View 2sa1731 datasheet:

Ordering number:EN3135A PNP Epitaxial Planar Silicon Transistor 2SA1731 High-Speed Switching Applications Features Package Dimensions · Adoption of FBET, MBIT processes. unit:mm · Large current capacity. 2045B · Low collector-to-emitter saturation voltage. [2SA1731] · Fast switching speed. 1 : Base 2 : Collector 3 : Emitter 4 : Collector SANYO : TP unit:mm 2044B [2SA1731] 1 : Base 2 : Collector 3 : Emitter 4 : Collector SANYO : TP-FA Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material