
Light emitting diodes. Solid state devices that provide the ubiquitous power and indicator lights on your electronic gadgetry. Unlike lamps, there are no filaments that glow. Rather, some two volts of DC power at a miniscule 10 to 20 milliamps of current get the chemistry excited, and they just plain emit. Emit is a good word, too, as they don't really cast light, but glow brightly. We have a nice assortment of 3 and 5 MM diameter sizes in red, green, orange, and yellow. The longer lead is always positive, the shorter always negative, and you always need a current limiting resistor (about 500 to 1,000 ohms for 5 to 9 volt DC sources) to keep the current in the 10-20 MA range. If that's Greek to you you're either going to blow a lot of LED's or learn to change incandescent indicator lamps ! !
![]() |
6796 LED ASSORTMENT |
If you’re a surplus groupie, if you think Jarvis sits at the right hand of St. Peter, if you can see our initials without tittering, you should be flaunting your devotion – drinking out of our white, 11 oz coffee mug and wearing our soft sweatshirts and T-shirts, all with the likeness of Jarvis (our flying mascot), our corporate name and our inspiring tag line, “Incredible Stuff, Unbelievable Prices” in black across the back and “American Science & Surplus” in small print on the left front. We have thoughtfully ordered the shirts in gray, the best color to wear when digging for surplus treasure. The T-shirts are 98% cotton, and will shrink. The sweatshirts run small, and will shrink, also. Order accordingly. Don’t just sit there – Jarvisize your wardrobe.
![]() |
22528 A.S.&S. COFFEE MUG | |
![]() |
88913 LG SWEATSHIRT | |
![]() |
90267 LG T-SHIRT | |
![]() |
88914 XL SWEATSHIRT | |
![]() |
90268 XL T-SHIRT | |
![]() |
88915 XXL SWEATSHIRT | |
![]() |
90269 XXL T-SHIRT |
Wow! Really Bright! These are the type of LEDs you see in those ultra–bright key–chain flashlights. We offer either blue or white LED. Your choice of 5mm or 8mm, 3.5- 4.5 volt, 20% viewing angle, and approx. 2500 MCD. Great for electronics, model trains, miniatures, your own flashlight design. Try out the (10) pack of 5mm white and save even more money!
![]() |
37211 WHITE 5MM LED | |
![]() |
92667 WHITE 5MM LED (10PK) | |
![]() |
93076 WHITE 8MM LED |
who's got the button? You do, which means you don't have to go the drugstore when your watch, calculator, camera, radio or nearly anything else stops. Be prepared for electronic quitters with this 30-pack of button cell batteries in the most popular sizes. Our each is (6) AG1, (6) AG3, (6) AG4, (3) AG5, (3) AG12, and (6) AG13 batteries. (Some devices may call these G1, G2, etc., or have other arcane codes for these same sizes.) Brand new!
![]() |
93241 ASST. BATTERIES |
Or find fluorescence in rocks. Light up your own disco. Play CSI, Your House. Make your teeth glow in the dark. All this and more is possible with the magic of black light. You pick: the short one is 6-3/8" long x 2" wide x 7/8" thick in a black-plastic housing with an incandescent flashlight at the top, a 6-1/2" wrist strap, and a handy 10pp stain-removal handbook. Takes (4) "AA"s, not included. The big guy is 12-1/2" long, with a plastic casing (our pick of colors) designed to be mounted with double-sided tape. Takes (8) "AA"s, not included.
![]() |
93348 12-INCH BLK LIGHT | |
![]() |
92928 STAIN DETECTOR |
Click a phrase to shop for products associated with that phrase (AKA "Tag"). More popular tags appear bigger. Learn more »