View 2sd2120 datasheet:

Ordering number:EN3239 NPN Epitaxial Planar Silicon Transistor 2SD2120 General Driver Applications Features Package Dimensions · Darlington connection (Contains bias resistance, unit:mm damper diode). 2064A · High DC current gain. [2SD2120] 2.5 · Less dependence of DC current gain on temperature. 1.45 6.9 1.0 0.6 0.9 0.5 1 2 3 0.45 1 : Emitter 2 : Collector 3 : Base 2.54 2.54 SANYO : NMP Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 100 V Collector-to-Emitter Voltage VCEO 80 V Emitter-to-Base Voltage VEBO 6 V Collector Current IC 2 A Collector Current (Pulse) ICP 4 A Collector Dissipation PC 1 W Junction Temperature Tj 150 ?C Storage Temperature Tstg –55 to +150 ?C Electrica