20N50 500V 20A N-Channel MOSFET

20N50 500V 20A N-Channel Power MOSFET – TO-220 Package

The 20N50 is a high-voltage N-Channel power MOSFET rated at 500V and 20A, built using planar DMOS or UniFET technology. It offers low on-resistance (typically 0.23Ω), fast switching characteristics, and high avalanche energy capability, making it suitable for power switching applications such as SMPS, UPS, DC/DC converters, and motor drive circuits.

Housed in a TO-220 package, the 20N50 delivers efficient thermal performance and supports junction temperatures up to 150°C. With a gate charge of approximately 60nC and output capacitance around 350pF, the device ensures low gate drive losses and stable operation in high-frequency switching environments. The device is also avalanche-rated and tested for rugged dv/dt conditions, supporting use in both industrial and consumer-grade power designs.

Key Specs Voltage Rating: 500V Current Rating: 20A Continuous (80A Pulsed) Technology: N-Channel, Planar DMOS / UniFET Package: TO-220 On-Resistance: ~0.23Ω (max 0.27Ω) Gate Charge: ~60nC Switching: Fast rise/fall with low gate losses Thermal Performance: Up to 150°C junction temperature Applications: SMPS, UPS, Motor Drives, DC/DC Converters Brand: Various (e.g., UTC, NELL, Fairchild equivalents) Compliance: Avalanche Rated, RoHS (varies by manufacturer)