CHENMKO ENTERPRISE CO.,LTD CHT1544RNPT SURFACE MOUNT Dual Silicon Transistor VOLTAGE 20 Volts CURRENT 300 mAmpere APPLICATION * Switching circuit, Inverter, Interface circuit, Driver circuit. FEATURE * Small surface mounting type. (SC-74A) * High current gain. * Suitable for high packing density. * * * * SC-74A Low colloector-emitter saturation. High saturation current capability. Both the NPN digital silicon transistor in one package. Built in bias resistor(R1=2.2kΩ, Typ. ) (1) (5) 0.95 1.7~2.1 2.7~3.1 0.95 MARKING (2) *HFE(A) : 44A *HFE(B) : 44B (3) 0.25~0.5 1.4~1.8 0.935~1.3 0.08~0.2 0~0.15 0.3~0.6 5 CIRCUIT 1 4 2 3 2.6~3.0 SC-74A Dimensions in millimeters LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL PARAMETER VALUE CONDITIONS UNIT VCBO Coll ector -Base voltage 50 V VCEO Collector-Emitter voltage 20 V VEBO Emitter-Base voltage 25 V IC Coll ector current 300 mA PD Collector Power dissipation 300 mW TSTG Storage temperature −55 ∼ +150 O TJ Junction temperature +150 O C 350 O C/W RθJ-S Thermal resistance , Note 1 Tamb ≤ 25 OC, Note 1 junction - soldering point C Note 1. Total rating 2004-02 RATING CHARACTERISTIC ( CHT1544RNPT ) CHARACTERISTICS Tamb = 25 °C unless otherwise speciÞed. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT ICBO Collector cutoff current VCB=50V − − 0.1 uA IEBO Emitter cutoff current VEB=25V − − 0.1 uA VCE(sat) Collector-emitter saturation voltage IC/IB=10mA/1mA − − 0.1 V hFE DC current gain IC=4mA; VCE=2.0V 200 − 1200 R1 Input resistor 1.54 2.2 2.86 KΩ fT Transition frequency − 30 − MHz Note 1.hFE Classification A: 200 to 700, B: 350 to 1200 IC=4mA, VCE=6.0V RATING CHARACTERISTIC CURVES ( CHT1544RNPT ) Fig.1 DC current gain vs. collector current DC CURRENT GAIN : hFE 2k VCE=2V 1k 300 Ta=100OC 25OC -25OC 100 50 300u 1m 10m 100m COLLECTOR CURRENT : IC (A) 500m COLLECTOR SATURATION VOLTAGE : VCE(sat) (V) Typical Electrical Characteristics Fig.2 Collector-emitter saturation voltage vs. collector current 500m lC/lB=20 200m 100m 50m 20m Ta=100OC 25OC -25OC 10m 5m 2m 1m 100u 1m 10m 100m COLLECTOR CURRENT : IC (A) 500m