs: Siemens BSS-124 in TO-92 pkg. BVds (breakdown voltage drain to source) = 400 V max., Id (drain current) 120 mA max. continuous, 480 mA pulsed, 1 watt dissipation max.; gfs (transconductance) = 0.19 S (Siemens) typ.
Cin = 90 pF, Cout = 10 pF, Crss = 4 pF (typ.) Buy 8 pcs. for $1.00
***
Transistor, Motorola MSB710: a surface-mount PNP transistor rated for 60V Vcbo, 500 mA max., 200 milliwatts dissipation. 120<hFE<240, Vce = 0.6V at Ic = 300 mA. Cob = 15 pF. Motorola doesn’t mention any value for Ft, alas. Special: buy a one-foot-long taped-and-reeled strip for $.99— That’s approximately 72 transistors for just under one buck.

***

RCA Phono Jacks, printed-circuit mounted—three styles are available:

 

One jack, right-angle mounted: buy eight for $1.00; use these for low-level RF and bankrupt a coax-connector manufacturer.

 

Two jacks, side by side, right-angle mounted: buy four two-jack assemblies for $1.00

 

Eight phono jacks arranged in two rows of four jacks, right-angle mounted (or use mounting holes): buy four eight-jack assemblies for $1.00

***

25-pin D-Subminiature jack (female): PC rt.-angle mount, or use jack screws and solder wires to the pins: buy ten for $1.00

***

Phooey on LCDs-- Lite-On seven-segment red LED display, common-cathode, black face, right-hand decimal point, 10-pin DIP pkg.; P/N LTS313AR: buy 12 for $1.00       

***

Stereo patch/interconnect cable, 6 ft. long w/ 3.5 mm (1/8-inch) molded-on stereo male plug on either end. Constructed w/served shield for excellent flexibility. Buy ‘em at $1.00 each QUANTITY IS LIMITED.

***

Stereo jack, 3.5 mm, PC-mounted, accept a stereo male plug. No internal switch contacts. Buy ‘em at 8 pcs. for $1.00

***

Capacitor, 15 pF +/- 5%, 50V, N150 tempco., disk ceramic w/radial leads, Matsushita p/n

ECC-F1H150JP: Buy 10 pcs. for $1.00, or bags of 200 pcs. for $10.00

***

Capacitor, feedthrough, 1000 pF +/-10%, 500V. Erie 2960(?) type mounts in a 7/16” hole.

Beautifully gold-plated, glass-sealed, new and priced at only $1.00 each while they last. See www.surplussales.com Items 2960-002 for the gold plating, and FTBT-102 for the mechanical configuration. Note their prices, too.

***

Capacitor, 220 nF +/-10%,200V, X7R dielectric. 18 by 12 (1812) SMT pkg., taped and reeled.

Novacap p/n 1812b224k201nxtm. Buy 10 pcs. for $1.00

***

Capacitor, 4.7 uF +/- 10%, 63V.; dissipation factor 1.0% max @ 1KHz, 1.6% max. @ 10 KHz, radial leads. Specs avail., or see www.towa-el.com.jp. Buy 5 pcs. for $1.00

***

 

 

Capacitor, 15 pF +/- 5%, 500V.; Surface-mount 0.110 by 0.110 in. (nominal) footprint. American Technical Ceramics p/n ATC100B 150JW 500X. Buy 6 pcs. for $1.00

***

Capacitor, dawgbone, er, dogbone ceramic: Assorted Western Electric surplus radial-leaded parts, mostly in the under-50 pF range and many with +/-1% tolerance markings. Go to… http://www.surplussales.com/capacitors/RF-TempDogbone.html

…To view a picture. If you can’t find what you want, buy a 100-piece assortment here.

Be prepared to spend some time interpreting the tiny color-coded dots on the white-bodied parts.

A magnifier is helpful, too, as is an AADE Capacitance meter, or an M3 (M Cubed) Electronix component analyzer. But first, buy a 100-piece assortment for $2.00 so that you’ll have something to sort.

***

Transistor, ZTX-300 Zetex small-signal NPN; Vce, 25V ; Ic, 500 mA max. 50<Hfe <300; Ft 150 MHz min. E-line (TO-92 compatible) pkg. w/leads, Good general-purpose device. Buy 20 pcs. for $1.00

***

Inductor, surface-mount, 22 uHy +/-10%, Q = 10 min., SRF=18 MHz min., Rdc= 0.9 ohm, 370 mA max. Used w/Maxim’s MAX1678 low-voltage DC-DC conv., or as a general-purpose RF choke. Taped and reeled. Buy 8 pcs. for $1.00

***

Crystal, surface-mount: 10.752 MHz series mode. Black four-contact epoxy package marked “10.7 MHz”, but the carton clearly states “10.752 MHz series mode” and “Fox FX499-8”.  These are NOT oscillators. Possible apps include using with a Softrock SDR at a 96 KHz sampling rate to cover the common 10.7 MHz IF. Or, experiment with crystal filters for your next project. Buy six pieces for $1.00

***

Crystal, surface-mount: 8.064 MHz series mode, in snazzy white ceramic/gold-plated package with silver-colored lid marked “FC8.064”, with two gold-plated contacts on the underside. These are NOT oscillators. These may serve in a crystal filter for your next project. Or not. Buy six pieces for $1.00 and find out.

***

Ceramic resonator, 16.00 MHz Murata Cerafil p/n CSA16.00MXZ040-TF01. These have two radial leads for PC-board mounting and no internal capacitors, and thus may be suitable for “pullable” oscillator service. Or, crank your microprocessor with ‘em:

Philips app note…   www.nxp.com/acrobat_download/applicationnotes/AN96103_1.pdf  …discusses using crystals (“X-tals” (sic))  and ceramic resonators to clock 8-bit microprocessors.

Buy 15 pieces for $1.00

***

uPB587G Prescalers by NEC: 50 MHz-1GHZ,  divide by 2, 4, or 8, SO-8 surface-mt., taped and reeled. $2.00 ea.; 3/$5.00

***

Thermistor, negative temperature coefficient (i.e., resistance decreases with increasing temperature). Nominal resistance is 7000 ohms Vishay Dale custom p/n IC-7001 (similar to catalog p/n 2322-645-10/20xx). 1.5-inch uninsulated leads. Buy 10 for $1.00

***

 

Low-power Resistors (0.125 to 0.5 watts) with wire leads:

Resistor, 10.0 ohms +/- 2 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 49.9 ohms +/- 1 pct, 0.25W, RN-55 style, axial leads, taped/reeled, 50 pcs.for $1.00

Resistor, 270 ohms +/- 5 pct, 0.5W, carbon film, axial leads, taped/reeled,      50 pcs.for $1.00

Resistor, 1.15K ohms +/-1 pct, 0.25W, RN-55 style, axial leads, taped/reeled, 50 pcs.for $1.00

Resistor, 1.0K ohms +/-5 pct, 0.125W, carbon film, axial leads, taped/reeled,  50 pcs.for $1.00

Resistor, 1.5K ohms +/-5 pct, 0.25W, carbon film, axial leads, taped/reeled,    50 pcs.for $1.00

Resistor, 3.0K ohms +/-5 pct, 0.25W, carbon film, axial leads, taped/reeled,    50 pcs.for $1.00

Resistor, 5.6K ohms +/- 2 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 10.0K ohms +/- 1 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

 

Low-power Resistors (0.125 to 0.5 watts) with wire leads (continued):

 

Resistor, 20.0K ohms +/- 1 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 40.2K ohms +/- 1 pct, 0.25W, RN-55 style, radial leads, taped/reeled, 50 pcs.for $1.00

Resistor, 100K ohms +/-5 pct, 0.125W, carbon film, axial leads, taped/reeled,  50 pcs.for $1.00

Resistor, 100K ohms +/- 1 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 100K ohms +/-5 pct, 0.5W carbon composition (Allen-Bradley type RC20), axial leads, boxed, 100 for $4.00

 

Resistor, 301K ohms +/- 1 pct, 0.25W, RN-55 style, axial leads, taped/reeled, 50 pcs.for $1.00

Resistor, 649K ohms +/- 1 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 1.0 Megohms +/- 1 pct, 0.25W, RLR07 metal film, axial leads, boxed, 100 pcs.for $2.00

Resistor, 10 Megohms +/- 5 pct, 0.5W, carbon film, axial leads, taped/reeled, 20 pcs.for $1.00

 

Medium-power Resistors (1 to 3 watts) with wire leads:

 

Resistor, 15 ohms +/- 5 percent, NONINDUCTIVE winding, 3 watts; RCL wirewd.Type R135X axial leads. Buy 6 for $1.00

 

Resistor, 18 ohms +/- 5 percent, 2 watts; Allen-Bradley carbon comp. RC420F180J, axial leads, Buy 6 for $1.00

