View 2sc4555 datasheet:

Ordering number:EN3187 PNP/NPN Epitaxial Planar Silicon Transistor 2SA1745/2SC4555 Low-Frequency General-Purpose Amplifier Applications Features Package Dimensions · Very small-sized package permitting the 2SA1745/ unit:mm 2SC4555-applied set to be made small and slim. 2059 · Low collector-to-emitter saturation voltage. [2SA1745/2SC4555] B : Base C : Collector E : Emitter ( ) : 2SA1745 SANYO : MCP Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO (–)20 V Collector-to-Emitter Voltage VCEO (–)15 V Emitter-to-Base Voltage VEBO (–)5 V Collector Current IC (–)500 mA Collector Current (Pulse) ICP (–)1 A Collector Dissipation PC 150 mW ?C Junction Temperature Tj 150 Storage Temperature Tstg –5