View 2sa1331 datasheet:

Ordering number:EN3217 PNP/NPN Epitaxial Planar Silicon Transistors 2SA1331/2SC3361 High-Speed Switching Applications Features Package Dimensions · Fast switching speed. unit:mm · High breakdown voltage. 2018A · Small-sized package permitting the 2SA1331/ [2SA1331/2SC3361] 2SC3361-applied sets to be made small and slim. Switching Time Test Circuit C : Collector B : Base (For PNP, the polarity is reversed) E : Emitter ( ) : 2SA1331 Unit (resistance : ? , capacitance : F) Specifications SANYO : CP Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO (–)60 V Collector-to-Emitter Voltage VCEO (–)50 V Emitter-to-Base Voltage VEBO (–)5 V Collector Current IC (–)150 mA Collector Current (Pulse) ICP (–)400 mA Ba