View tip142-147t datasheet:

TIP142T TIP147T ® COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS STM PREFERRED SALESTYPES COMPLEMENTARY PNP - NPN DEVICES MONOLITHIC DARLINGTON CONFIGURATION LOW VOLTAGE HIGH CURRENT HIGH GAIN APPLICATIONS 3 2 GENERAL PURPOSE SWITCHING 1 DESCRIPTION TO-220 The TIP142T is a silicon epitaxial-base NPN power transistor in monolithic Darlington configuration, mounted in TO-220 plastic package. They are intented for use in power linear and switching applications. The complementary PNP type is TIP147T. INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit NPN TIP142T PNP TIP147T VCBO Collector-Base Voltage (IE = 0) 100 V V Collector-Emitter Voltage (I = 0) 100 V CEO B VEBO Emitter-Base Voltage (IC = 0) 5 V I Collector Cur