View tip120-7 datasheet:

TIP120/121/122 TIP125/126/127 COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS STMicroelectronics PREFERRED SALESTYPES DESCRIPTION The TIP120, TIP121 and TIP122 are silicon Epitaxial-Base NPN power transistors in monolithic Darlington configuration mounted in Jedec TO-220 plastic package. They are intented for use in power linear and switching applications. 3 2 The complementary PNP types are TIP125, 1 TIP126 and TIP127, respectively. 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 VCBO Collector-Base Voltage (IE = 0) 60 80 100 V VCEO Collector-Emitter Voltage (IB = 0) 60 80 100 V VEBO Emitter-Base Voltage (IC = 0) 5 V I Collector Curren