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BD439 NPN Transistor

The BD439 is a bipolar junction transistor (BJT) with an NPN-type configuration. That means the BD439 transistor has a positively charged layer between two negatively charged layers. This transistor has three terminals Base, Collector, and Emitter.

The BD439 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 BD439 transistor as follows.

Circuit diagram symbol of the BD439 transistor

BD439 Transistor Specification

Transistor Code BD439
Transistor Type BJT
Transistor Polarity NPN
Transistor Material Silicon(SI)
Package TO126
Collector Power Dissipation (Maximum) PC 36W
Collector-Base Voltage (Maximum) VCB 60V
Collector-Emitter Voltage (Maximum) VCE 60V
Collector Current (Maximum) IC 4A
Operating Junction Temperature (Maximum) TJ 150°C
Emitter-Base Voltage (Maximum) VEB 5V
Forward Current Transfer Ratio (hFE Value) 25
Transition Frequency FT 3MHz

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