STFN42 NPN Transistor

The STFN42 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the STFN42 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The STFN42 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 STFN42 transistor as follows.

STFN42 Transistor Specification

Transistor Code		STFN42
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		SOT89
Transistor SMD Code		N42
Collector Power Dissipation (Maximum)	PC	1.4W
Collector-Base Voltage (Maximum)	VCB	700V
Collector-Emitter Voltage (Maximum)	VCE	400V
Collector Current (Maximum)	IC	1A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	9V
Forward Current Transfer Ratio (hFE Value)		10

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