BC177 BC178 BC179ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise stated) ParameterTest ConditionsMin.Typ.Max.Unit VCE = -20V VBE = 0 -100 nA ICES Collector-Emitter Leakage Current T µ amb = 150°C -10 A IC = -10µA BC177 -50 V V BC178 (BR)CBO Collector Base Breakdown Voltage -30 BC179 -25 IC = -2mA BC177 -45 V V I (BR)CEO Collector Emitter Breakdown Voltage E = 0 BC178 -25 BC179 -20 V V I (BR)EBO Emitter Breakdown Voltage E = -10µA IC = 0 -5 VCE = -5V BC177A 125 260 IC = -2mA BC177B 240 500 f = 1kHz BC178A 125 260 — hFE DC Current Gain BC178B 240 500 BC179A 125 260 BC179B 240 500 IB = -0.5mA IC = -10mA -0.075 -0.25 VCE(sat) Collector – Emitter Saturation Voltage V IB = -5mA IC = -100mA -0.2 IB = -0.5mA IC = -10mA -0.72 -0.8 VBE(sat) Base – Emitter Saturation Voltage V IB = -5mA IC = -100mA -0.86 V V BE(on) Base – Emitter on Voltage CE = -5V IC = -2mA -5V -0.55 -0.64 -0.75 V VCE = -5V IC = -10mA fT Transition Frequency 200 MHz f = 100MHz VCE = -5V BC177 2 10 NF Noise Figure f = 1kHz BC178 2 10 dB IC = -0.2mA BC179 1.2 4 C I cbo Collector Base Capacitance C = -0.2mA VCB = -10V 5.0 pF Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use. Semelab encourages customers to verify that datasheets are current before placing orders.Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. Document Number 5760 E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk Issue 1