2N4040 NPN Transistor

The 2N4040 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N4040 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N4040 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 2N4040 transistor as follows.

2N4040 Transistor Specification

Transistor Code		2N4040
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO128
Collector Power Dissipation (Maximum)	PC	18W
Collector-Base Voltage (Maximum)	VCB	65V
Collector-Emitter Voltage (Maximum)	VCE	40V
Collector Current (Maximum)	IC	1A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	4V
Forward Current Transfer Ratio (hFE Value)		10
Transition Frequency	FT	400MHz
Collector Capacitance	CC	15pF

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