1200 V SiC MOSFET — the conduction-loss floor at 60 A
The SCTWA60N120G2-4: The 52 mOhm typical on-resistance at 18 V gate drive sets the conduction loss per amp — at 30 A the voltage drop is about 1.56 V, which keeps the dissipation manageable in a TO-247-4 package rated for 388 W case-limited power.
Gate drive and switching — 94 nC total gate charge
Total gate charge is 94 nC at 18 V, which means a 1 A gate driver can switch the FET in about 94 ns — fast enough for 50–100 kHz hard-switched topologies. The input capacitance Ciss is 1969 pF at 800 V drain-source, so the driver sees a moderate capacitive load; a standard 2 A totem-pole driver handles it without excessive cross-conduction. The gate threshold voltage is 5 V maximum at 1 mA drain current, which gives good noise margin against spurious turn-on in half-bridge configurations. The recommended drive voltage for minimum Rds(on) is 18 V, with an absolute maximum of +22 V and -10 V.
Thermal and mechanical — TO-247-4 through-hole
The TO-247-4 package has four leads — the extra Kelvin-source pin reduces the common-source inductance in the gate loop, which improves switching performance and reduces ringing. The junction temperature range is -55°C to 200°C, making it suitable for high-temperature environments like industrial motor drives, solar inverters, and EV charging stations where the heatsink can run hot. The through-hole mounting simplifies manual assembly and rework, though the large tab area needs a good thermal interface to the heatsink — plan for a thermal pad or grease rated for 200°C continuous.