600 V N-Channel MOSFET in a through-hole I-PAK
The STD4NK60Z-1: It is housed in a TO-251-3 (I-PAK) through-hole package with short leads, intended for automated or manual insertion on single-sided boards or heatsink-mount applications.
This means STMicroelectronics is not actively promoting the part for new projects, though existing production may still be supported for a limited window. For a new BOM, a pin-compatible alternative from the same SuperMESH family should be evaluated.
The 600 V drain-source voltage gives adequate derating for a universal-input AC-DC converter where the rectified DC bus can reach 375 V. Gate charge of 26 nC at 10 V is moderate, so a standard gate driver or a resistor from a PWM controller can drive it without excessive switching losses at frequencies up to 100 kHz. Input capacitance of 510 pF at 25 V is low enough that the driver does not need a totem-pole buffer in most designs.