2N257W PNP Transistor

The 2N257W is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the 2N257W transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N257W transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the 2N257W transistor as follows.

2N257W Transistor Specification

Transistor Code		2N257W
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Germanium(GE)
Package		TO3
Collector Power Dissipation (Maximum)	PC	45W
Collector-Base Voltage (Maximum)	VCB	40V
Collector-Emitter Voltage (Maximum)	VCE	35V
Collector Current (Maximum)	IC	3A
Operating Junction Temperature (Maximum)	TJ	85°C
Emitter-Base Voltage (Maximum)	VEB	20V
Forward Current Transfer Ratio (hFE Value)		60
Transition Frequency	FT	0.1MHz

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