View 2sd1623 datasheet:

Ordering number : ENN1727D 2SB1123 / 2SD1623 PNP / NPN Epitaxial Planar Silicon Transistors 2SB1123 / 2SD1623 High-Current Switching Applications Applications Package Dimensions • Voltage regulators, relay drivers, lamp drivers, unit : mm electrical equipment. 2038A [2SB1123 / 2SD1623] Features 4.5 1.5 • Adoption of FBET, MBIT processes. 1.6 • Low collector-to-emitter saturation voltage. • Large current capacity and wide ASO. • Fast switching speed. • The ultraminiature package facilitates 0.4 0.5 higher-density mounting, thus allows the applied 3 2 1 0.4 1.5 hybrid IC’s further miniaturization. 3.0 1 : Base 0.75 2 : Collector Specifications 3 : Emitter ( ) : 2SB1123 SANYO : PCP Absolute Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit