View 2sa1258 datasheet:

Ordering number:ENN1058D PNP/NPN Epitaxial Planar Silicon Darlington Transistors 2SA1258/2SC3144 60V/3A for High-Speed Drivers Applications Features Package Dimensions · High fT. unit:mm · High switching speed. 2010C · Wide ASO. [2SA1258/2SC3144] 10.2 4.5 3.6 5.1 1.3 1.2 0.8 0.4 1 : Base 1 2 3 2 : Collector ( ) : 2SA1258 3 : Emitter 2.55 2.55 SANYO : TO-220AB Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO (–)70 V Collector-to-Emitter Voltage VCEO (–)60 V Emitter-to-Base Voltage VEBO (–)5 V Collector Current IC (–)3 A Collector Current (Pulse) ICP (–)5 A 1.75 W Collector Dissipation PC Tc=25?C 20 W ?C Junction Temperature Tj 125 Storage Temperature Tstg –55 to +125 ?C Ele