IRFB18N50K N-Channel MOSFET 500V 17A TO-220AB
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Prices updated: 13 Oct 2026
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About this product
The IRFB18N50K is an N-channel power MOSFET in a TO-220AB package, rated at 500 V and 17 A. It suits switching applications such as switch-mode power supplies, power converters and motor control stages operating at high drain-source voltages.
Specifications
- Type
- N-channel MOSFET
- Drain-source voltage (VDS)
- 500 V
- Continuous drain current (ID)
- 17 A
- Package
- TO-220AB
Frequently asked questions
How does it compare with the STP12NM50?
Both are rated at 500 V. The IRFB18N50K has a 17 A continuous drain current rating, compared with 12 A for the STP12NM50, so it is the better choice where higher current is needed.
Does it need a gate driver?
Power MOSFETs of this class are normally driven with a gate voltage near 10 V. Check the datasheet's gate threshold and recommended drive before connecting it directly to a microcontroller pin, as a driver stage is usually required.
