2N4257 Specs and Replacement
Type Designator: 2N4257
Material of Transistor: Si
Polarity: PNP
Absolute Maximum Ratings
Maximum Collector Power Dissipation (Pc): 0.2 W
Maximum Collector-Base Voltage |Vcb|: 6 V
Maximum Collector-Emitter Voltage |Vce|: 6 V
Maximum Emitter-Base Voltage |Veb|: 4 V
Maximum Collector Current |Ic max|: 0.05 A
Max. Operating Junction Temperature (Tj): 125 °C
Electrical Characteristics
Transition Frequency (ft): 500 MHz
Collector Capacitance (Cc): 3 pF
Forward Current Transfer Ratio (hFE), MIN: 30
Package: TO18
2N4257 Substitution
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2N4257 datasheet
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Detailed specifications: 2N4250, 2N4250A, 2N4251, 2N4252, 2N4253, 2N4254, 2N4255, 2N4256, TIP42C, 2N4257A, 2N4258, 2N4258A, 2N4259, 2N426, 2N4260, 2N4260UB, 2N4261
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