 

Resistor, 20 ohms +/- 5 percent, 2 watts; Dale CW2C14 (RW02S200J003) axial leads, taped and reeled but falling off tapes.. Buy 6 for $1.00

 

Resistor, 20 ohms +/- 5 percent,  watts; RCL wirewd.Type R135X axial leads. Buy 6 for $1.00

Resistor, 40.2 ohms +/- 1 percent, wirewound, 2 watts; Dale RS-2W, 0.5 in formed axial leads. Buy 6 for $1.00

 

Resistor, 140 ohms +/- 1 percent, 2 watts; Dale wirewd, MIL-RWR71S1400FM axial leads. Buy 5 for $1.00

 

Resistor, 1.5K ohms +/- 5 percent, 2 watts; Panasonic ERG-2SK152 nonflammable metal oxide; axial leads; bulk packed. Buy 6 for $1.00

 

Resistor, 1.8K ohms +/- 10 pct, 3 watts; Rockwood wirewd bent axial leads Buy 25 for $1.00

Resistor, 2.0K ohms +/- 5 percent, 2 watts;.Type 20722 axial leads. Buy 6 for $1.00

 

Resistor, 2.7K ohms +/- 5 percent, 3 watts; Clarostat wirewd. Type VC3D axial leads. Buy 3 for $1.00

Resistor, 3.0K ohms +/- 5 percent, 2 watts; Dale wirewd.Type CW-2B axial leads. Buy 5 for $1.00

Resistor, 3.0K ohms +/- 5 percent, 3 1/4 watts; IRC wirewd.Type 4435 axial leads. Buy 3 for $1.00

Resistor, 3.3K ohms +/- 5 percent, 3 watts; Clarostat wirewd. Type VC3D axial leads. Buy 3 for $1.00

 

Resistor, 4.0K ohms +/- 5 percent, 3 watts; RCL wirewd.Type R1307 axial leads. Buy 6 for $1.00

 

Resistor, 8.2K ohms +/- 5 percent, 3 watts; Clarostat wirewd. Type VC3D axial leads. Buy 3 for $1.00

Resistor, 10K ohms +/- 5 percent, 3 watts; Clarostat wirewd. Type VC3D axial leads. Buy 3 for $1.00

 

 

High-power resistors (5 watts and over) with wire leads and lugs:

 

Resistor, 3 ohms +/- 10 percent, adjustable, 100 watts; Ohmite wirewd. Type D100K3R0 lugs. $4.00 ea.

 

Resistor, 10 ohms +/- 5 percent, 10 watts; Dale wirewd.Type CW-10 axial leads. Buy 5 for $1.00

 

Resistor, 10 ohms +/- 10 percent, adjustable, 100 watts; Ohmite wirewd. Type D100K10R0 lugs. $4.00 ea.

 

Resistor, 10 ohms +/- 10 percent, 25 watts; Clarostat wirewd. Type VP258 lugs. $2.00 ea.

Resistor, 50 ohms +/- 10 percent, 8 watts; Clarostat wirewd. Type VPR5F radial leads. $1.00 ea.

Resistor, 270 ohms +/- 5 percent, 5 watts; Corning metal film flameproof type FP5, leads. Buy 5 for $1.00

 

Resistor, 619 ohms +/- 1 percent, fixed, 5 watts; Memcore wirewd., lugs, Western Electric type KS8512 Buy 3 for $1.00.

 

Resistor, 1K +/-5 percent, 25 watt, radial lugs; Memcor  0.75 inch dia., 2 inches long. Manufactured for Western Electric, these truly ugly resistors look used even though they're new and unused. Buy 4 for $1.00

 

Resistor, 2.5K +/- 5 percent, 50 watts; Clarostat wirewd. Type VP50K, lugs. $2.00 each.

Resistor, 3.0K +/- 5 percent, 25 watts; Ohmite wirewd. Type 270, lugs. $2.00 each.

Resistor, 3.48K +/- 1 percent, fixed, 10 watts; Memcore wirewd., lugs, Western Electric type KS8512 Buy 3 for $1.00.

 

Resistor, 7.5K +/- 5 percent, 5 watts; Clarostat wirewd. Type VC5E axial leads. Buy 2 for $1.00

 

Resistor, 8.0K +/- 1 percent, 5 watts; Dale wirewd. Type RS-5-5W, axial leads SPECIAL: Buy 8 for $1.00

 

Resistor, 22K ohms +/- 5 pct, 2W, SEI RS2W style, axial leads, taped/reeled, 15 pcs.for $1.00

Resistor, 25K +/- 5 percent, 5 watts; Clarostat wirewd. Type VC5E axial leads. Buy 2 for $1.00

 

Resistor, 30K +/- 5 percent, fixed, 50 watts; Clarostat wirewd. Type VP50K, lugs. $2.00 each.

 

Resistor, 35K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

 

Resistor, 40K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

 

Resistor, 50K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

 

Resistor, 60K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

 

Resistor, 75K +/- 5 percent, fixed, 50 watts; Clarostat wirewd. Type VP50K, lugs. $2.00 each.

Resistor, 75K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

Resistor, 80K +/- 5 percent, adjustable, 50 watts; Clarostat wirewd. Type VP50KA, lugs. $2.00 each.

Resistor, 100K +/- 5 percent, fixed, 50 watts; Clarostat wirewd. Type VP50K, lugs. $2.00 each

Resistor, 225K +/- 5 percent, fixed, 50 watts; Clarostat wirewd. Type VP50K, lugs. $2.00 each.

 

Surface-mount resistors— grouped in order of decreasing footprint (and hence wattage):

 

Resistor, 0.012 ohm +/- 1 pct, 2512 footprint, taped/reeled, 10 pcs.for $1.00

 

Resistor, 100K ohms +/- 5 pct, 2010 footprint, taped/reeled, 50 pcs.for $1.00

 

Resistor, 1.91K ohms +/- 1 pct, 1210 footprint, taped/reeled, 50 pcs.for $1.00

 

Resistor, 0.033 ohm +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor,   22 ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 64.9 ohms +/-1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor,   68 ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 90.9 ohms +/-1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 100 ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 110 ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 125 ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 240 ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 470 ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 619 ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

 

Resistor, 2.49K ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 4.7K ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 10K ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 12.1K ohms +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

 

Resistor, 340K ohms +/- 1 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 1 Megohm +/- 5 pct, 1206 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 100 Megohms +/- 10 pct, 1206 footprint, taped/reeled, 10 pcs.for $1.00

 

 

Resistor, 25.5 ohms +/-1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor  33 ohms +/- 5 pct, 0805 footprint, taped/reeled,    50 pcs.for $1.00

Resistor, 49.9 ohms +/-1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 274 ohms +/-1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 402 ohms +/-1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 1K ohms +/-5 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 2K ohms +/-5 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 3.32K ohms +/-1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 4.7K ohms +/-5 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

Resistor, 1 Meg ohm +/- 1 pct, 0805 footprint, taped/reeled, 50 pcs.for $1.00

 

Resistor, 51 ohms +/-5 pct, 0603 footprint, taped/reeled, 50 pcs.for $1.00

 

Potentiometers and power rheostats:

 

Pot., 16 ohms +/- 10 pct., 100W, linear wirewound (2.50 amps. maximum), threaded bushing, metal shaft is 0.5 in. long by 0.25 in. dia. Hardware included. Body is  3 in dia. by 1.5 in deep. Solder lug terminals. Ohmite Model K, p/n RKS16R. Suitable for heater-voltage adjustment

Or power-supply test load. In original cartons. Only 3 available for $6.00 each

 

Pot., 100 ohms +/- 10 pct., 100W, linear wirewound (1.0 amps. maximum), threaded bushing, metal shaft is 0.5 in. long by 0.25 in. dia. Hardware included. Body is 3 in dia. by 1.5 in deep. Solder lug terminals. Memcor type R-100. Suitable for heater-voltage adjustment

or power-supply test load. In original carton. Only 1 available for $6.00

 

Pot., 1K ohms +/- 10 pct., 0.25W, linear taper, threaded bushing, plastic shaft is 0.125 in. long by 0.125 in. dia. Hardware included..Body is  0.625 in dia. by 0.875 in deep. Solder lug terminals. Includes SPST normally-open low-current switch that closes when pot is rotated fully CLOCKWISE, as in an oscilloscope’s variable gain control with “calibrated” position fully clockwise. SPECIAL: buy 3 for $1.00

 

Pot., 500K ohms +/- 10 pct., 0.5W, linear taper, threaded bushing, shaft is 0.375 in. long by 0.125 in. dia. Hardware included. Allen-Bradley p/n WRA1GG040F504U. 0.5 in dia. by 0.375 in deep. Solder lug terminals. SPECIAL: buy 3 for $1.00

 

Recent Arrivals and Special Offers:

 

High-voltage wire: Brim Electronics p/n CHV22-6.5, AWG#22 (19 strands of AWG#34)

insulated with Teflon ™ tape overwrap, plus special anticorona treatment of conductor.

