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JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD TO-92 Plastic-Encapsulate Transistors TO 92 BC556/BC557/BC558 TRANSISTOR (PNP) FEATURES High Voltage1. COLLECTOR Complement to BC546,BC547,BC548 2. BASE 3. EMITTER MAXIMUM RATINGS (Ta=25 unless otherwise noted) Symbol Parameter Value UnitBC556 -80VCBO Collector-Base Voltage BC557 -50 V BC558 -30BC556 -65VCEO Collector-Emitter Voltage BC557 -45 V BC558 -30VEBO Emitter-Base Voltage -5 V IC Collector Current-Continuous -0.1 A PC Collector Power Dissipation 625 mW RJA Thermal Resistance from Junction to Ambient 200 /W Tj Junction Temperature 150 Storage Temperature Tstg -55~+150 A,May,2012 B,Feb,2013ELECTRICAL CHARACTERISTICS (Ta=25 unless otherwise specified) Parameter Symbol Test conditions Min Typ Max Unit BC556 -80Collector-base BC557 V(BR)CBO