EliteSiC MOSFETs from ON Semiconductor Corp. - rugged 1200 V power for demanding EV inverters

Reviewed: ad hoc news B2B & Pro desk. Edited and checked on 2026-06-27, 04:56. Details in the imprint.

EliteSiC MOSFETs from ON Semiconductor Corp. sit in metal cabinets that hum quietly next to fast-charging bays, feeding traction inverters while their ceramic packages stay cool to the touch. You do not see them, but every abrupt EV acceleration tells you they are working hard.

What EliteSiC aims to solve

EliteSiC MOSFETs target high-voltage, high-efficiency power stages in electric vehicles, renewable energy inverters and fast-charging infrastructure. ON Semiconductor uses silicon carbide to cut switching losses compared with traditional silicon IGBTs, enabling smaller heat sinks and tighter packaging in power modules. The official EliteSiC MOSFET portfolio page details voltage classes and typical applications.

Product manager Brandon Becker highlights that the 1200 V EliteSiC devices are designed to balance low R_DS(on) with robust avalanche performance, because automotive engineers want both efficiency and safety margins when designing traction inverters. Compared with earlier silicon designs, engineers can raise switching frequency, shrink magnetics and still stay within thermal budgets in standard automotive cooling loops.

Key specs in real projects

Typical EliteSiC MOSFETs for EV traction inverters offer blocking voltages of 750 V or 1200 V with continuous drain currents that fit 200 kW-class drive units. According to ON Semiconductor, gate charge and output capacitance values are tuned for fast switching with limited overshoot, which matters when an inverter is slammed from regenerative braking into full torque. A launch press release on new 1200 V EliteSiC parts underlines their automotive-grade target.

In a closed EV test bay, engineers report that EliteSiC-based inverters can cut total system losses by several percentage points compared with comparable silicon-based designs, which directly translates into extra driving range from the same battery pack. That efficiency gain also lets OEMs downsize cooling components, allowing tighter underfloor packaging and a flatter cabin floor that drivers and passengers can feel.

How designers work with it

EliteSiC MOSFETs come in discrete packages and in half-bridge and full-bridge modules, so OEMs can mix them into both bespoke inverter designs and off-the-shelf power stacks. Engineers like the tactile certainty of well-defined gate charge and threshold voltage, because lab oscilloscopes show clean switching edges rather than noisy ringing when layouts follow ON Semiconductor's reference designs.

SiC is unforgiving if layout is sloppy, and senior application engineer Jason Chiang spends a lot of time explaining gate loop inductance and snubber placement to customers who are moving from legacy IGBTs. Once teams adopt ON Semiconductor's layout and driver guidelines, EliteSiC devices reward them with consistent waveforms across temperature, which is vital when an SUV tows a trailer up a long highway incline.

Reliability and automotive grading

EliteSiC MOSFETs are qualified to AEC-Q101 for discrete devices and integrated into AEC-Q100-qualified power modules, aligning with automotive expectations on temperature cycling and high-temperature reverse bias robustness. According to ON Semiconductor, each device runs through burn-in and stress tests that simulate thousands of hours of field use. A news release on automotive-grade EliteSiC devices emphasizes this qualification path.

In practice, that means an inverter designer can place EliteSiC parts on liquid-cooled plates near the vehicle's front axle and be confident they will survive years of thermal cycling and road vibration. Engineers report that even after extended soak tests at high ambient temperatures, leakage and threshold shifts stay within tight data sheet limits, which keeps control algorithms predictable.

Where it fits in ON Semiconductor's strategy

EliteSiC is one pillar of ON Semiconductor's broader focus on power, sensing and connectivity for the so-called physical AI era, where data centers, EVs and industrial automation all rely on efficient power-conversion stages. CEO Hassane El-Khoury often points to SiC as a way for the company to capture more content per vehicle, because high-voltage power devices sit alongside image sensors and power-management ICs in modern architectures.

For retail investors, EliteSiC is less visible than a consumer gadget, yet it underpins long-term supply agreements with carmakers and tier-one suppliers in North America, Europe and Asia. ON Semiconductor shares (ISIN US6821891035) trade on Nasdaq in US dollars, and recent volatility around the announced Synaptics acquisition shows how strongly the market reacts when the company leans deeper into physical AI and high-value silicon content.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.