Rated for 32.5 KV DC max., 10 KV AC max. Outer diameter is 0.141 in. Limited qty.

available at $.75 per foot cut to the length you specify.

 

Pomona Multiway Binding Posts  p/n 3750-2 Attractively gold plated and individually, factory packaged. Available in red only. Buy 4 pieces for $3.00 and paint two black<g>. Qt’y. limited.

 

Bipolar transistors:

BSR17A NPN surface-mt. transistor, 100 mA, 40 V., 100<hfe<300. Buy 25 pieces for $1.00

BCW70T PNP surface-mt. transistor, -200mA, -50V, Ft>150 MHz, 215<hfe<500. Buy 10 for $1.00

MPS-6523 PNP sm-sig TO-92 trnstr., 25V, 500mA 300<hfe<600, buy 10 for $1.00

MMBT3906LT1 PNP surface.mt. gen-purpose PNP trnstr., -60 V hfe 150. Buy 10 for $1.00

 

MOSFET Transistors:

BSS138 N-ch enhancement-mode MOSFET, surface-mt., 60V, logic-level gate. Buy 6 for $1.00

RFL1N08L N-ch pwr. MOSFET, TO-39 (TO-5) pkg., 1A, 80V, logic-level in. Buy 3 for $1.00

VN0206N N-ch. Pwr. MOSFET, 2A, 60V, TO-39 pkg but xrefs to IRF513, buy 3 for $1.00

Note: free heat sinks are included with these MOSFETs.

VN2222LL N-ch DMOSFET, TO-92 pkg., 60V, much like VN10KM. Buy 8 for $1.00

 

 

Voltage-reference ICs:

LM4040CIM3X +2.5V, 0.5% 100 PPM voltage reference. Surface-mt., $1.00 each.

TK11250BUCB +5V, 30mA, low-dropout voltage reg. W/on-off control. Surface-mt., 5 pcs. for $1.00

 

Linear ICs:

MAX1232 Microprocessor monitor/watchdawg timer, debouncer. Surface-mt. pkg. $1.00 each

LMC7101A0 CMOS rail-to-rail low-pwr. op amp in “Tiny” SOT-23 pkg. Nat. Semi. Buy 3 for $2.00

FX469LG 1200/2400/4800-baud FFSKMSK modem for two-way radio apps. Quad flatpack. $3.00 each

 

Diodes:

PMBD7000 two series-conn. hi-spd. Si. diodes, surface-mt. 40mA, 100V. Buy 20 for $1.00

BAV74 two comm.-cathode hi-spd. Si. diodes, surface-mt. 40mA, 50V. Buy 20 for $1.00

 

Capacitors:

Trimmer capacitor: Philips p/n 2222-809-05217, 2-18pF, PC-mt. vert., PTFE diel. 4 for $1.00

Surface-mount capacitor: 0805, 0.033 uF +/- 10%, 50 V. X7R, AVX  p/n. 10 for $1.00

Surface-mount capacitor: 0805, 33 pF +/- 5%, 50 V. NP0, AVX  p/n. 10 for $1.00

Surface-mount tantalum capacitor: B2 case, 10 uF +/- 10%, 16 V. Buy 4 for $1.00

 

Inductors:

Inductor, surface-mt., J. W. Miller PM43-100M, 10 uHy at 2.52MHz, 1A, SRF 35 MHz, 6 for $1.00

Inductor, axial-lead, 18 uHy, 0.5W resistor size. Buy 50 for $1.00

Inductor, axial-lead, 22 uHy, 0.5W resistor size. **Temporarily Unavailable**

 

 

Cap Kit 1  Axial-leaded film-dielectric capacitors orig. m’fd. for AT&T; values of these randomly-assorted caps are mostly 1.0 uF and 2.0 uF, of 10 percent tolerance and rated for 100 VDC but mixed with a few one-percent values. Lead lengths are 0.625 in. (formed for PC-board insertion) or longer. Cross-sectional shapes are either flattened oval or round. Sold by weight: you get a one-pound package of approximately 250 pieces for $6.00.

 

Cap Kit 2  GOOD NEWS! Radial-leaded silver-mica capacitors. BAD NEWS! Not exactly assorted. AGNEWS! The predominant values available in this batch are 499 pF and 20.5 pF,

+/- 1 percent tolerance. Most feature full-length (1.5-inch) leads. Sold by weight: you get 4

ounces, or over 100 pieces for $3.00. Buy a Glutton For Punishment Pack: one pound for $10.00!

 

Resistor Rat’s Nest Kit 1: Buy a one-pound package that contains randomly assorted, mixed resistors and includes precision metal-film, wirewound, thick film, and even a few carbon comp resistors. Most have full-length leads and some are formed for PC-board insertion. The resistors are entangled and await sorting—hence the “rats’ nest”. (No actual rats were involved in, or injured in, the preparation of these assortments). Buy a one-pound package for $3.00 plus postage.

***

Double-double balanced-mixer surface-mount modules, 80 MHz-2.5 GHz. MA/COM

House numbered EHNS-1, an earlier version of the ESMD-50CM and MAMXES0117: “…low-cost, medium-drive, double-double balanced mixer [two matched Schottky-diode quads inside]… +8 to +14 dBm input for 1 dBm compression….” Specs for the ESMD-50CM and MAMXES0117  are available, but NOT the non-ROHS equivalent (the EHNS-1). Priced at $1.50 each or 4 pieces for $5.00.

 

Crystal oscillator, 10 MHz, w/frequency adjustment; through-hole PC-bd. mounting (four pins

plus two shield-can tabs); Toyocom p/n TCO-919R. Some specs available. Buy 1 for $2.00, 6 for $10.00

 

More components follow:

 

************************

SEMICONDUCTORS

************************

DIODES:  These devices only-- 100 pieces for $1.00 while supplies last

 

1N914 general-purpose silicon diodes, taped/reeled (but falling off tapes).

1N4934 Fast-recovery silicon rectifier, 100 V, 1 A, taped/reeled

1N5235B 6.8-volt Zener diodes, taped/reeled (but falling off tapes); leads sl. tarnished.

1N5237B 8.2-volt Zener diodes, bagged; leads slightly tarnished.

BAS16  surface-mount silicon diodes, 75 V. small-signal (sim. to 1N4148)

 

BAW56  (Diodes Inc.) surface-mount pkg. common-anode dual fast-sw. si. diode, , taped.

BAV10  Fast-switching, low-capacitance general-use silicon diodes, 60 V, 2.5 pF  Axial leads

 

Red LED in T1 pkg.  Not "super bright" but good for indicators. One inch leads. While they last, you get 100 pieces per order. ALMOST GONE!

 

DIODES These devices-- 20 pieces for $1.00

 

1N4006 800V, 1A PIV rectifier diodes; bulk packed

1N4007 Motorola 1KV, 1A PIV rectifier diodes (also used as PIN RF-switching diodes). Taped and reeled.

1N5060  400V, 2.5 A rectifier diodes; leads are formed and trimmed for PC board insertion (0.4 inch centers.)

1N5245B  15 V +/- 5 percent, 500 milliwatt Zener diode; individually bagged. While they last!

4935  Full specs unknown, but these appear to be 1N4935 equivalents (200V, 1A fast-recovery Si diode).

RG3B  100V, 3A fast-recovery rectifiers; full-length leads; taped and reeled

 

************************************************************************************

DIODES  These devices-- 10 pieces for $1.00

 

JAN1N748A  Individually foil bagged mil-spec Zener diodes. Limited quantity.

1N5817 Schottky rectifiers, full-length leads, taped and reeled.

1N5821 Schottky rectifiers, full-length leads, bulk packed

 

1N5059  Controlled-avalanche Si. rectifier diodes, 200 V. PIV, 2 A max. leaded, bulk packed

1N5711 Schottky diodes, full-length leads, 10 for $1.00

 

BAT83 low-capacitance, fast-switching Schottky, axial leads, taped and reeled, 60V PIV, 30 mA If max.

 

5082-2800 H-P  60-volt PIV Schottky diodes (AKA 1N6263), full-length leads, taped and reeled.

MZG41-140D Motorola house-numbered 140 V. Zener diode; 1 W pkg.

HLMP1340 Hewlett-Packard red light-emitting diode. Clear lens, T-1 pkg.

LED, yellow right-angle through-hole printed-circuit board mount (T3 1/4 lens). No specs. available.

550-3607-801 Dialight through-hole yellow/green LED; three-lead connection allows simultaneous access to both diodes

 

**********************************************************************************

SURFACE-MOUNT DIODES: These devices-- 10 pieces for $1.00

 

BAS-40-04 dual Schottky diode; 40 V, 120 mA max. 5 pf; series connected (voltage doubler) surface-mount reeled.

