BUY UN4215-（TA） https://www.utsource.net/itm/p/9478016.html

The Panasonic UN4215-TA is a NPN silicon transistor in a TO-92 package. It is designed for use in general purpose amplifier and switching applications. Features: * Collector-Emitter Voltage: 40V * Collector-Base Voltage: 40V * Emitter-Base Voltage: 5V * Collector Current: 0.1A * Power Dissipation: 500mW Applications: * General purpose amplifier * Switching applications (For reference only)