SD1439 NPN Transistor

The SD1439 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the SD1439 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The SD1439 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 SD1439 transistor as follows.

SD1439 Transistor Specification

Transistor Code		SD1439
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		SOT122
Collector Power Dissipation (Maximum)	PC	8.75W
Collector-Base Voltage (Maximum)	VCB	45V
Collector-Emitter Voltage (Maximum)	VCE	24V
Collector Current (Maximum)	IC	0.5A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	3.5V
Forward Current Transfer Ratio (hFE Value)		15
Transition Frequency	FT	860MHz
Collector Capacitance	CC	5pF

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