View 2n3771 datasheet:

2N3771 2N3772 ® HIGH POWER NPN SILICON TRANSISTOR STMicroelectronics PREFERRED SALESTYPES DESCRIPTION The 2N3771, 2N3772 are silicon epitaxial-base NPN transistors mounted in Jedec Jedec TO-3 metal case. They are intended for linear amplifiers and inductive switching applications. 1 2 TO-3 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 2N3771 2N3772 VCEO Collector-Emitter Voltage (IE = 0) 40 60 V V Collector-Emitter Voltage (V = -1.5V) 50 80 V CEV BE V Collector-Base Voltage (I = 0) 50 100 V CBO B V Emitter-Base Voltage (I = 0) 5 7 V EBO C IC Collector Current 30 20 A ICM Collector Peak Current 30 30 A IB Base Current 7.5 5 A IBM Base Peak Current 15 15 A P 150 W tot Total Dissipation at T ? 25 oC c o Tstg Storage Temperat