BAV-99LT1  high-speed dual silicon diode, series connected (voltage doubler) surface-mount reeled.

BAT17  UHF Mixer Schottky diode, surface-mount reeled.

BAT54A  Dual Schottky diode, common-anode connection, surface-mount. 30 V, 200 mA max.

MBR540T1 Motorola Schottky rectifiers, taped-and reeled, surface-mount package.

MMBD7000 dual si. signal diodes, half-bridge conf., 100 V 200 mA, SMD, taped. Use 2 for full bridge.

597-7721-107  Dialight SMT yellow and green light-emitting diodes in one tiny pkg.! As cute as a bug's ear and a suitable source of illumination for same.

 

************************************************************************************

DIODES With wire leads or mounting studs: These devices-- 6 pieces for $1.00

 

ITT 566 House-numbered germanium diodes, Vf = 0.25 V, Vrev= 25 V. max., Rec time 50 nsec.

JTX4959 (1N4959)  11V +/- 5 percent, 5W Zener diode

1N1186  200V, 35A stud-mount diodes (no mounting hardware included)

50SQ10 Int'l. Rectifier 5 A at 100 V Schottky diode, leaded pkg. Bulk packed.

SRS160H2 Sensitron ultrafast (Trr< 70 NS), 600V, 0.75A rectifiers; leaded pkg., bulk packed.

 

MSD-6100  Dual switching diode, common-cathode connection. TO-92 pkg. PIV 100V, 4 ns, 0.6V at 1 mA. Bulk packed.

Unitrode 28 V., 5 W. Zeners  Indiv.. packed and serialized, house numbered. Full-length leads.

Western Electric  stud mount Zener diodes, 15 V +/- 10 %; DO-203 stud base connects to anode. No specs, no mtg. Hardware, but inexpensive.

************************************************************************************

SURFACE-MOUNT DIODES: These devices-- 6 pieces for $1.00

 

HSMS-2805 HP Unconnected pair of matched Schottky diodes (70V Vbr.); surface-mount reeled.

HSMS-2815 HP Unconnected pair of matched Schottky diodes (20V Vbr.); surface-mount reeled.

HSMS-2823 HP Common-anode pair of matched Schottky (20V Vbr.); surface-mount reeled.

BAR-43 surface-mount Schottky diode, surface-mount reeled.

 

************************************************************************************

DIODES--  These devices-- 3 pieces for $1.00

***********

1N5452  Variable-capacitance diodes, full-length leads, taped and reeled. Nominal cap. of 47 pf and Q of 250 at 50MHz and 4 VDC.

MV1644  Variable-capacitance diodes, full-length leads, bulk packed. Nominal cap. of 56 pf and Q of 150 at 50MHz and 4 VDC

MV2102  Variable-capacitance diodes, TO-92 pkg., bulk packed. Nominal cap. of 8.2 pf and Q of 450 at 50MHz and 4 VDC TEMPORARILY SOLD OUT

 

************************************************************************************

DIODES-- individually priced

**********

Small-signal PIN diodes, no specs available; full-length axial-leads; indiv. serialized in sealed-foil envelopes. $1.00 each, 8 for $5.00

BA244  UHF switching diode, no specs available, $1.00 each, 8 for $5.00

BA479G  PIN diode, $1.00 each, 8 for $5.00

BA482  VHF Switching diode, $1.00 each, 8 for $5.00

BA483  VHF Switching diode, $1.00 each, 8 for $5.00

 

CR022 220 microampere constant-current FET "diode" $2.00 each

PAD-1  Siliconix ultra-low leakage FET diode 1 pA at -20 V.; $2.00 each

FA2309E  Fairchild diode quad molded into an epoxy block; $2.00 each

 

MR1215SL  Moby Diode:  a high-current silicon rectifier rated for 300 V and 100 Amperes. Apps include windmill generator isolation and truly high-current DC heater supplies. Motorola didn't include mounting hardware (10-32 UNF 2A) with these. Buy one for $5.00 or the carton of 10 for $40.00.

KPBC3506W   General Inst. bridge rectifier ass'y; 600V at 35A. Wire leads. $1.00 each.

 

1SV99  Attenuator diode (Toshiba), no specs available, $1.00 each, 8 for $5.00

 

******************************************************************************************************

TRANSISTORS-- Specials $1.00 for 20 pieces; $5.00 for 120 pieces; $35.00 per 1000 pieces

******************************************************************************************************

TN-2219A National Semiconductor NPN general-purpose NPN transistor 100 < hFE < 300 at Ic= 150 mA; BVcbo = 75 V min.; BVceo = 40 V min.; Icbo = 10 nA max. at Vcb= 60 V; Cob = 8 pf max.; Ft = 60 MHz min. at Ic = 20 mA. NF 4 dB (max.) TO-237 metal-tabbed plastic package (similar to TO-92) package reduces thermal resistance from 125 C per watt for a TO-92 to 50 C per watt for the TO-237.

***

SCA14957 Small geometry (for RF?) PNP silicon trnstr. in four-lead (TO-72) pkg. BVceo approx. 60 V.; Hfe approx. 150. No specs available, alas.

***

66AK  Western Electric NPN silicon transistor; hFE approx 300-400; epoxy pkg. is similar to stubby TO-92. No additional specs available.

***

98Y   Western Electric N-channel JFET transistor; Gm approx. 8000 micromhos; epoxy pkg.  Partial specs now available: (Vgs (off) approx 2.8 V.; Idss approx 12 mA; BVdg  approx. 30 VDC;  gm approx. 8700 micromhos (uS). (many thanks to Brad Hernlem, KG6IOE, for his research!)

***

ZTX-300 Zetex NPN small-sig., Ft 150 MHz min., hFE 50-300, Vceo 25V min., Icmax= 500 mA, Pd= 300 mW, E-line epoxy pkg. similar to TO-92 w/same leads spacing.

 

 

*********************************************************

TRANSISTORS-- These devices-- 8 pieces for $1.00

*********************************************************

 

BD139 TO-123 NPN power transistor, 80V at 1 A 

BD433 TO-126 NPN power transistor, 22V at 4 A   / The BD433 and BD434 are complementary devices;

BD434 TO-126 PNP power transistor, 22V at 4 A  / buy 4 of each type (8 total ) for $1.00

 

J108  N-channel JFET for audio and RF switching. TO-92. Rds(on) <= 8 ohms. Taped and reeled

J201  N-channel JFET for audio and RF switching; TO-92 ; bulk packed

MPSW-51  Motorola PNP "Tall" TO-92 pkg. rated for 1.5W dissipation. Bulk packaged.

MPS-A42 (Signetics) NPN small-sig., HV bipolar trnstr. Ft = 50 MHz, hfe => 40. Vc = 300V,

Pc= 0.625W, Ic= 0.5A max TO-92

 

 

*********************************************************

TRANSISTORS-- These devices-- 8 pieces for $1.00

*********************************************************

 

MPSW06, Motorola, but marked w/ Hewlett-Packard p/n 1854-1146  (80 V., NPN gen-purp. ampl in 1-W "tall" TO-92 pkg.

MRF-918  Motorola NPN  RF, plastic-TO-92 pkg. 2N918. Bulk packaged

TNT00104N3 Supertex N-channel enhancement-mode DMOS FET in TO-92 (leaded) package. 40 V, 2 A max.

ZTX956 Zetex PNP, 200V 2A TO-92 pkg.

2SC2878 NPN audio switching transistors used in thump-suppression apps. Bulk packaged.

2N5962 NPN low-noise high-gain amplifier TO-92. Bulk packaged.

2N6111 NPN Si. garden-variety TO-220 pwr. trnstr., 40 V, 40 W., 7 A Ic. Bulk packaged.

 

 

***********************************************************************************

SURFACE-MOUNT TRANSISTORS-- These devices-- 8 pieces for $1.00

************************************************************************************

 

BCP69  PNP SMT transistor, 20V, 1A fT= 60 MHz. Hfe =  285 (nominal). Reeled.

BSS84  P-channel MOSFET SMT transistor, 50V, 130 mA. Rds (on) 10 ohms.. Reeled

MMBR5179L surface-mount small-signal RF bipolar NPN transistor.Specs cross to 2N5179. Taped and reeled.

MMFT2955ET1 P-channel MOSFET SMT power transistor, 60V, 1.2 A. Reeled

NDS331N N-channel DMOS FET, surface mount; 20 V. at 1.3A, low Rds (on); SMT pkg., reeled.

TP0610-T1 P-channel FET, surface mount; 60V at 0.12A, reeled.

