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2N4057 NPN Transistor

The 2N4057 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N4057 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N4057 transistor symbol shows an arrow from the base into the emitter. This means that the current flows from collector terminal to emitter terminal.

Circuit diagram symbol of the 2N4057 transistor as follows.

Circuit diagram symbol of the 2N4057 transistor

2N4057 Transistor Specification

Transistor Code 2N4057
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO202
Collector Power Dissipation (Maximum) PC 4W
Collector-Base Voltage (Maximum) VCB 150V
Collector-Emitter Voltage (Maximum) VCE 150V
Collector Current (Maximum) IC 0.1A
Operating Junction Temperature (Maximum) TJ 150°C
Forward Current Transfer Ratio (hFE Value) 30
Transition Frequency FT 15MHz
Collector Capacitance CC 12pF

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