STD123ASF NPN Silicon Transistor Features • High β& low saturation transistor. hFE=400 Min. @VCE=1V, Ic=100mA • Suitable for large current drive directly. • Application for IRED Drive transistor in remote transmitter. PIN Connection 3 1 2 SOT-23F Ordering Information Type NO. STD123ASF Marking Package Code 12A □ SOT-23F ① ② ① Device Code ② Year&Week Code Absolute maximum ratings (Ta=25°C) Characteristic Symbol Ratings Unit Collector-Base voltage VCBO 10 V Collector-Emitter voltage VCEO 6 V Emitter-Base voltage VEBO 3 V Collector current IC 1 A Collector dissipation PC* 350 mW Junction temperature Tj 150 °C Storage temperature Tstg -55~150 °C * : Package mounted on 99.5% alumina 10×8×0.1mm Electrical Characteristics Characteristic (Ta=25°C) Symbol Test Condition Min. Typ. Max. Unit Collector-Base breakdown voltage BVCBO IC=50μA, IE=0 10 - - V Collector-Emitter breakdown voltage BVCEO IC=1mA, IB=0 6 - - V Emitter-Base breakdown voltage BVEBO IE=50μA, IC=0 3 - - V Collector cut-off current ICBO VCB=10V, IE=0 - - 0.1 μA Emitter cut-off current IEBO VEB=3V, IC=0 - - 0.1 μA DC current gain hFE VCE=1V, IC=100mA 400 - - - IC=500mA, IB=50mA - 0.1 0.3 V VCE=5V, IC=50mA - 260 - MHz Collector-Emitter saturation voltage Transistor frequency VCE(sat) fT Collector output capacitance Cob VCB=10V, IE=0, f=1MHz - 5 - pF On resistance RON f=1KHz, IB=1mA, VIN=0.3V - 0.6 - Ω KSD-T5C077-000 1 STD123ASF Electrical Characteristic Curves Fig. 1 PC - Ta Fig. 2 VCE(sat)-IC Fig. 3 COb-VCB Fig. 4 hFE-IC Fig. 5 RON-IB KSD-T5C077-000 2 STD123ASF Outline Dimension ※Recommend PCB solder land [Unit: mm] KSD-T5C077-000 3 STD123ASF The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring equipment, home appliance, etc.). Please make sure that you consult with us before you use these AUK Corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion control, all types of safety device, etc.). AUK Corp. cannot accept liability to any damage which may occur in case these AUK Corp. products were used in the mentioned equipments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice. KSD-T5C077-000 4