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BD543B NPN Transistor

The BD543B is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BD543B transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BD543B 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 BD543B transistor as follows.

Circuit diagram symbol of the BD543B transistor

BD543B Transistor Specification

Transistor Code BD543B
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO220
Collector Power Dissipation (Maximum) PC 70W
Collector-Base Voltage (Maximum) VCB 80V
Collector-Emitter Voltage (Maximum) VCE 80V
Collector Current (Maximum) IC 8A
Operating Junction Temperature (Maximum) TJ 150°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 40
Transition Frequency FT 3MHz

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