BUY 2SD2391 https://www.utsource.net/itm/p/4045190.html
Medium Power Transistor ( 60V, 2A)
Description: 2SD2391 is a silicon NPN epitaxial planar type transistor designed for use in low frequency power amplifier applications. Features: * High breakdown voltage * Low collector-emitter saturation voltage * High gain Applications: * Audio amplifiers * Low frequency power amplifiers * General purpose switching (For reference only)