 

*************************************************************************************

TRANSISTORS-- AS  PRICED:

 

BU2527AX  (Philips) High voltage NPN trnstr. Vceo = 800 V., Ic max = 12 A. Pdiss = 45 W Electrically-insulated collector tab in SOT399 package. $.50 each

 

DTC114ESA (Rohm) Fast NPN trnstr. w/built-in series and shunt input resistors (10 K each)-- an “open-collector inverter” in SC-72 pkg. (small TO-92 w/leads on 0.1-in. ctrs. Buy 5 for $1.00

 

MRF532 (Motorola)  exotic and hard-to-find PNP high-voltage complement to MRF 531. 2.5 W

TO-39 (similar to TO-5) pkg. Ft of 500 MHz min. 800 MHz typ. and useable for video

amplifiers or other RF apps. $1.00 each, six for $5.00

JTX2N4854 mil-spec'ed. PNP/NPN dual transistor. $2.00 each, 6/$10.00

 

2N3866 NPN RF trnstr.,  TO-5 pkg. $1.00 each, 3/$2.00

 

2N3955 Dual matched JFETs; six-lead TO-18 pkg. $1.00 each, 6/$5.00

2N4867 Audio N-ch. JFET TO-18 case $.50 each, 5 for $2.00

2N4954  PNP RF transistor, Ft > 1.2 GHz, three-lead TO-18 $.50 each, 5 for $2.00

 

2N4959  NPN RF transistor, Ft approx. 1.5 GHz, three-lead TO-18 $.50 each, 5 for $2.00

2N5564  Dual N-ch. JFET, six-lead TO-18 case, $1.00 each, 6/$5.00

 

2SC3202 NPN High voltage trnstr., 200 V., 50 mA, 0.8 W, 5/$1.00

2SC3206 NPN High voltage trnstr., 200 V., 50 mA, 0.8 W, 5/$1.00

2SC3207 NPN High voltage trnstr., 300 V., 100 mA, 0.9 W, 5/$1.00

2SC4632 NPN High voltage trnstr., 1200 V., 10 mA, 2.0 W, elec.-insulated TO-220 pkg. 3/$1.00

 

TRANSISTORS-- AS  PRICED:

 

 

2SC4633 NPN High voltage trnstr., 1200 V., 30 mA, 2.0 W, elec.-insulated TO-220 pkg. 3/$1.00

2SK2134 N-ch. Power MOSFET, 200 V. 11 A max. Crosses to nte2374 and ecg2374; buy 3/$1.00

SD3406 Motorola house-numbered NPN/NPN dual transistor; six-lead TO-5 pkg. $1.00 each

NTE-232 PNP Darlington trnstr; Indiv. packaged in NTE boxes.  $1.00 each (qty. limited), 6/$5.00

MTP3N100E N-ch. 3A 1000 V power MOSFET in TO-220 pkg. $1.00 each, 6/$5.00

 

SD-201 Signetics DC-2 GHz DMOS single-gate N-channel FETs four-lead TO-72 can (like TO-18 w/shield lead). A conductive-rubber antistatic "O" ring encircles all four leads. Specs (available on request and with purchase) include S parameter plots. $1.00 each, $3.00 for 6, $5.00 for 12 pieces or $20.00 for 100 pieces.

***

2N6423 PNP power transistor, 200V at 3A, hard-to-find TO-66 pkg. $2.00 each

BCP69  PNP 1.5W surface-mount power trnstr. Buy 4 pieces for $1.00, 30/$5.00

**************************************************************************************

INTEGRATED CIRCUITS; MMICs-- Mix or match at $.50 each, $15.00 for 35 pieces, 100 pieces for $35.00

**************************************************************************************

MRFIC0916  "Solid-state 12AT7" transistor cascode MMIC by Motorola; 100-2500 MHz. SMT package

***

MSA-0786 Hewlett-Packard MMIC broadband and stable RF amplifiers featuring DC-2 GHz freq. response. These are taped and reeled and feature leads configured for surface-mounted applications. Specs are available at HP's web site (or with your order).  or at... http://literature.agilent.com/litweb/pdf/5968-4716E.pdf

***

MSA-1105  Hewlett-Packard  MMIC broadband and stable RF amplifiers featuring near-DC-1.3 GHz freq. response. These are taped and reeled and feature leads configured for surface-mounted applications. Specs are available at HP's web site (or with your order).  or at... http://literature.agilent.com/litweb/pdf/5965-9557E.pdf

***

uPC1675G  NEC MMIC broadband RF amplifier, 1.9 GHz BW, 12 dB gain, 5.5 dB NF, Zin, Zout

matched for 50 ohms. Specs included. SOT-143 pkg.

 

 

SXT-289 Sirenza 1.8 GHz-2.5 GHz GaAs HBT MMIC soldered onto an assembled 3-inch by 3-inch circuit board-- See listing in "CRYSTALS, OSCILLATORS, MISCELLANEOUS ASSEMBLIES" below.

************************************************************************

INTEGRATED CIRCUITS AND OPTO DEVICES-- AS PRICED

************************************************************************

PS2702-2 NEC Dual optoisolator in surface-mounted package. Taped and reeled. $1.00 for 4 pieces

ILQ2 optoisolators, Siemens/Litronix DIP-packaged, $1.00 for 4 pieces  ***LIMITED SUPPLY***

MC78L05ACP Positive 5-volt TO-92 voltage regulators. Buy 6 for $1.00

PC511 high-voltage (5 KV) optoisolator made by Sharp; in plastic "domino" PC-mount pkg. 4 for $1.00

TL431-C adjustable shunt regulator in TO-92 pkg. $1.00 for 6 pieces

***

 

 

INTEGRATED CIRCUITS AND OPTO DEVICES-- AS PRICED

 

LH0033G Fast unity-gain buffer IC features response of DC-100 MHz and outputs of +/-10 volts into 50 ohms. In shallow 12-lead TO-8 style case. National Semiconductor's app notes show a similar device (LH0063) used as a 1-watt CW final amplifier. Hard to find, and a true bargain at $2.00 apiece.

***

LM350T and LM337T adjustable positive (LM350) and negative (LM337) TO-220 voltage regulators soldered to tiny printed-circuit boards which attach to a six-lead, six-inch wiring harness terminating in a six-pin Molex (tm) jack. Get one assembly (one of each regulator and the harness) for $.50

***

V23806-A3-C3  Siemens/Infineon LCF-FDDI optical data-link transceiver modules. Bulk pkg.

or tubed. Only 24 pieces avail. at $1.00 each.

***

CLC220AI  ComLinear/National Semiconductor high-speed amplifier TO-8 pkg. $2.00 each

AD843JN   Analog Devices fast-settling op amp (34 MHz bandwidth); 8-pin DIP pkg.  $2.00 each

MC12061P  Motorola clock oscillator. Hard to find! Plastic DIP pkg. $2.50 each

MC12071P  Motorola divide by 64/divide by 256 VHF/UHF prescaler. Hard to find! Plastic DIP pkg. $3.50 each

 

 

LM136H voltage regulator (TO-46 pkg.). Bulk packaged. $1.00 each.

MC14099  8-bit CMOS latch in plastic DIP pkg. Buy 4 for $1.00

4302-3 Burr-Brown multifunction analog math module (epoxy DIP pkg.). $6.00 each (qty. limited)

XC62FP3302MR  +12 V. in, +3.3 V. out (+/- 2%) low-drop out voltage regulator. SMT pkg., Torex Semi. 4 for $1.00

DS1833   Dallas Semi. microprocessor reset ckt., 5-volt power supply, TO-92 through-hole mtg. Buy 4 for $1.00

 

*******************************************

RF and INDUCTIVE COMPONENTS

*******************************************

***

T1-1T  Minicircuits (1:1 turns ratio (center-tapped)) broadband RF transformers (80 KHz to 200 MHz); leads are formed for surface mounting but you can rebend for DIP insertion. Visit www.minicircuits.com for full specs via their catalog.    TEMP. OUT OF STOCK $2.00 for 3 pieces

*****

S554-3184-00 Bel Fuse broadband RF xfmr., 1:1 impedance ratio; Lpri-= 40 uHy, Lleakage = 80 nHy max., Cw-w = 10 pF max. Bandwidth (-3 dB) is 200 KHz to 340 MHz typical. Min. wdg-wdg breakdown  of 1500 volts. Surface-mt. package. $2.00 for 3 pieces

*****

1-191 E&E Magnetics broadband xfmr., DS3/E3 svc., 1:2 CT, Lpri = 40 uHy, Surface-mount package. $2.00 for 3 pieces

***

PSCQ-2-400 Minicircuits  90-degree, 2-way power divider, 0.9 dB insertion loss, 225-400 MHz; $1.00 each

*****

Fair-Rite cores (all are type 43 mix); specs are available at Fair-Rite's web site or upon inquiry

2843002402 (binocular (balun) core)  $1.00 for 20 pieces

2743001112 (bead on wire leads)   $1.00 for 20 pieces

2743013211 (large bead on wire lead-- 0.375 in. dia. by 0.5 in. long)  $1.00 for 5 pieces

2943666631 (multiaperature 3-turn bead on wire lead; impedance is  550 ohms above 60 MHz. $1.00 for 6 pieces

**************************************************************************

COILCRAFT INDUCTORS--  $1.00 for  5 pieces; $5.00 for 35 pieces, or $5.00 for 9 each of four Coilcraft types listed.

