View s8550 datasheet:

S8550S8550 TRANSISTOR (PNP)FEATURES SOT-23 Complimentary to S8050 Collector current: IC=0.5A 1BASE 2EMITTER 3COLLECTOR MARKING : 2TY MAXIMUM RATINGS (TA=25 unless otherwise noted) Symbol Parameter Value UnitsVCBO Collector-Base Voltage -40 VVCEO Collector-Emitter Voltage -25 VVEBO Emitter-Base Voltage -5 VIC Collector Current -Continuous -0.5 APC Collector Power Dissipation 0.3 W Tj Junction Temperature 150 Tstg Storage Temperature -55-150ELECTRICAL CHARACTERISTICS (Tamb=25 unless otherwise specified) Parameter Symbol Test conditions MIN MAX UNITCollector-base breakdown voltage V(BR)CBO IC = -100A, IE=0 -40 VCollector-emitter breakdown voltage V(BR)CEO IC =-1mA, IB=0 -25 VEmitter-base breakdown voltage V(BR)EBO IE= -100A, IC=0 -5 VCollector cut-off current ICBO VCB= -40V, IE=0 -0.1 ACollector cut-off curr

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