BD441 Bipolar Transistor

Characteristics of BD441 Transistor

Type: NPN
Collector-Emitter Voltage, max: 80 V
Collector-Base Voltage, max: 80 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 BD441

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

Complementary PNP transistor

The complementary PNP transistor to the BD441 is the BD442.

SMD Version of BD441 transistor

The BDP951 (SOT-223) is the SMD version of the BD441 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.

Replacement and Equivalent for BD441 transistor

You can replace the BD441 with the 2N4923, 2N4923G, BD441G, BD789, BD791, MJE240, MJE241, MJE242, MJE243, MJE243G or MJE244.

Equivalent

Same transistor is also available in:

TO-3P package, BD250C: 125 watts
TO-126 package, BD435: 36 watts
TO-126 package, BD435G: 36 watts
TO-126 package, BD438: 36 watts
TO-126 package, BD438G: 36 watts

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