BC857 Overview
Key Specifications
Package: SOT-23-3
Pins: 3
Max Frequency: 100 MHz
Height: 1.11 mm
Description
Collector Base Voltage Collector Emmitter Voltage (+VBE = 1V) Collector Emitter Voltage Emitter Base Voltage Collector Current (DC) Collector Current - Peak Emitter Current - Peak Base Current - Peak Total power dissipation up to Tamb = 60 oC Storge Temperature Junction Temperature SYMBOL VCBO VCEX VCEO VEBO IC ICM IEM IBM Ptot** Tstg Tj BC856 80 80 65 Rth(j-t) Rth(t-s) Rth(s-a)** **Mounted on a ceramic substrate of 8mm x 10mm x 0.7mm BC857 50 50 45 5 100 200 200 200 250 -55 to +150 150 60 280 90 BC858 30 30 30 UNITS V V V V mA mA mA mW oC oC K/W 1 of 2 BC856 BC857 BC858 DESCRIPTION Collector Cut Off Current Base Emitter On Voltage Collector Emitter Saturation Voltage Base Emitter Saturation Voltage Knee Voltage DC Current Gain SYMBOL TEST CONDITION ICBO VCB = 30V, IE = 0 VCB = 30V, IE = 0, Tj = 150oC VBE(on)* IC = 2mA, VCE = 5V IC = 10mA, VCE = 5V VCE(Sat) IC = 10mA, IB = 0.5mA IC = 100mA, IB = 5mA VBE(Sat)*** IC = 10mA, IB = 0.5mA IC = 100mA, IB = 5mA VCEK IC = 10mA, -IB = Value for which IC = 11mA at -VCE = 1V IC = 2mA, VCE = 5V BC856 hFE BC857/BC858 BC856A/BC857A/BC858A Collector Capacitance Transition Frequency Small Signal Current Gain Noise Figure CC fT | hfe | NF BC856B/BC857B/BC858B BC857C/BC858C IE = ie = 0, VCB = 10V, f = 1MHZ IC = 10mA, VCB = 5V, f = 100MHZ IC = 2mA, VCE = 5V, f= 1kHZ BC856 BC857/BC858 IC = 0.2mA, VCE = 5V RS= 2k ohm, f = 1KHZ, B= 200HZ *VBE (on) decreases by about 2mV/K with increase temperature. ***VBE (Sat) decreases by about 1.7mV/K with increase temperature.
