2N1644 NPN Transistor

The 2N1644 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2N1644 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2N1644 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 2N1644 transistor as follows.

2N1644 Transistor Specification

Transistor Code		2N1644
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO5
Collector Power Dissipation (Maximum)	PC	0.6W
Collector-Base Voltage (Maximum)	VCB	60V
Collector Current (Maximum)	IC	0.5A
Operating Junction Temperature (Maximum)	TJ	175°C
Forward Current Transfer Ratio (hFE Value)		40
Transition Frequency	FT	50MHz
Collector Capacitance	CC	35pF

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