TRF644 NPN Transistor

The TRF644 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the TRF644 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The TRF644 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 TRF644 transistor as follows.

TRF644 Transistor Specification

Transistor Code		TRF644
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		M111
Collector Power Dissipation (Maximum)	PC	117W
Collector-Base Voltage (Maximum)	VCB	36V
Collector-Emitter Voltage (Maximum)	VCE	12.5V
Collector Current (Maximum)	IC	5A
Forward Current Transfer Ratio (hFE Value)		100
Transition Frequency	FT	470MHz
Collector Capacitance	CC	4pF

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