BUY IMZ4 https://www.utsource.net/itm/p/11279522.html
IMZ4 NPN+PNP Complex Bipolar Transistor 40V/-40V 500mA/-500mA 120~560 SOT-163/SMT6/SC-74 marking Z4 switch and digital circuit application
Manufacturer: ROHM Description: NPN Silicon Epitaxial Planar Transistor Features: * High DC Current Gain * Low Collector-Emitter Saturation Voltage * Small Package Applications: * Audio Amplifiers * General Purpose Amplifiers * Motor Control * Switching Applications (For reference only)