BU209A NPN Transistor

The BU209A is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BU209A transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BU209A 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 BU209A transistor as follows.

BU209A Transistor Specification

Transistor Code		BU209A
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO3
Collector Power Dissipation (Maximum)	PC	12.5W
Collector-Base Voltage (Maximum)	VCB	1500V
Collector-Emitter Voltage (Maximum)	VCE	800V
Collector Current (Maximum)	IC	4A
Operating Junction Temperature (Maximum)	TJ	115°C
Emitter-Base Voltage (Maximum)	VEB	5V
Forward Current Transfer Ratio (hFE Value)		2.5
Transition Frequency	FT	4MHz

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