600 V FDmesh II N-channel in a full-pack TO-220
The STMicroelectronics STF30NM60ND is a 600 V, 25 A N-channel power MOSFET from the FDmesh™ II series, housed in a TO-220-3 Full Pack (TO-220FP) through-hole package. The FDmesh II technology integrates a fast-recovery body diode, making this part suited for bridge topologies and hard-switching converters where reverse-recovery losses matter. The full-pack package provides electrical isolation between the tab and the heatsink, simplifying mounting — no insulating pad or washer needed, which speeds assembly and improves thermal contact consistency.
Key ratings for the power budget
The 600 V drain-source voltage (Vdss) places this MOSFET in the high-voltage class for offline AC-DC converters, PFC stages, and flyback supplies up to several hundred watts. Gate charge of 100 nC at 10 Vgs tells you the drive energy per switching cycle — relevant when sizing the gate driver and estimating switching losses at frequency.