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> (25) npn power transistors, 300V,90W,8A,400KHZ,ß>70,TO3
(25) npn power transistors, 300V,90W,8A,400KHZ,ß>70,TO3
(25) NPN POWER TRANSISTORS, TO3
300 V, 90 W, 8 A, 400 KHz, AC ß=70-90 (beta), NOS TransistorsNew, unused, unpackaged, high quality, steel T0-3 package. Proprietary-marked (e.g. "R71472D") but some sample-testing and replacement use for 2N3055s in commercial equipment indicates equivalent to the all-purpose 2N3055. From my sampling tests and actual circuit experiences, these are: 90 Watt (with heatsink), 8 Amps, 308+ Volts (my transistor test gear maxes out at 309 VDC), 400 KHz, and dynamic AC beta 70 - 90 (tested using a B&K Model 161 transistor tester; DC beta or Hfe is about 43% higher than AC beta; many data sheets list DC beta to make transistor look better). 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 as well as special applications, including audio power applications well into the ultrasonic / sonar range. Make sure your inventory is well-stocked! Image is 10x. The blue mark is a mark I made on each transistor I checked and found acceptable beta and leakage. LIMITED QUANTITY LEFT.
