View rn4902 datasheet:

RN4902 TOSHIBA Transistor Silicon PNP Epitaxial Type (PCT Process) Silicon NPN Epitaxial Type (PCT Process) RN4902 Switching, Inverter Circuit, Interface Circuit Unit: mm And Driver Circuit Applications Includeing two devices in US6 (ultra super mini type with 6 leads) With built-in bias resistors Simplify circuit design Reduce a quantity of parts and manufacturing process Equivalent Circuit and Bias Resister Values R1: 10k? R2: 10k? (Q1, Q2 Common) JEDEC ? EIAJ ? TOSHIBA 2-2J1A Q1 Maximum Ratings (Ta = 25° °C) ° ° Weight: 6.8mg Characteristic Symbol Rating Unit Collector-base voltage VCBO -50 V Collector-emitter voltage VCEO -50 V Emitter-base voltage VEBO -10 V Collector current IC -100 mA Q2 Maximum Ratings (Ta = 25° °C) ° °