Dubuque, IA Free Moderated Classifieds Site > OLD ADS FROM PREVIOUS YEARS
> 2008
> May
> (10) pnp power transistors, high-beta (200+), TO220,nos
(10) pnp power transistors, high-beta (200+), TO220,nos
(HIGH-BETA TO220), NOSNew, unused, unpackaged, TO220 steel tabs. Proprietary-marked (e.g. "8132") but sample-tested in commercial equipment. Looks like image but green color and different proprietary #. From my sampling tests and actual circuit experiences, these are: 40W, 5A, 85V, 520 KHz, and dynamic AC beta 200-320 (tested using a B&K Model 161 transistor tester; DC beta or Hfe is about 43% higher than AC beta). PNP transistors have just about as many uses as NPN transistors, but are especially useful for grounded load outputs, and of course used in push-pull and complementary circuits. Perfect for the hobbyist, experimenter, repair technician or business, especially if you don't like your devices easily reverse-engineered. Great for many general applications, including audio applications well into the ultrasonic / sonar range - and their very high dynamic betas often make a big difference in circuit designs. This may be the time to make sure your inventory is well-stocked!
