ST BC635 / BC637 / BC639 NPN Silicon Epitaxial Planar Transistor Medium Power Transistors for driver stages of audio / video amplifiers 1.Emitter 2.Collector 3.Base TO-92 Plastic Package Weight approx. 0.19g Absolute Maximum Ratings (Ta = 25 OC) Parameter Collector Base Voltage Collector Emitter Voltage Symbol BC635 BC637 BC639 BC635 BC637 BC639 Emitter Base Voltage VCBO VCEO Value Unit 45 60 100 45 60 80 V V VEBO 5 V Collector Current IC 1 A Peak Collector Current ICM 1.5 A Base Current IB 100 mA Peak Base Current IBM 200 mA Power Dissipation Ptot 830 mW Junction Temperature Tj 150 O Storage Temperature Range TS - 55 to + 150 O C C SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 15/03/2007 ST BC635 / BC637 / BC639 Characteristics at Ta = 25 OC Parameter DC Current Gain at VCE = 2 V, IC = 5 mA at VCE = 2 V, IC = 150 mA at VCE = 2 V, IC = 500 mA Collector Cutoff Current at VCB = 30 V Emitter Cutoff Current at VEB = 5 V Collector Base Breakdown Voltage at IC = 100 µA Collector Emitter Breakdown Voltage at IC = 10 mA Emitter Base Breakdown Voltage at IE = 10 µA Collector Emitter Saturation Voltage at IC = 500 mA, IB = 50 mA Base Emitter Voltage at VCE = 2 V, IC = 500 mA Gain Bandwidth Product at VCE = 5 V, IC = 50 mA, f = 100 MHz Symbol Min. Max. Unit hFE hFE hFE hFE 40 40 40 25 250 160 - - ICBO - 100 nA IEBO - 100 nA BC635 BC637 BC639 V(BR)CBO 45 60 100 - V BC635 BC637 BC639 V(BR)CEO 45 60 80 - V V(BR)EBO 5 - V VCE(sat) - 0.5 V VBE - 1 V fT 100 - MHz BC635 BC637 / BC639 SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 15/03/2007 ST BC635 / BC637 / BC639 Static Characteristics DC Current Gain c (mA) 1.8m A 1.6m A 1.2m A 1.0m A 0.8m A 0.6m A 0.4m A DC Current Gain hFE Collector Current I 1.4m A I B =0.2 m A C ollector Em itter V oltage V C E (V ) Collector Current IC (mA) Base Emitter On Voltage Collector Current Ic (mA) Saturation Voltage V CE(sat), V BE(sat) (V) Base Emitter Saturation Voltage Collector Emitter Saturation Voltage Base Emitter Voltage VBE (V) C o l l e c t o r C u r r e n t IC ( m A ) Capacitance Cob (pF) Collector Output Capacitance Collector Base Voltage VCB (V) SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 15/03/2007