The BD139 NPN Bipolar Junction Transistor TO-126 is designed for medium power amplification and switching applications. It offers stable performance, high current handling, and low distortion for practical electronics projects. The BD139 NPN Bipolar Junction Transistor TO-126 by StemVolt is ideal for diy circuits, educational electronics, and robotics projects requiring reliable amplification and control.
Related Products:
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TIP41 NPN transistor for medium power circuits
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2N3055 transistor for high current applications
Specifications:
| Parameter | Details |
|---|---|
| Transistor Polarity | NPN |
| Collector−Emitter Voltage (VCEO) | 80 V |
| Continuous Collector Current (Ic) | 1.5 A |
| Power Dissipation | 12.5 W |
| DC Current Gain (hFE) | 40–160 |
| Package Type | TO-126 |
| Power Dissipation (Pd) | 12.5W |
Features:
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Medium power NPN transistor for amplification
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High current handling for reliable operation
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Low distortion in audio circuits
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TO-126 package for easy mounting
Package Includes:
1 × BD139 NPN Bipolar Junction Transistor TO-126


















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