View tip120 sam datasheet:

NPN EPITAXIAL TIP120/121/122 DARLINGTON TRANSISTOR MEDIUM POWER LINEAR TO-220 SWITCHING APPLICATIONS • Complementary to TIP125/126/127 ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Rating Unit Collector-Base Voltage VCBO 60 V : TIP120 80 V : TIP121 100 V : TIP122 Collector-Emitter Voltage VCEO : TIP120 60 V : TIP121 80 V : TIP122 VEBO 100 V 1.Base 2.Collector 3.Emitter Emitter-Base Voltage IC 5 V Collector Current (DC) IC 5 A Collector Current (Pulse) IB 8 A Base Current (DC) PC 120 mA Collector Dissipation ( TA=5 ) PC 2 W Collector Dissipation ( TC=5 ) TJ 65 W Junction Temperature TSTG 150 Storage Temperature -65 ~ 150 ELECTRICAL CHARACTERISTICS (Tc =25 ) Characteristic Symbol Test Conditions Min Max Unit Collector Emitter Sustaining Volt