 

142-07J08  Single-winding adjustable inductors. 330 nH min./ 378 nH nom. /427 nH max.; Q is 112 min. at 40 MHz; 7.5 turn winding on 10 mm molded form.

146-09J08  Single-winding adjustable inductors. 330 nH min./ 405 nH nom. /480 nH max.;

Q is 66 min. at 40 MHz; 9.5 turn winding on 7 mm molded form. SRF (no core) = 320 MHz;

150-05J08  Single-winding (unshielded) adjustable inductor. Green 7-mm. body, 5.5 turns. Inductance is 0.137 uh min./0.165 uh nom./0.193 uh max.; 0.116 uh no core. Q min. = 114 at 50 MHz.; SRF (no core) = 650 MHz.

SLOT TEN-2-01   Coilcraft single-winding adjustable inductors. 0.8 uH min./ 1.2 uH nom. / 1.7 nH max.; Min. Q of 47 at 7.9 MHz. Brown color-coded body. 

 

***************************************

Surface-mount InductorS  $1.00 for 8 pieces of these surface-mount inductors of one value or any mixture of values.

Extra Special! $18.50 postpaid (U.S. only) for an experimenter's kit of 8 pieces of each of the 19 Coilcraft inductors listed below!

***************************************

Coilcraft 1008CS and 1812CS families-- Chip (SMT) Inductors approx. 100 by 80 mils and 180 by 120 mils (tnx to Mike, WA8MCQ for crx.) respectively, ceramic construction. Full specs are available at...    www.coilcraft.com

Typical specs for 68 nH Q(min)=65 @ 350 MHz, self-resonant frequency of 1300 MHz minimum,

Rdc = 0.2 ohms max., 1 ampere DC max.)

 

0603CS-27NXJBC  27 nH +/- 10 percent

1008CS-120TJBC  12 nH +/- 5 percent

1008CS-270XMBC  27 nH +/- 20 percent

1008CS-470XMBC  47 nH +/- 20 percent

1008CS-560XGBC  56 nH  +/- 2 percent

 

1008CS-680XKBC  68 nH +/- 10 percent

1008CS-680TKBC  68 nH +/- 10 percent

 

1008CS-221XJBC  220 nH  +/- 5 percent

1008CS-561XGBC  560 nH  +/- 2 percent

1008CS-751XGBC  750 nH  +/- 2 percent

1008CS-751TKBC  750 nH +/- 10 percent

1008CS-821XJBC  820 nH  +/- 5 percent

 

1008CS-102XJBC  1000 nH +/- 5 percent

1008CS-152XJBC  1500 nH +/- 5 percent

1008CS-332XKBC  3300 nH +/- 10 percent

1008CS-682XKBC  6800 nH +/- 10 percent

 

1812CS-122XKBC  1.2 uH +/- 10 percent

1812CS-392XKBC  3.9 uH +/- 10 percent

1812CS-472XKBC  4.7 uH +/- 10 percent

****************

CT1008HS-040GG Central Technology  Chip (surface-mount) inductor-- 4.7 nHy +/- 2 percent

****************

NL453232T-2R7J TDK  2.7 uHy

***************

PE-1008CD040JTT   4.7 nHy +/- 5 percent

 

* * * * *

Murata 22 uHy +/- 10%, 250 mA surface-mount ind., 1210 footprint. P/N LOH32CN220K21L. Taped and reeled.

 

HF70ACB453215-T  TDK surface-mount ferrite choke, 120 ohms +/- 25 percent at 100 MHz

************************

RF filter inductor at approx 10 microhenries, these consist of a ferrite bead choke molded into an unmarked 0.2" x 0.3" x 0.3" radial-leaded epoxy package. No other specs available, other than a government contract price of $9.00 each! <g>. $1.00 for 10 pieces.

***

Prewound ferrite balun (binocular) core measuring approx. 0.6 cm long by 0.7 cm wide by 0.4 cm high. Straight-through wires traverse the two holes. A two-turn winding (call these "red" and "green") goes through each hole. One end of each winding connects to the straight-through wires, and the red and green free wires are connected together. These may be 6 dB VHF or UHF directional couplers, but we're guessing. Individually packed in small envelopes. $1.00 for 10 pieces.

***

PE-53190 toroidal inductor  by Pulse Engineering for switched-mode power supplies. Inductance = 12.2 microhenries at zero DC; 8.7 microhenries at 2.5 A DC. Surface-mount tape and reel package. Price:  $1.00 for 6

 

MS21367-09 (Delevan 100-181M)  "Micro i" (tm) ribbon-lead, mil-spec inductors rated at 180 nHy +/- 20 percent at a minimum Q of 40 at 25 MHz. Series resonant freq. is 250 MHz minimum. Measuring 0.1 by 0.1 inches, these inductors have 0.2-inch radial leads. Buy five pieces for $1.00 or a box of 30 for $5.00

 

15 microhenry (+/- 20 percent), 3A RMS surface-mount bobbin inductor for switched-mode power supplies. Similar to J. W. Miller PM3315-150M or Coilcraft DO3316-153P. Tape and reel packages.  Price $1.00 for 6

***

470 nHy nominal shielded inductor with adjustable core, 6 turns on winding. Shielding can measures approx 7mm by 7mm by 12mm high. $1.00 for 6 pieces.

***

0819-26J Delevan RF choke, p/n 1.2 microhenries, axial-leads. $1.00 for 20 pieces.

***

375-7330-P01 IF transformer(?) in shielded cans. Secondary inductance = 350 microhenries. 455 KHz?? More info on request. Price to be determined.

***

16936 Shielded inductor, 7mm can, 16 microhenries nominal, 6.5 turns. $1.00 for 3 pieces.

***

CA 558 7107 10 00 00  Shielded inductor, Cambion p/n; 560 nHy nominal adjustable +/- 10 percent. Q = 70 at 560 nHy. DC resistance = 0.093 ohms; 1.65 DC A max. Self-resonant frequency is 200 MHz nominal. Carbonyl SF (blue) tuning slug  Shielding can measures approx 10mm by 10mm by 12mm high. $1.00 for 3 pieces.

***

**************************************************************************

CRYSTALS, OSCILLATORS, MISCELLANEOUS ASSEMBLIES

**************************************************************************

 

Mystery RF/Microwave Board Type 1 contains two female PC-mount SMB connectors and one Sirenza SXT-289 GaAs MMIC amplifier (1.8-2.5 GHz, 15 dB gain, 23 dB output) and bias stabilization circuitry assembled on PC board. Two proprietary ICs have been brutally removed, rendering these boards nonfunctional but intact. Sold as-is with no guarantee of functionality but may be usable as a standalone amplifier or component source (Adam Moss, G0ORY, describes his approach-- write me for more info.  $1.00 each, or 12 for $10.00 (Specify Type 1 when you order))

 

*********************

Mystery RF/Microwave Board Type 2 contains two male PC-mount SMB connectors and an Anaren Xinger 1A1305 hybrid coupler (1.5-2.2 GHz, 3 dB, 90-degree). Sold as-is with no guarantee of functionality but as a source of salvageable components requiring skilled desoldering. $1.00 each, or 12 for $10.00 ((Specify Type 2  when you order)

*******************

SAW-stabilized oscillators; intended for ECL circuits, but also reportedly usable as LOs. All are packaged in metal DIP cans. NOS are $3.00 each, or 5 assorted (or same value) for $10.00 Frequencies available are

222.222 MHz  (RF Monolithics HC1279; proprietary p/n marking)

350.000 MHZ  (RF Monolithics HC1301)

366.667 MHz 

400.000 MHz  ($.50 ea. but ***NOT NOS***; removed from PC boards)

733.333 MHz 

 

******************************

Crystals and Oscillators. Note that frequencies in the 1 to 10 MHz range are ideal for ladder-filter experimentation. Price $1.00 each, 6 for $5.00, 12 for $8.00-- mix or match. Frequency format = xxxyyyzzz.aa (KHz);  c = quartz crystal, r = piezoceramic resonator

 

Frequency    Type  Notes

_________    ____  ____________________________________________

 

          81.920  c      Tall HC/6 package

        103.991  c       Western Electric tubular metal pkg.

