IRF840 500V 8A TO-220 N-Channel MOSFET

IRF840 500V 8A Power N-Channel MOSFET – TO-220 Package by Vishay / STMicroelectronics

IRF840 is a high-voltage N-Channel MOSFET rated at 500V and 8A, designed for efficient switching in power electronics. Manufactured by Vishay and STMicroelectronics, it is ideal for switch-mode power supplies, DC-AC converters, audio amplifiers, and industrial motor drivers.

With a low on-resistance of 0.85Ω and fast rise time of 23ns, the IRF840 ensures reduced power loss and reliable high-frequency performance. Its TO-220 package supports strong thermal dissipation and allows easy integration with heatsinks for demanding environments.

The IRF840 features avalanche-rugged technology for high energy pulse handling and a low gate charge of 63nC, minimizing drive requirements in inverter and automation systems. High input impedance and stable switching make it suitable for renewable energy, UPS systems, and solid-state relays.

Engineers prefer the IRF840 for its durability, efficiency, and versatility in high-voltage applications. It operates across a wide temperature range and supports consistent performance in telecom, industrial, and consumer electronics.

Key Specs Voltage Rating: 500V Current Rating: 8A Continuous On-Resistance (R\_DS(on)\): 0.85Ω Gate Charge: 63nC Max Rise Time: 23ns Package: TO-220 Operating Temp: -55°C to +150°C Applications: Inverters, Audio Amplifiers, SMPS, UPS, Motor Drivers, DC-AC Converters Manufacturers: Vishay, STMicroelectronics