View bd439-44 datasheet:

BD439/BD440 BD441/BD442 COMPLEMENTARY SILICON POWER TRANSISTORS SGS-THOMSON PREFERRED SALESTYPES COMPLEMENTARY PNP - NPN DEVICES DESCRIPTION The BD439 and BD441 are silicon epitaxial-base NPN power transistors in Jedec SOT-32 plastic package, intented for use in power linear and switching applications. The complementary PNP types are BD440, and 1 2 BD442 respectively. 3 SOT-32 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit NPN BD439 BD441 PNP BD440 BD442 VCBO Collector-Base Voltage (IE = 0) 60 80 V VCES Collector-Emitter Voltage (VBE = 0) 60 80 V VCEO Collector-Emitter Voltage (IB = 0) 60 80 V VEBO Emitter-Base Voltage (IC = 0) 5 V I Collector Current 4 A C ICM Collector Peak Current (t ? 10 ms) 7 A IB Base Current 1 A Ptot