BF257CSM4 NPN Transistor

The BF257CSM4 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BF257CSM4 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BF257CSM4 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 BF257CSM4 transistor as follows.

BF257CSM4 Transistor Specification

Transistor Code		BF257CSM4
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		LCC3
Collector Power Dissipation (Maximum)	PC	5W
Collector-Base Voltage (Maximum)	VCB	160V
Collector-Emitter Voltage (Maximum)	VCE	160V
Collector Current (Maximum)	IC	0.1A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		25
Transition Frequency	FT	90MHz

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