ST 2SC640 NPN Silicon Epitaxial Planar Transistor for switching and AF amplifier applications. The transistor is subdivided into five groups R, O, Y, P and L, according to its DC current gain. As complementary type the PNP transistor ST 2SA733 is recommended. On special request, these transistors can be manufactured in different pin configurations. TO-92 Plastic Package Weight approx. 0.19g Absolute Maximum Ratings (Ta = 25℃) Symbol Value Unit Collector Base Voltage VCBO 40 V Collector Emitter Voltage VCEO 30 V Emitter Base Voltage VEBO 5 V Collector Current IC 100 mA Power Dissipation Ptot 150 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 : 27/05/2003 ST 2SC640 Characteristics at Tamb=25 OC Symbol Min. Typ. Max. Unit Current Gain Group R hFE 40 - 80 - O hFE 70 - 140 - Y hFE 120 - 240 - P hFE 200 - 400 - L hFE 350 - 700 - V(BR)CBO 40 - - V V(BR)CEO 30 - - V V(BR)EBO 5 - - V ICBO - - 0.1 μA IEBO - - 0.1 μA VCE(sat) - 0.15 0.3 V fT - 300 - MHz COB - 2.5 - pF NF - 4 - dB DC Current Gain at VCE=6V, IC=1mA 1) Collector Base Breakdown Voltage at IC=100μA Collector Emitter Breakdown Voltage at IC=10mA Emitter Base Breakdown Voltage at IE=10μA Collector Cutoff Current at VCB=40V Emitter Cutoff Current at VEB=3V Collector Saturation Voltage at IC=100mA, IB=10mA Gain Bandwidth Product at VCE=6V, IC=10mA Output Capacitance at VCB=6V, f=1MHz Noise Figure at VCE=6V, IE=0.5mA at f=1KHz, RS=500Ω SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 27/05/2003