Fairchild 2N4123 manual NPN General Purpose Amplifier Electrical Characteristics

NPN General Purpose Amplifier

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Electrical Characteristics		TA = 25°C unless otherwise noted
Symbol	Parameter		Test Conditions	Min	Max	Units
OFF CHARACTERISTICS
V(BR)CEO	Collector-Emitter Breakdown Voltage*		IC = 1.0 mA, IB = 0	30		V
V(BR)CBO	Collector-Base Breakdown Voltage		IC = 10 μA, IE = 0	40		V
V(BR)EBO	Emitter-Base Breakdown Voltage		IE = 10 μA, IC = 0	5.0		V
ICBO	Collector Cutoff Current		VCB = 20 V, IE = 0		50	nA
IEBO	Emitter Cutoff Current		VEB = 3.0 V, IC = 0		50	nA
ON CHARACTERISTICS*
hFE	DC Current Gain		VCE = 1.0 V, IC = 2.0 mA	50	150
			VCE = 1.0 V, IC = 50 mA	25
VCE(sat)	Collector-Emitter Saturation Voltage		IC = 50 mA, IB = 5.0 mA		0.3	V
VBE(sat)	Base-Emitter Saturation Voltage		IC = 50 mA, IB = 5.0 mA		0.95	V
SMALL SIGNAL CHARACTERISTICS
Cob	Output Capacitance		VCB = 5.0 V, f = 100 kHz		4.0	pF
Cib	Input Capacitance		VEB = 0.5 V, f = 0.1 MHz		8.0	pF
hfe	Small-Signal Current Gain		IC = 2.0 mA, VCE = 10 V,
			f = 1.0 kHz	50	200
			IC = 10 mA, VCE = 20 V,
			f = 100 MHz	2.5
fT	Current Gain - Bandwidth Product		IC = 10 mA, VCE = 20 V	250		MHz
			f = 100 MHz
NF	Noise Figure		VCE = 5.0 V, IC = 100 μA,		6.0	dB
			RS = 1.0 kΩ,
			BW = 10 Hz to 15.7 kHz
*Pulse Test: Pulse Width ≤ 300 μs, Duty Cycle ≤ 2.0%

2N4123