40491 NPN Transistor

The 40491 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 40491 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 40491 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 40491 transistor as follows.

40491 Transistor Specification

Transistor Code		40491
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO66
Collector Power Dissipation (Maximum)	PC	3.8W
Collector-Base Voltage (Maximum)	VCB	300V
Collector-Emitter Voltage (Maximum)	VCE	300V
Collector Current (Maximum)	IC	0.15A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	2V
Forward Current Transfer Ratio (hFE Value)		30
Transition Frequency	FT	13MHz
Collector Capacitance	CC	10pF

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