BD682 PNP Darlington Power Transistor, 100 V, 4 A, TO-126
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Prices updated: 13 Oct 2026
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About this product
A PNP Darlington power transistor in a TO-126 package, rated for 100 V collector-emitter voltage and 4 A collector current. Its high current gain lets a small base current control larger loads, such as relays, motor drivers and output stages in control and amplifier circuits. Use a heatsink at higher loads.
Specifications
- Type
- PNP Darlington power transistor
- Collector-emitter voltage (VCEO)
- 100 V
- Collector current
- 4 A
- Package
- TO-126
- Complementary type
- BD681 (NPN)
Frequently asked questions
What is the complementary NPN part for BD682?
The complementary NPN Darlington is the BD681, which is used in push-pull output stages alongside the BD682.
How do I drive it from a microcontroller?
As a PNP, its emitter goes to the positive supply and the base is pulled low to turn it on. Use a base resistor and check the datasheet for the required base drive, since Darlington transistors need more base-emitter voltage than single transistors.
