2SD439 NPN Transistor

The 2SD439 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the 2SD439 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The 2SD439 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 2SD439 transistor as follows.

2SD439 Transistor Specification

Transistor Code		2SD439
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO126
Collector Power Dissipation (Maximum)	PC	8W
Collector-Base Voltage (Maximum)	VCB	20V
Collector-Emitter Voltage (Maximum)	VCE	18V
Collector Current (Maximum)	IC	1.2A
Operating Junction Temperature (Maximum)	TJ	150°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		320
Transition Frequency	FT	75MHz

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