BD439 Bipolar Transistor

Characteristics of BD439 Transistor

Type: NPN
Collector-Emitter Voltage, max: 60 V
Collector-Base Voltage, max: 60 V
Emitter-Base Voltage, max: 5 V
Collector Current − Continuous, max: 4 A
Collector Dissipation: 36 W
DC Current Gain (h_fe): 40 to 140
Transition Frequency, min: 3 MHz
Operating and Storage Junction Temperature Range: -65 to +150 °C
Package: TO-126

Pinout of BD439

Here is an image showing the pin diagram of this transistor.

Complementary PNP transistor

The complementary PNP transistor to the BD439 is the BD440.

Replacement and Equivalent for BD439 transistor

You can replace the BD439 with the 2N4922, 2N4922G, 2N4923, 2N4923G, BD189, BD439G, BD441, BD441G, BD787, BD787G, BD789, BD791, MJE223, MJE224, MJE225, MJE240, MJE241, MJE242, MJE243, MJE243G or MJE244.

Equivalent

Same transistor is also available in:

TO-126 package, BD433: 36 watts
TO-126 package, BD433G: 36 watts
TO-126 package, BD436: 36 watts
TO-126 package, BD436G: 36 watts
TO-126 package, BD442: 36 watts

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