View tip122 datasheet:

TIP120/121/122 TIP125/126/127 COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS n SGS-THOMSON PREFERRED SALESTYPES DESCRIPTION The TIP120, TIP121 and TIP122 are silicon epitaxial-base NPN power transistors in monolithic Darlington configuration Jedec TO-220 plastic package, intented for use in power linear and switching applications. The complementary PNP types are TIP125, 3 2 TIP126 and TIP127. 1 TO-220 INTERNAL SCHEMATIC DIAGRAM R Typ. = 5 K? R Typ. = 150 ? 1 2 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit NPN TIP120 TIP121 TIP122 PNP TIP125 TIP126 TIP127 V Collector-Base Voltage (I = 0) 60 80 100 V CBO E VCEO Collector-Emitter Voltage (IB = 0) 60 80 100 V VEBO Emitter-Base Voltage (IC = 0) 5 V I Collector Current 5 A C I Collector Peak Current 8 A