      1843.200  c       160-Meter band

      2304.000  c 

2457.600    c

      3579.545  c       80-meter band; PSK31 applications

      3686.400  c       Western Elec. short HC/18 0.5-in. leads (some SMT)

      4000.000  c 

      5185.000  c 

      5529.000  c

      5529.600  c 

      6000.000  c   M'fd. for Western Electric

      6553.600  c 

      6650.000  c

      7372.800  c

      7680.000  c   (short HC/49 can)

     11000.000  r   (piezo resonator element)

     12800.000  c  (short HC/49 can; 20 pf load capacitance) Use in SW converters for BC-band radios

     12902.400  c 

     13330.000  c   

     14318.180  c  

     14745.600  c 

     16257.000  c   (multiply x9 to 146.313 MHz; formed leads)

     18000.000  c

     19145.000  c   Valpey VF45 (HC/18, long leads)

     20000.000  c 

     20466.900  c  HC/18 solder-sealed case, code P-18

 

     20480.000  c  (w/grounding lead att. to can)

     20654.400  c  HC/18 solder-sealed case, code P-20

     20748.100  c  HC/18 solder-sealed case, code P-21

     21029.400  c  HC/18 solder-sealed case, code P-24 (15 m CW)

     21123.200  c  HC/18 solder-sealed case, code P-25 (15 m CW)

     21219.900  c  HC/18 solder-sealed case, code P-26 (15 m phone)

     21404.400  c  HC/18 solder-sealed case, code P-28 (15 m phone)

     21591.900  c  HC/18 solder-sealed case, code P-30

     21685.700  c  HC/18 solder-sealed case, code P-31

     21732.700  c  HC/18 solder-sealed case, code P-16

     24576.000  c  

     33333.000  c  

     36864.000  c    (w/grounding lead att. to can)

    100000.000  c

 

************************

FILTERS (SIGNAL)

************************

455 KHz 15-Pole Ceramic Filters, Murata part no. CFS-455E. Specs include. -3 B Bandwidth of +/- 5.5 KHz min.; -6 dB Bandwidth +/- 8 KHz min.; -90 dB Bandwidth +/- 15 KHz max. Passband ripple is 3 dB max. Insertion loss is 6 dB max. Out-of-band attenuation at 455 KHz +/-100 KHz is 70 dB min. Spurious attenuation (0.1- 1.0 MHz) is 50 dB min. (see plot in specs) Input and output impedance is 1500 ohms Price: buy one to 9 filters for $5.00 each, or buy a factory-sealed box of 10 pieces for $30.00

*****************************************

SAW (surface acoustic wave) filters, Sawtek part no. 851921 (see their web site for specs.)

140 MHz center frequency,10 MHz bandwidth. These list for over $100 each-- I have a few

available for $10.00 each, or $20.00 for 3 pieces.

*****************************************

AUDIO LOW-PASS ACTIVE FILTERS:

 

AFL 89WB 12000 C5  Murata hybrid SIP pkg. low-pass sharp-cutoff active audio filter 0 dB passband gain, -3db @ 12 KHz  Only $2.00 each.

***

AFL 89WB 20000 C5  Murata hybrid SIP pkg. low-pass sharp-cutoff active filter audio 0 dB passband gain, -3db @ 20 KHz  Only $2.00 each.

 

*******************************************************************************************************

CONNECTORS; TURRET TERMINALS; BREADBOARDS; SWITCHES, CAPACITORS, RESISTORS, ETC.

*******************************************************************************************************

SMB Coaxial connectors: see... Mystery RF/Microwave Board listed above

***********

Turret terminals $.20 each, $10.00 for a 100-piece assortment. E-mail for a jpg image of available styles

***********

Altoids tin-compatible barrier terminal block, Kulka p/n 411 GP 12. Twelve single-screw poles with 0.125-inch solder tabs. UL and CSA recognized and rated for 300 VAC and 5 Amperes. Measuring only three inches long, these barrier strips fit comfortably atop an Altoids tin and attach via double-sided sticky tape, adhesive, or by replacing two screws with longer screws (that penetrate the Altoid tin's lid and make connections to the tin) and adding lockwashers and nuts. Need fewer terminals? You can drill out one or more poles and carefully separate sections with fewer poles. See next page for crimp lugs that fit these terminals.

 

These blocks are NOS and molded in shiny black phenolic. SPECIAL-- buy 'em at $.75 each or $2.00 per three. See below for crimp lugs that fit these terminals

.

 

Fork-lug wire-crimp terminals that fit 2-56 screws and terminals in Kulka 411 GP 12 blocks listed above. These feature a yellow insulated shank, indicating a wire gauge range of AWG #26 to AWG #22; Buy in strips of 12 pieces for $1.00 while they last.

***

Ring-lug wire-crimp terminals. These fit 2-56 screws but NOT the terminals in Kulka 411 GP 12 blocks listed above. Yellow insulated shank accepts wire gauges from AWG #26 to AWG #22; Buy in strips of 12 pieces for $1.00

***

Barrier terminal block, Kulka p/n 671 GP 08. Eight poles (screw-terminal pairs),

with a closed back for surface mounting on metal chassis or panels. UL and CSA

recognized; rated for 300 VAC and 20-30 Amperes. NOS in shiny black at  $1.00 each.

 

**********************

HARDWARE, SPECIAL CONNECTORS, AND CAPACITORS

**********************

Tinnerman (tm) U-Type fasteners (AKA "Speed Nuts") p/n C11351-632-3B. Start with

a 0.125-inch panel and drill a clearance hole for a screw. Fit one of these Tinnermans

over the panel's edge, and you get a replaceable 6-32 threaded fastener that's

not easily stripped-- a far cry from using self-tapping screws! Ideal for securing chassis bottom plates or front panels, these fasteners are available at 20 pieces for $1.00, or $4.00 per hundred.

*********

Augat 8080-1G48 Socket for TO-3 power transistor. Or use two sockets to hold one HC-6 crystal. Molded plastic construction, with through-chassis insulators built in for pins and screws. Pin connectors feature a very aggressive grip. One of the nicest sockets of its kind I've ever seen!  Buy 6 for $1.00

*********

Feedthrough capacitors Spectrum Control 100 pf nominal (threaded bushing mount, hardware included). Attenuation is specified as -10 dB at 300 MHz, and -20 dB at 1 GHz. $.50 each, $1.00 for 3 pieces.  ***ONLY 10 PIECES REMAINING***

************

4.7 uF +/- 10%, 63V. DF = 1.0% max @1 KHz, 1.6% @ 10 KHz. Radial leads, epoxy dipped M’fd. By Towa Electric (towa-el.co.jp) Specs avail. Buy 3 pcs. for $1.00

***

0.0047 uf, +/- 5 %, 400 V. Polyester/foil radial-leaded capacitors; Mepco-Electra p/n 711DAA472PJ401AX (whew...)     Special-- Buy 25 pieces for $1.00

****************************

0.01uf, +/- 1 %, 50 V. Ceramic SMT capacitors (1812 pkg.) by Vitramon. C0G (NP0) temperature-stable, taped and reeled. Buy 25 for $1.00

****************************

3300 pF, +/- 20 %, 250  VAC AC-line bypass rated (X1, Y1)  ceramic capacitor. Half-inch leads. Buy 6 for $1.00

***********

680 pF, +/- 20 %, 250  VAC AC-line bypass rated (X1, Y1)  ceramic capacitor by Vishay Sprague Cera-Mite p/n 440LT68. Two-inch leads.  Buy 6 for $1.00

 

***********

JFD Glass Piston Capacitor, Differential configuration  JFD's VC794A provides 0.1 to 2.5 pf capacitance change between two stators and a common rotor. As capacitance between the rotor and one stator decreases, capacitance between the rotor and remaining stator increases. You might use one of these jewels as a phasing control in a crystal filter or VHF equalizing network. Nominal capacitance is apparently 0.1 pf to 2.5 pf, but we're still looking for specs. Scarce as hens' teeth, and priced at a modest $3.00 each.

*********

CONNECTORS; TURRET TERMINALS; BREADBOARDS; SWITCHES, CAPACITORS, RESISTORS, ETC.-- Continued

**********

HIGH-VOLTAGE ceramic bypass caps 0.033 uf, +80/-20 % tolerance, X7R dielectric, 3KVDC. Radial-leaded pkg., 0.5 inches square, 0.125 inches thick, 1.5-inch leads. 1998 date code. $.25 each, or buy 25 pieces for $6.00

*******************

Caddock MS281N NONINDUCTIVE resistors

10 ohm +/- 5 per cent tolerance, 8 watt noninductive power film resistors

Tinned axial leads (0.75 inches long) formed for PC-board insertion on 1.2-inch centers.

