ST 2SC1907 NPN Silicon Epitaxial Planar Transistor for UHF TV Tuner and Local Oscillator. The transistor is subdivided into according to its DC current gain. one group, 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 OC) Symbol Value Unit Collector Base Voltage VCBO 30 V Collector Emitter Voltage VCEO 19 V Emitter Base Voltage VEBO 2 V Collector Current IC 50 mA Emitter Current -IE 50 mA Power Dissipation Ptot 300 mW Tj 150 O -55 to +150 O Junction Temperature Storage Temperature Range TS 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 : 07/12/2002 ST 2SC1907 Characteristics at Tamb=25 OC Symbol Min. Typ. Max. Unit hFE 40 - - - V(BR)CBO 30 - - V V(BR)CEO 19 - - V V(BR)EBO 2 - - V ICBO - - 0.5 μA VCE(sat) - 0.2 1 V fT 900 1100 - MHz COB - 1 2 pF - 10 25 ps - 8 - mW DC Current Gain at VCE=10V, IC=10mA Current Gain Group Collector Base Breakdown voltage at IC =10 μA Collector Emitter Breakdown Voltage at IC =3mA Emitter Base Breakdown Voltage at IE =10 μA Collector Cutoff Current at VCB=10V Collector Emitter Saturation Voltage at IC=20mA, IB=4mA Transition Frequency at VCE=10V, IC=10mA Collector Output Capacitance at VCB=10V, f=1MHz Base Time Constant at VCB=10V, IC=10mA f= 31.8 MHz rbb’ ‧ Cc Oscillation Output Power at VCB=10V, IC=10mA Pout f= 930 MHz SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002 ST 2SC1907 Typical Output Characteristics Maximum Collector Dissipation Curve (mA) 110 =3 00 mW 100 Collector Current Ic Collector Power Dissipation P C (mW) 120 90 80 70 60 50 40 30 20 IB=10μA Ambient Temperature Ta ( ℃ ) Collector to Emitter Voltage VCE (V) D C C u r r e n t G a i n v s. Co l l e c t o r Cu r r e n t Typical Transfer Characteristics VC E=10V V CE=10V Collector Current I DC Current Gain C (mA) PC 130 Base Emitter Voltage V BE (V) C o l l e c t o r C u r r e n t IC ( m A ) SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002 ST 2SC1907 Base Time Constant vs Collector Current Base Time Constant r bb․CC (PS) Transition Frequency f T (MHz) Transition Frequency vs. Collector Current VC E=10V VCB=10V C o l l e c t o r C u r r e n t IC ( m A ) C o l l e c t o r C u r r e n t IC ( m A ) y rb = g rb+jb rb 1200 MHz 1000 900 800 400MHz 600 IC 1000 Input Conductance g ib (mS) 5m A 1200 A A VCB=10V Input end short 10 m V CB=10V Output end short 800 900 400 m =5 mA 10 m A 15 mA =1 5 600 IC Input Suceptance b ib (mS) y ib = g ib+jb ib Reverse Transfer Admittance Characteristics Reverse Transfer Conductance g rb (mS) SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002 Reverse Transfer Suceptance brb (mS) Input Admittance Characteristics ST 2SC1907 Output Admittance Characteristics yob = gob + jbob yfb = gfb+jbfb 600 800 VCB=10V output end short 900 1000 IC 1 0 =5 m 15 mA A mA A A mA 5m 5m =1 10 Output Suceptance bob(mS) 400MHz IC Forward Transfer Suceptance bfb (mS) Forward Transfer Admittance Characteristics V CB=10V Input end short 1200 Forward Transfer Conductance gfb (mS) Output Conductance gob (mS) SEMTECH ELECTRONICS LTD. (Subsidiary of Sino-Tech International Holdings Limited, a company listed on the Hong Kong Stock Exchange, Stock Code: 724) ® Dated : 07/12/2002