# IRF840 transistor

> IRF840 power MOSFET transistor in a TO-220 package, designed for switching and controlling high-voltage loads. It offers 500 V drain-source voltage, a continuous current of 8 A, an Rds(on) resistance of 0.85 ohms (850 mOhms) and a maximum Vgs of 20 V. Suitable for switching power supplies, inverters and converters.

- Page: https://sigmanortec.ro/en/irf840-transistor
- Price: 4.24 RON
- Availability: In stock; 1-2 zile
- Reference: 33037 · EAN: 5941107377273
- Category: Electronic components > Transistors > MOSFETs
- Package (shipping data): 0.004 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:57 (Europe/Bucharest)

## Description

Power MOSFET for switching and controlling high voltage loads, suitable for switching power supplies, inverters and converters. Offers 500 V between drain and source, 8 A continuous current, Rds(on) resistance of 0.85 ohms for low losses, easy-to-mount TO-220 package and efficient dissipation, Vgs maximum 20 V.
IRF 840 transistor, TO-220 case, 500V 8A
Id - Continuous Drain Current: 8 A
Vds - Drain-Source Breakdown Voltage: 500 V
Rds On - Drain-Source Resistance: 850 mOhms
Vgs - Gate-Source Breakdown Voltage: 20 V