40397 NPN Transistor

The 40397 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 40397 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 40397 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 40397 transistor as follows.

40397 Transistor Specification

Transistor Code		40397
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO18
Collector Power Dissipation (Maximum)	PC	0.5W
Collector-Base Voltage (Maximum)	VCB	25V
Collector-Emitter Voltage (Maximum)	VCE	25V
Collector Current (Maximum)	IC	0.2A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	7V
Forward Current Transfer Ratio (hFE Value)		165
Transition Frequency	FT	50MHz
Collector Capacitance	CC	20pF

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