2SD1781K NPN General Purpose Transistors 3 P b Lead(Pb)-Free 1 2 SOT-23 Features: *Very Low VCE(sat) V CE(sat) < 0.4 V (Typ.) (I C / IB = 500mA / 50mA) *High Current Capacity in Compact Package. *Complements The 2SB1197 *We Declare That The Material of Product Compliance With RoHS Requirements. MAXIMUM RATINGS(Ta=25°C) Symbol Value Unit Collector-Emitter Voltage VCEO 32 V Collector-Base Voltage VCBO 40 V Emitter-Base Voltage VEBO 5.0 V 0.8 A(DC) Rating Collector Current IC 1.5 A(Pulse)*1 Total Device Dissipation TA=25°C PD 200 mW Junction Temperature Tj +150 °C Storage Temperature Tstg -55 to +150 °C note: 1.Single pulse Pw = 100ms WEITRON http://www.weitron.com.tw 1/4 14-Nov-2012 2SD1781K ELECTRICAL CHARACTERISTICS Characteristics Symbol Min Typ Max Unit Collector-Emitter Breakdown Voltage IC = 1mA V(BR)CEO 32 - - V Collector-Base Breakdown Voltage IC = 50µA V(BR)CBO 40 - - V Emitter-Base Breakdown Voltage IE= 50µA V(BR)EBO 5.0 - - V Collector Cutoff Current VCB = 20V ICBO - - 0.5 µA Emitter Cutoff Current VEB = 4V IEBO - - 0.5 µA VCE(sat) - - 0.4 V hFE 120 - 390 fT - 150 - MHz C ob - 10 - pF ON CHARACTERISTICS Collector-Emitter Saturation Voltage IC = 500mA, I B = 50mA DC Current Transfer Ration VCE = 3V, I C = 100mA SMALL-SIGNAL CHARACTERISTICS Transition Frequence VCE = 5V, I E =-50mA, f = 100MHz Collector Output Capacitance VCB =10V, IE = 0, f = 1MHz Classification of hFE Rank Q R Range 120-270 180-390 Marking AFQ AFR WEITRON http://www.weitron.com.tw 2/4 14-Nov-2012 2SD1781K Electrical characteristic curves WEITRON http://www.weitron.com.tw 3/4 14-Nov-2012 2SD1781K SOT-23 Outline Dimension SOT-23 A B TOP VIEW Dim A B C D E G H J K L M C D E G H K J WEITRON http://www.weitron.com.tw L M 4/4 Min 0.35 1.19 2.10 0.85 0.46 1.70 2.70 0.01 0.89 0.30 0.076 Max 0.51 1.40 3.00 1.05 1.00 2.10 3.10 0.13 1.10 0.61 0.25 14-Nov-2012