2N4955 NPN Transistor

The 2N4955 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N4955 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N4955 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 2N4955 transistor as follows.

2N4955 Transistor Specification

Transistor Code		2N4955
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		R137
Collector Power Dissipation (Maximum)	PC	0.45W
Collector-Base Voltage (Maximum)	VCB	30V
Collector-Emitter Voltage (Maximum)	VCE	25V
Collector Current (Maximum)	IC	0.03A
Operating Junction Temperature (Maximum)	TJ	125°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		150
Transition Frequency	FT	60MHz
Collector Capacitance	CC	6pF

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