BD681 NPN Darlington Transistor 100V 4A TO-126
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Makers Electronics | BD681 NPN Silicon Transistor | 5 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 5 EGP
About this product
BD681 is an NPN Darlington power transistor rated 100 V and 4 A in a TO-126 package, with a minimum DC current gain of 750. Its built-in protection diode and high gain make it suitable for amplifying signals and switching medium-current loads. It is a common choice where a small base current must control a larger load current.
Specifications
- Type
- NPN Darlington
- Collector-emitter voltage (VCEO)
- 100 V
- Collector current (IC)
- 4 A
- DC current gain (hFE) min
- 750
- Package
- TO-126
- Built-in protection diode
- Yes
Frequently asked questions
What is the price of BD681 NPN Darlington Transistor 100V 4A TO-126 in Egypt?
BD681 NPN Darlington Transistor 100V 4A TO-126 currently costs 5 EGP in Egypt.
Where can I buy BD681 NPN Darlington Transistor 100V 4A TO-126 in Egypt?
BD681 NPN Darlington Transistor 100V 4A TO-126 is available from Makers Electronics. Compare the offers above to find the best price.
Can a microcontroller GPIO pin drive the BD681 directly?
Yes for light loads, because the gain is high. Use a series base resistor to limit the current from the pin, and make sure the load current is within the transistor and pin ratings.
Does it need a heatsink?
At higher load currents the transistor dissipates more heat, so a heatsink is recommended. Check the dissipation rating in the datasheet for your operating conditions.
