ST 2SC3731 NPN Silicon Epitaxial Planar Transistor for general purpose amplifier and high speed switching applications. The transistor is subdivided into three groups, M, L and K, according to its DC current gain. On special request, these transistors can be manufactured in different pin configurations. Features ․High frequency current gain ․High speed switching ․Small output capacitance ․Complementary to ST 2SA1458 PNP transistor TO-92 Plastic Package Weight approx. 0.19g Absolute Maximum Ratings (Ta = 25 OC) Symbol Value Unit Collector Base Voltage VCBO 60 V Collector Emitter Voltage VCEO 40 V Emitter Base Voltage VEBO 6 V Collector Current IC 200 mA Power Dissipation Ptot 250 mW Junction Temperature Tj 150 Storage Temperature Range TS -55 to+150 O C O C SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/08/2003 ST 2SC3731 Characteristics at Tamb=25 OC Symbol Min. Typ. Max. Unit Current Gain Group M hFE 75 - 150 - L hFE 100 - 200 - K hFE 150 - 300 - hFE 25 80 - - ICBO - - 0.1 μA IEBO - - 0.1 μA VCE(sat) - 0.12 0.3 V VBE(sat) - 0.8 0.95 V ton - - 70 ns tstg - 100 200 ns toff - - 250 ns fT 300 510 - MHz COB - 3 4 pF DC Current Gain* at VCE=1V, IC=10mA at VCE=1V, IC=100mA Collector Cutoff Current at VCB=30V Emitter Cutoff Current at VEB=3V Collector Saturation Voltage* at IC=50mA, IB=5mA Base Saturation Voltage* at IC=50mA, IB=5mA Turn-on Time See test circuit Storage Time See test circuit Turn-off Time See test circuit Gain Bandwidth Product at VCE=20V, -IE=10mA, f=100MHz Output Capacitance at VCB=5V, f=1MHz *Pulsed PW≦350μs, Duty Cycle≦2% SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/08/2003 ST 2SC3731 Collector current vs. collector em itter voltage 20 Collector current vs. collector em itter voltage 100 90 80 700 800 900 1mA 70 16 80 600 500 400 60 12 Ic (mA) Ic (mA) 50 40 8 30 20 4 60 300 40 200 20 I B =10 A I B =100 A 0 0 20 10 30 40 0 50 0.8 0.4 V CE (V) 2.0 Collector current vs. base emitter voltage Total power dissipation vs. ambient tem perature 100 400 VCE= 1V 300 10 I C, mA Total power dissipation, mW 1.6 1.2 V CE (V) 200 1 100 0 50 0.1 100 150 200 0.4 0 0.8 Am bient tem perature T a ( C) 1.2 VBE, V Gain bandwidth product vs. emitter current DC current gain vs. collector current 1000 1000 VCE= 1V VCE= 20V 500 100 hFE fT, MHz 200 100 50 20 10 -1 -10 -100 10 0.1 IE, mA 1 10 20 100 I C, mA SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/08/2003 ST 2SC3731 Input and output capacitance vs. reverse voltage Base and collector saturation voltage vs. collector current 30 3 f=1MHz IE=0(Cib) IC=0(Cob) IC/IB=10 10 VCE(sat), V VBE(sat), V 1 VBE(sat) Cob, pF Cib, pF Cib 0.1 Cob 1 VCE(sat) 0.1 0.01 0.1 0.1 100 10 1 VCB, V VEB , V I C, mA Turn on tim e vs. collector current Rise tim e vs. collector current 1000 1000 VCC= 30V tr - rise time , ns ton, ns VCC= 30V VBE(off)= -5V IC/IB=20 100 IC/IB=10 100 IC/IB=20 IC/IB=10 10 10 2 200 100 10 2 100 10 I C, mA 200 I C, mA Fall tim e vs. collector current Storage tim e vs. collector current 1000 1000 VCC= 30V IB1= -IB2 tf - fall time, ns VCC= 30V IB1= -IB2 ts - storage time, ns 100 10 1 IC/IB=10 to 20 100 100 IC/IB=20 IC/IB=10 10 10 2 100 10 200 2 I C, mA 100 10 200 I C, mA SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/08/2003 ST 2SC3731 SWITCHING TIME TEST CIRCUIT VCC= +3V VBB= -0.5V INPUT 275 100 td V OUT 0.1 F 11.1V 10K tr OUTPUT 10 % V IN 90% 100 PW ≦ 300ns tr<1ns Duty Cycle=2 % ton SW ITCHING ton = t d + t r VCC= +3V VBB= +11V INPUT 275 100 t stg V OUT 0.1 F 10 % V IN -20V 100 tf 10 1S955 OUTPUT 90% 1S955 PW ≦ 300ns tr < 9ns Duty Cycle=2 % t off SW ITCHING toff = t f + t stg SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/08/2003