These little PC-mount SPDT momentary switches from Omron® are rated for up to 0.1A at either 125VAC or 30VDC. Measures 3/4" x 1/4" x 1/4" with a 1-1/4" lever. UL/CSA.

These neoprene sleeves are for laptops, tablets, gaming devices and more! Measuring approx. 13” x 9-1/2” x 3/4” (Small) or 16" x 12" x 3/4" (Large) with a zipper across the top half. We’ll pick from a selection of designs in red, blue or black, some with skateboarder-ish “No Fear” images on one side or you may even get the British Union Jack!

Amps and volts, go together like pretzels and mustard, at least in Philadelphia. Where were we? Yes, you pick from our 0-10VDC in 0.2 volt increments voltmeter or the zero-adjust ammeter (Galvanometer) that reads bipolarity up to 500mA in 20mA increments. Both are in black plastic housings, 4" x 5-1/2" x 3-3/4" with a slanted face and red & black banana jack terminals.

Great for roboticists, too. It's a mighty-mite, this little 6VDC 45 RPM motor with a right-angle gearbox. Draws 13mA, no load, and stalls at 120mA. Output is through (2) double-flattened 1/4" dia x 3/16" long shafts on opposite sides of the white plastic housing, both with 1/16" dia center holes. Measures 1-7/8" x 7/8" overall. Gear ratio is 228:1.

Here's a brand new selection of sealed lead-acid rechargeable batteries, for when you're pushing something a little bigger than a penlight. All batteries are all direct from the manufacturer with current date codes. All of them have (2) 3/16" wide quick-disconnect terminals on top. Click on battery description for a photo.

Build your own quartz antenna. These (2) 4-3/8" x 3" x 1-5/16" plastic boxes each have (2) boxes of quartz crystals inside and (2) aluminum U-brackets that are attached to a single screw terminal on one short side of the box. Back in the early 70's, they were originally made to be used in pairs as part of a 300 Ohm antenna. Not sure if they will work with today's TV's but all you need is cabling to connect them and give it a try. Made in Brazil, the antenna capital of South America, probably.

Our 4-position terminal block is rated for 300V and measures 3/4" x 5/8" x 5/8" tall with set-screw terminals and a 3.6mm ID. 300V max rating. CSA.

Rated for 10A at 250VAC, these normally closed thermal fuses will pop at 128ºC or 262ºF. The fuses themselves are 1/2" long but yours will be wired into leads of assorted lengths, because they were betooken out of coffeemakers of some sort. Never been popped, though, because then they would be useless and who'd buy 'em?

You get (3) packs of Gardner Bender black heat-shrink tubing, at least (2) different, from our selection of 3/16", 3/8" and 3/4", all 4" long. This is the best way to keep your wires tidy and packed in, and watching that tube shrink into shape is worth the project alone.

Our 17-section case of over 200 electronic components will make anybody who owns a soldering gun happy as an electric clam. You get 1/4W resistor 10-1M Ohm, trimpots 500-1M Ohm, 50V disc capacitors 2.2-680pF, 100V mylar capacitors from .001-.33uF, electrolytic 50V capacitors from 1-1000uF, LEDs in (4) colors plus a 7-segment display, inductors 10-33mH, a 5V relay, bridge rectifier, (7) different diodes, (6) different transistors, (13) different ICs, a photocell, hook-up wire, (5) different switches, a mic element, 9V snap, 8-Ohm speaker , buzzer and a set of alligator-clip leads. From Elenco®.

 Detailed specifications:

Resistors:   1/4W - (5 each) in Ohms: 10, 100, 470, 1K, 2.2K, 4.7K, 8.2K, 10K, 

       18K, 27K, 47K, 82K, 100K, 220K, 330K, 470K, 1M.

Electrolytic Capacitors:  50V Radial - (2 each) 1µF, 4.7µF, 10µF, 47µF, 100µF, 470µF, 1000µF

Mylar Capacitors:  100V Radial - (2 each)  .001µF, .0047µF, .01µF, .047µF, .1µF, .33µF

Ceramic Disc Capacitors: 500V - (2 each) 2.2pF, 4.7pF, 10pF, 1pF, 22pF, 47pF, 100pF, 220pF, 470pF, 680pF

Inductors: (1 each) 4.7µH, 10µH, 47µH, 100µH, 470µH, 1mH, 10mH, 33mH

Trimpots: Single turn - (1 each) 500 ohm, 1K ohm, 5K ohm, 50K ohm, 100K ohm, 500K ohm, 1M ohm

These panel-mount SPST rocker switches have a switch on one side and a blank face next to it. Rated for up to 10A at 125V and 6A at 250V. Measure 7/8" x 15/16" with snap clips for mounting, a 1-3/16" spacer and quick-disconnect terminals.

These liquid crystal displays are raring to go. As soon as we can get Mary Ann to stop playing with them we'll pick out (5) assorted displays for you. (She keeps zapping them with static electricity to see what pops up. Mary Ann is easily amused.) Sizes range from 1-3/16" x 2" to a few as large as 5" x 10". They're unused. Some have pin leads, some have traces right on the wafer. Either way, they're a terrific bargain.

This 3-phase brushless 12VDC motor from Nidec draws 2.5A max through the red and black leads with what we think are coil taps, and Hall effect outputs through the other (4) leads. Measures 36mm (1.4") dia x 40mm (1.6") long with a 4mm (0.16") dia x 19mm (0.75") shaft with a removable cam. Includes a spec sheet.

These 0.1uF ceramic capacitors have potted radial leads of stranded wire and are rated for up to 250V. Measuring 1-1/2" x 1/2", these are older-type capacitors and are probably more for point-to-point wiring, not PCB mounting.

Our VP for Sensing Fluid Pressure called this sensor from Kavlico “sweet.” Needs a 5VDC 20mW power source, and will likely put out 0-4VDC, contingent on pressure, from 0-5"/H2O max, we’d say. Measures 1-5/16" x 17/32" on a pair of 7/8" long 5/32" slotted mounting wings. The upper 3/16" OD barb is the low side, and the lower is (ironically) high. Has a 3-pin connector with legend on the back for power and output. Call for a data sheet.

These momentary SPST push-button switches are normally open and measure 11/16" dia x just over 3/16" thick and have a 15/32" shaft with a steel lock-washer & nut plus a pair of 1/8" solder terminals on the bottom. Rated 3A at 125VAC or 1A at 250VAC. You pick red, green or yellow.

Okay, they’re just strips of metal, but CJ says one of each and a grapefruit will get you at least a “C” at the science fair. The copper electrode is 100mm long x 18mm wide  x .8mm thick (3.94" x .7" x .041”). The zinc electrode is 4” long x 3/4” wide x .027” thick and stamped “ZN”. And both of them are awfully useful for crafters and jewelry makers, too.

This black plastic gear is 3-1/16" dia with (96) teeth at 32 pitch, 20-degree pressure angle. Center has a 9/16" ID bore with a 3/4" dia x 1/8" bushing on both sides. One side also has (3) 3/32" ID x 1/8" standoffs along with a 3/16" tooth along one edge. Source and function are unknown but you'll think of something.