IRLI540N Power MOSFET: Isolated Package & High Current Output

High-power designs need robust insulation when mounted directly to heat sinks. The IRLI540N resolves mechanical isolation challenges without requiring separate mica washers or plastic insulating sleeves. Encapsulated in a fully isolated TO-220 FullPak through-hole package, this N-channel power switch handles a 100V breakdown voltage alongside a continuous drain current rating of 21A. Logic-level gate drive capability allows the switch to operate directly from low-voltage digital controllers. Additionally, its maximum on-resistance of 44 mΩ curbs conduction losses, preserving circuit efficiency under demanding continuous power loads. This combination of electrical isolation and thermal endurance makes the IRLI540N a reliable component for industrial motor controls, switched-mode power supplies, and heavy DC load switching applications. Florida Circuit backs your assembly schedules with authentic, fully traceable semiconductor inventory. We inspect supplier stock rigorously to safeguard your production output. Check current lead times, request a custom price quote, and source the IRLI540N for your builds today.