Wolfspeed Unveils Fifth-Generation SiC Technology — Specific On-Resistance Reduced by up to 27% vs. Competing 1200V, Production-Ready on 200mm for Automotive and Industrial

On June 9, 2026, Wolfspeed announced its fifth-generation (Gen 5) SiC (silicon carbide) MOSFET technology. The company says it reduces specific on-resistance (RSP) by up to 27% versus commercially available competing 1200V solutions, achieving an industry-low level. The launch of a new generation while financial restructuring under Chapter 11 is underway suggests an intent to maintain competitiveness on the technology roadmap.

What the 27% RSP Reduction Means for Buyers

The core of Gen 5's appeal is a reduction of RSP (specific on-resistance — conduction resistance per unit chip area) by up to 27% versus competing 1200V parts. Lower RSP means the same on-resistance can be achieved in a smaller chip area, leading to lower die cost and smaller modules. Wolfspeed says it delivers maximum current density in a 5×5mm footprint even at high-temperature 175°C operation, contributing to smaller traction inverters and right-sized EV battery capacity. In EV power module procurement, Gen 5 may become the new baseline for competitive comparison.

Two-Voltage-Class Deployment Across 1200V and 750V

Gen 5 technology covers both the 1200V and 750V voltage classes, addressing both automotive traction inverters and industrial power supplies. The 750V class aims to capture non-automotive applications such as industrial inverters and high-power EV charging infrastructure, and is also intended for new use cases that replace mechanical relays with solid-state circuit breakers. The trend of building lineups per voltage tier is accelerating across makers, and designers increasingly select devices on both voltage class and loss characteristics.

200mm Production Readiness as a Supply-Side Differentiator

Gen 5 is said to be production-ready on Wolfspeed's qualified, ramp-ready 200mm (8-inch) manufacturing platform. The transition from sample to volume is one of the biggest risk factors for buyers; if the move to the 200mm line is complete, the path to volume shipment is relatively low-risk. With some competitors still centered on 150mm (6-inch) lineups, this can be a differentiator in real supply capability.

Note that the positioning of "setting a new efficiency benchmark" for EV charging infrastructure is the company's own claim, and installation-cost reduction effects from improved switching performance are premised on verification under real operating conditions.

Key Points for Design and Procurement Teams

Wolfspeed CBO Cengiz Balkas noted that Gen 5 arrived less than two years after the switching breakthrough of Gen 4. A sub-two-year generational cycle pushes OEMs and Tier 1s to revisit design-in timing management and the renewal cycle of long-term procurement contracts. At the same time, Wolfspeed is mid-restructuring, so long-term supply certainty should be judged together with a supply-risk assessment. Performance figures are nominal; actual effects depend on gate-drive design, switching frequency, and temperature, so real-condition verification via double-pulse testing on an evaluation board is recommended.

Reference Fact Cards