Transistors IC SMD Type PNP General Purpose Transistor BC856,BC857,BC858 SOT-23 Unit: mm +0.1 2.9-0.1 +0.1 0.4-0.1 0.4 3 Low voltage (max. 65 V). 1 0.55 Low current (max. 100 mA). +0.1 1.3-0.1 +0.1 2.4-0.1 Features 2 +0.1 0.95-0.1 +0.1 1.9-0.1 0-0.1 +0.1 0.38-0.1 +0.1 0.97-0.1 +0.05 0.1-0.01 1.Base 2.Emitter 3.collector Absolute Maximum Ratings Ta = 25 Parameter Symbol BC856 BC857 BC858 Unit Collector-base voltage VCBO -80 -50 -30 V Collector-emitter voltage VCEO -65 -45 -30 V Emitter-base voltage VEBO -5 V Collector current IC -100 mA Peak collector current ICM -200 mA Peak base current IBM -200 mA Total power dissipation * Ptot 250 mW Junction temperature Tj 150 Storage temperature Tstg -65 to +150 Operating ambient temperature Ramb -65 to +150 Thermal resistance from junction to ambient * Rth j-a 500 K/W * Transistor mounted on an FR4 printed-circuit board, standard footprint. www.kexin.com.cn 1 Transistors IC SMD Type BC856,BC857,BC858 Electrical Characteristics Ta = 25 Parameter Symbol Collector cutoff current Testconditons ICBO VCB = -30 V, IE = 0 ICBO VCB = -30 V, IE = 0 , Tj = 150 IEBO VEB = -5 V, IC = 0 Emitter cutoff current BC856 BC857 DC current gain hFE BC856A,BC857A IC = -2 mA; VCE = -5 V Min Typ Max -1 -15 nA -4 ìA -100 nA 125 475 125 800 125 250 BC856B,BC857B,BC858B 220 475 BC857C 420 800 Collector-emitter saturation voltage VCE(sat) Base-emitter saturation voltage VBE(sat) Base-emitter voltage VBE IC = -10 mA; IB = -0.5 mA -75 -300 -650 IC = -100 mA; IB = -5 mA; * -250 -700 mV IC = -100 mA; IB = -5 mA; * -850 mV IC = -2 mA; VCE = -5 V Collector capacitance CC Transition frequency fT VCE = -5 V; IC = -10 mA;f = 100 MHz NF IC = -200 µA; VCE = -5 V;RS = 2 kÙ; f = 1 kHz;B = 200 Hz * Pulse test: tp 300µs, ä -600 VCB = -10 V; IE = Ie = 0;f = 1 MHz 0.02. hFE Classification 2 TYPE BC856 BC856A BC856B Marking 3D 3A 3B TYPE BC857 BC857A BC857B BC857C Marking 3H 3E 3F 3G TYPE BC858B Marking 3K www.kexin.com.cn mV IC = -10 mA; IB = -0.5 mA -650 IC = -10 mA; VCE = -5 V Noise figure Unit mV -750 mV -820 mV 4.5 pF 100 MHz 2 10 dB