These are NOS, bulk-packed parts. Note these measure well within tolerance at +/- 0.2 ohms

typical. Full specs are available at www.caddock.com     but highlights are

--Temperature coefficient of resistance 50 ppm;

--Power rating 8 watts at 25 C, derating to 4 watts at 150 C and 0 watts at 275 C;

--Noninductive design serpentine film layout cancels magnetic field, presenting the

equivalent inductance of a straight piece of wire of the resistor's body plus lead length.

Applications include current sampling, cathode biasing, and dummy loading for audio and RF applications.

Price $1.00 each ($10.00 for 12 pieces); only 10 pieces remain.

**********************

 

Caddock T912 Precision resistor network

An unconnected pair of precision resistors occupy a ceramic SIP network; resistance

values are 10K and 90K +/- 0.05 percent ratio tolerance; temperature tracking is 10 PPM per degree C. Applications include voltage-reference dividers, operational amplifier gain setting, and attenuator circuits. Specs are available. Price $1.00 each (quantity limited)

 

 

Quality Thermistor part no. QT0805V-105K negative-temperature coefficient (NTC) 8 by 5 mil surface-mount thermistor, 1 megohm nominal resistance. Taped and reeled. TEMP. UNAVAILABLE

****************************

WM103C negative-temperature coefficient (NTC), radial-lead thermistors, 10K nominal.

TEMP. UNAVAILABLE

 

 

 

Exotic Wire: Buy six-foot lengths of the following exotic wire for $2.00 each length. Use Litz wire to rewind damaged RF coils, and multifilar wire to assemble baluns, transmission-line transformers, and small power inductors. Here's what's currently available:

 

(Number of conductors, conductor gauge, construction, color code)

 

Trifilar and multifilar wire

 

 3 cond. AWG #32, twisted (6-8 twists/inch), red/green/amber

 4 cond. AWG #33, twisted (6-8 twists/inch), red/green/white/blue

13 cond. AWG #25, twisted (7 twists/foot), one green/12 red

 

Litz and other wire:

 

1 cond. AWG #36 nyleeze/single nylon fabric wrap

Litz, 24 strands AWG #44, single polythermaleeze/single nylon fabric wrap

Litz, 25 strands AWG #38, single polythermaleeze/single nylon fabric wrap

 

***

Belden Conformable (tm) 50-Ohm Coaxial Cable  p/n 1671A  This semi-rigid

cable features an outer diameter of 0.084 inches, 100 percent copper-tin composite

shield coverage, Teflon (tm) center dielectric, and a AWG #24 silver-plated,

copper-covered steel center conductor. Rated for 105 C ambient, AWM style 10245

and similar to RG-405 (M17/133D).

 

Available in short custom-cut lengths up to 10 feet or longer at $.30 per foot,

or as a factory-packaged 1000-foot spool for $100.00 plus postage for 12 pounds.

As with all Teflon (tm)-insulated wire and cable, a "1000-foot" spool may contain

multiple lengths totaling 1000 feet. First purchaser of a full spool gets to choose

spools for number and length contents.

 

Applications include shielded grid-lead wire in tube equipment or as gimmick caps at 29.5 pF per foot, winding exotic inductors and making single-turn loop antennas

 

Notes

-----

To get an idea how much wire you'll need to rewind a coil, measure the coil's

diameter and multiply by 3.14 to get the length of a turn. Then, multiply

by the number of turns to get the total length (allow a few inches extra for

making external connections).

 

If you need longer lengths of wire or more information, please contact me.

 

*****************************************************************************

Omega Eng'g. Shielded twisted-pair thermocouple wire  P/N TT-J-20-TWSH,

Teflon (tm) PFA, iron/Constantan (type J) pair w/foil overshield. Ideal for monitoring

something hot (up to 480 C) from a safe distance.  $.50 per foot.

******

In response to popular demand... buy ten (10) feet of any one of the following wire

and sleeving items for $1.00  ***Skeptics may send a SASE for short-length samples

of any sleeving or wire.***

*****

Bentley-Harris Expando PT woven sleeving 1/8 inch unexpanded O.D., black

in color. Expands to cover up to a 1/4 inch wire bundle. UL (tm), CSA(tm) recognized.

*****

Teflon (tm) tubing, AWG #20, standard wall thickness.

*****

Spiral-cut Teflon tubing, 1/8 inch O.D. Covers wire bundles up to 1/2 inch in diameter.

*****

Silicone-coated fiberglass tubing, AWG #16 only. Exterior color is a slightly glossy

reddish-brown. Rated for 600VAC and 200 Celsius. Manufacturer's type is "Flexicone 200"

class C.

*****

Wire: AWG #20 silver-plated 19 x 32 strands covered with PTFE insulation, which is in turn

covered by glass braid. Manufactured to M22759/1 mil. specs and rated for 600V and 200 C.

Only white insulation is available-- use a permanent marker to add your preferred hues.

This wire comes close to matching vintage fabric-covered wire but doesn't turn to mush

when soldered.

 

*******

Relays

*******

P40P47A12P  NOS Potter & Brumfield four-pole, single-throw normally-open contactors.

These relays are rated for 120 VAC coil power and feature contacts rated for 50 amperes

resistive at 600 VAC, or 40 amperes inductive (motor) loads. For motors, the contacts

are rated are 5 HP at 120 V three-phase, or 15 HP at 440/600 VAC. P&B expects a

200,000-operation contact life at full-rated load; contacts are field-replaceable using

P&B kit 9P40X2 (not included). Coil inrush power is 92 VA; 12 VA activated (contacts

closed). Everyone nearby knows when one of these puppies activates-- it’s loud! Specs. Available.

Buy these NOS relays for $4.00 each plus postage for two pounds per relay. Only 4 left!

***

Nais DS4E-SL2 DC 1.5V  latching relay features gold-clad silver, four-pole, double-throw contacts rated at 0.6 amperes at 125 VAC or 110 VDC, or 2.0 amperes at 30 VDC, or 60 watts at 125 VAC. Open-contact breakdown voltage is 1000 VAC. Rated for millions and millions of operations.

 

Two coils provide latching action at 1.5 volts DC per 200-milliwatt coil-- more specs are available on request. Packaged in an extended DIP eye-catching yellow plastic printed-circuit mount package, these relays carry UL/CSA recognition.

 

Applications include coil bandswitching with memory; remote-receive antenna configuration,

and (but persistent) memory. Need more info? A bewilderingly thorough

data sheet is available. Buy these for $2.50 each.

****

Aromat TN2E-3V, ATN20198 [74 pcs. avail.] These have a 3-volt coil-- specs available. $1.00 each

**********************************

Miscellanea (Workshop items)

**********************************

 

Texwipe TX709A  Foam-tipped low residue, single-ended cleaning swabs w/polypropylene handles originally intended for clean-room use. Thrifty hams will use a swab, cut off the foam, and whittle a trimmer-capacitor adjustment tool from the handle. TEMPORARILY OUT OF STOCK

 

Incandescent Lamp (Oddball)   Manufactured by Herzog Miniature Lamp Works, inc.,  and branded 'Sol-Rex" back when electrons were individually hand-polished, these lamps are rated for 120 volts at 4 watts and feature a T 4-1/2 clear envelope and a candelabra base. Overall length from envelope to base tip is appxoximately 1.5 inches and diameter is 0.5 inches. Apps include vacuum-tube Wein-bridge oscillators and, yes, illumination. Only $.50 each or 3 for $1.00

 

PC laminate: single-sided 1-ounce copper on 0.012-inch epoxy-fiberglass. Dimensions are

10.5 inches long by 5 inches wide. You can cut this laminate for shields and enclosures

by using light-duty metal shears or good-quality scissors. Also, you can use a handheld

0.25-inch paper punch to knock out lots of circular pads for "Manhattan"-style construction.

Buy a panel for $1.00 plus postage (shipped between sheets of cardboard in a well-taped

manila envelope). ***Almost gone—inquire for availability.***

 

Heat dissipator: Thermalloy 2225 press-fits onto a TO-5 case and doesn't require a special

tool for installation  Thermal resistance sink to ambient (natural convection); 46 degrees C per

watt. Imagine Abe Lincoln's stovepipe hat with two brims turned upside down and you'll get a

general idea of the shape. Color: anodized black. Buy 20 pieces for $1.00, or a lifetime-supply

bag of 500 for $15.00 (anyone kitting up a new project using TO-5 transistors or voltage regulators?) plus postage.

.

 

***************************

*   Shipping per order  *                                        List Version of  August 8August 22,  2008

***************************

Please contact me to reserve, or for availability of, components of your choice and for shipment cost.

 

***********

Payment

***********

Please make your check or money order payable to Brad Thompson. I honor PayPal-- contact me for details.

 

73, Brad  AA1IP

 

Brad Thompson

P.O. Box 307, 202 Whitaker Rd.

Meriden, NH 03770-0307

voice (603) 469-3351

fax (603) 469-3917

e-mail brad.thompson@valley.net

 

 

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