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2N4957UB 데이터시트(PDF) 2 Page - Semicoa Semiconductor |
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2N4957UB 데이터시트(HTML) 2 Page - Semicoa Semiconductor |
2 / 2 page Copyright 2002 Semicoa Semiconductors, Inc. Rev. D 333 McCormick Avenue, Costa Mesa, California 92626 714.979.1900, FAX 714.557.4541 Page 2 of 2 www.SEMICOA.com 2N4957UB Silicon PNP Transistor Data Sheet ELECTRICAL CHARACTERISTICS characteristics specified at TA = 25°C Off Characteristics Parameter Symbol Test Conditions Min Typ Max Units Collector-Emitter Breakdown Voltage V(BR)CEO IC = 1 mA 30 Volts Collector-Base Cutoff Current ICBO1 ICBO2 ICBO3 VCB = 20 Volts VCB = 30 Volts VCB = 20 Volts, TA = 150°C 100 100 100 nA µA µA Emitter-Base Cutoff Current IEBO1 VEB = 3 Volts 100 µA On Characteristics Pulse Test: Pulse Width = 300 µs, Duty Cycle ≤ 2.0% Parameter Symbol Test Conditions Min Typ Max Units DC Current Gain hFE1 hFE2 hFE3 hFE4 IC = 0.5 mA, VCE = 10 Volts IC = 2 mA, VCE = 10 Volts IC = 5 mA, VCE = 10 Volts IC = 5 mA, VCE = 10 Volts TA = -55°C 15 20 30 10 165 Dynamic Characteristics Parameter Symbol Test Conditions Min Typ Max Units Magnitude – Common Emitter, Short Circuit Forward Current Transfer Ratio |hFE| VCE = 10 Volts, IC = 2 mA, f = 100 MHz 12 36 Common-Emitter small signal power gain GPE IC = 2 mA, VCE = 10 Volts, f = 450 MHz 17 25 dB Noise Figure NF VCE = 10 Volts, IC = 2 mA, f = 450 MHz, RL = 50 Ω 3.5 dB Collector Base time constant rb’CC VCB = 10 Volts, IE = 2 mA, f = 63.6 MHz 1 8 ps Collector Base feedback capacitance Ccb VCB = 10 Volts, IE = 0 mA, 100 kHZ < f < 1 MHz 0.8 pF |
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