BLX21 NPN Transistor

The BLX21 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BLX21 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BLX21 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 BLX21 transistor as follows.

BLX21 Transistor Specification

Transistor Code		BLX21
Transistor Type		BJT
Transistor Polarity		NPN
Transistor Material		Silicon(SI)
Package		TO61
Collector Power Dissipation (Maximum)	PC	75W
Collector-Base Voltage (Maximum)	VCB	170V
Collector-Emitter Voltage (Maximum)	VCE	120V
Collector Current (Maximum)	IC	5A
Operating Junction Temperature (Maximum)	TJ	200°C
Emitter-Base Voltage (Maximum)	VEB	10V
Forward Current Transfer Ratio (hFE Value)		40

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