BDS21 PNP Transistor

The BDS21 is a bipolar junction transistor (BJT) with an PNP-type configuration. That means the BDS21 transistor has a negatively charged layer between two positively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BDS21 transistor symbol shows an arrow from the emitter into the base. This means that the current flows from emitter to collector terminal.

Circuit diagram symbol of the BDS21 transistor as follows.

BDS21 Transistor Specification

Transistor Code		BDS21
Transistor Type		BJT
Transistor Polarity		PNP
Transistor Material		Silicon(SI)
Package		TO220
Collector Power Dissipation (Maximum)	PC	50W
Collector-Emitter Voltage (Maximum)	VCE	80V
Collector Current (Maximum)	IC	5A
Operating Junction Temperature (Maximum)	TJ	200°C
Forward Current Transfer Ratio (hFE Value)		1000
Transition Frequency	FT	8MHz

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