ss8050.pdf datasheet:

SS8050 SS8050 NPN Transistors General description SOT-23 Plastic-Encapsulate Transistors FEATURES Complementary to SS8550 Power Dissipation of 300mW High Stability and High Reliability MECHANICAL DATA SOT-23 Small Outline Plastic Package Epoxy UL: 94V-0 Mounting Position: Any Marking: Y1 Maximum Ratings & Thermal Characteristics TA = 25C unless otherwise noted Parameters Symbol Value Unit Collector-Base Voltage VCBO 40 V Collector-Emitter Voltage VCEO 25 V Emitter -Base Voltage VEBO 5 V Collector Current-Continuous IC 1500 mA Collector Power Dissipation PC 300 mW Junction Temperature Tj 150 Storage Temperature Tstg -55-+150 Thermal resistance From junction to ambient RJA 417 /W Electrical Characteristics TA = 25C unless otherwise noted Limits Parameter Symbols Test Condition Unit Min