SiC modules package silicon-carbide power devices together, combining SiC's low-loss, high-frequency properties with the power density of modular packaging — used in PV inverters and energy-storage converters that need high efficiency and power density. Compared with discrete solutions, module packaging lowers parasitic inductance and simplifies multi-die parallel wiring, enabling higher power output within a limited thermal footprint.
Reading the Key Parameters
- Vces (blocking voltage): voltage ratings recorded in the catalog are consistently 1200V, covering mainstream PV and energy-storage converter bus voltages — still leave margin above peak bus voltage.
- IC (rated current): half-bridge parts in the catalog span roughly 120–400A, matching different converter power tiers; derate against actual thermal conditions.
- RDS(on) (on-resistance, @Tj=25°C max): listed data runs roughly 2.2–13mΩ. Lower values mean less conduction loss, but note this is specified at 25°C junction temperature — resistance rises at actual operating temperature.
- Rth(J-C) (junction-to-case thermal resistance): half-bridge modules in the catalog run roughly 0.063–0.135K/W, reflecting heat-dissipation capability and setting the lower bound for heatsink selection.
- Configuration: the catalog includes half-bridge modules (packages such as A2.0, H1.0) alongside discrete/single-die parts; confirm the required topology before selecting.
Three Steps to Select
- Confirm the Vces class and topology (half-bridge, etc.) match the end circuit;
- Estimate conduction loss from RDS(on) against full-load current, checking resistance at actual junction temperature;
- Compare Rth(J-C) against the thermal design's resistance budget and confirm package/mounting interface fit.
Common Pitfalls
- Reusing thermal and drive designs from a same-current-class IGBT module without accounting for SiC's faster switching and its demands on parasitic inductance and drive capability;
- Selecting on room-temperature RDS(on) alone without factoring in the loss impact of resistance rise at high junction temperature;
- Overlooking module package parasitic-inductance differences, which can cause voltage overshoot in high di/dt applications.
More parts can be filtered by current, RDS(on), package and other criteria in the online selector; submit a part inquiry for specific fit questions.