BUY PZT5551L https://www.utsource.net/itm/p/4972886.html

Description: PZT5551L is a NPN silicon epitaxial planar transistor manufactured by UTC. Features: - High DC current gain - Low collector-emitter saturation voltage - High switching speed - Low noise Applications: - Audio amplifiers - Switching applications - High speed switching circuits - Motor control circuits - General purpose switching and amplification (For reference only)