View 2sd2100 datasheet:

Ordering number:EN3176A PNP/NPN Epitaxial Planar Silicon Transistors 2SB1397/2SD2100 Compact Motor Driver Applications Features Package Dimensions � Low saturation voltage. unit:mm � Contains diode between collector and emitter. 2038 � Contains bias resistance between base and emitter. [2SB1397/2SD2100] � Large current capacity. � Small-sized package making it easy to provide high- density, small-sized hybrid ICs. E : Emitter C : Collector B : Base ( ) : 2SB1397 SANYO : PCP (Bottom view) Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO (�)25 V Collector-to-Emitter Voltage VCEO (�)20 V Emitter-to-Base Voltage VEBO (�)6 V Collector Current IC (�)2 A Collector Current (Pulse) ICP (�)4 A