View s8550 datasheet:

S8550BIPOLAR TRANSISTOR (PNP)FEATURES Complementary to S8050 Excellent h LinearityFE High Collector Current Surface Mount deviceSOT-23MECHANICAL DATA Case: SOT-23 Case Material: Molded Plastic. UL flammability Classification Rating: 94V-0Weight: 0.008 grams (approximate)MAXIMUM RATINGS (T = 25C unless otherwise noted)AParameter Symbol Value UnitCollector-Base Voltage V -40 VCBOCollector-Emitter Voltage V -25 VCEOEmitter-Base Voltage V -5 VEBOCollector Current IC -500 mACollector Power DissipationPC 300 mWThermal Resistance From Junction To Ambient R 417 C/WJAJunction Temperature TJ 150 CStorage Temperature TSTG -55 ~+150 CELECTRICAL CHARACTERISTICS (T = 25C unless otherwise specified)AParameter Symbol Min Typ Max Unit ConditionsCollector-base breakdown voltage V(BR)CBO -40 V I =-100

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