# ON Semiconductor Cancels Projected Two Billion Dollar Silicon Carbide Facility Expansion Source: TechNewsList (https://technewslist.com) Canonical URL: https://technewslist.com/en/article/on-semiconductor-cancels-two-billion-dollar-silicon-carbide-p-2026-11-08-morning Section: Hardware (https://technewslist.com/en/hardware) Author: TechNewsList Language: en Published: 2026-11-08T05:55:43.65+00:00 Updated: 2026-11-08T05:55:43.652647+00:00 > Leading automotive power chip supplier ON Semiconductor has scrapped plans for a projected two billion dollar silicon carbide manufacturing plant in the Czech Republic, curbing capital expenditure as electric vehicle adoption recalibrates. ## TL;DR - ON Semiconductor cancelled its projected $2 billion silicon carbide fabrication expansion in Roznov, Czech Republic. - The chipmaker stated existing manufacturing operations and current local workforce will continue without disruption. - The cancellation highlights broader capital expenditure retrenchment across the automotive semiconductor supply chain. - Automakers scaling back near-term electric vehicle production targets has slowed demand for wide-bandgap power chips. ## Key points - The planned multi-billion dollar Czech facility was intended to serve as a flagship European silicon carbide wafer fabrication hub. - Automotive manufacturers are extending hybrid powertrain lifecycles, reducing immediate demand for high-cost SiC inverters. - ON Semiconductor is preserving balance sheet liquidity by optimizing capacity across existing North American and Asian fabs. - The decision follows similar capacity adjustments by peer power chipmakers, signaling an end to speculative wafer fab additions. - Silicon carbide remains vital for high-voltage DC fast charging, but near-term capacity additions have exceeded current absorption. ## What happened Global power and sensing chip manufacturer ON Semiconductor has officially cancelled plans for a projected two billion dollar silicon carbide (SiC) wafer fabrication facility expansion in Roznov pod Radhostem, Czech Republic. The multi-billion dollar project, which was initially unveiled as a cornerstone European investment to produce high-voltage power semiconductors for electric vehicles and renewable energy systems, has been shelved following a comprehensive review of global manufacturing capacity and automotive demand trajectories. Corporate representatives confirmed that while the massive capital expenditure project has been abandoned, existing wafer processing operations and current employment levels at the established Roznov site will continue uninterrupted. The decision comes after several quarters of shifting demand signals from European and North American automakers, who have moderated their near-term battery electric vehicle production schedules in favor of extended plug-in hybrid model portfolios. ![High-resolution die photography of a semiconductor integrated circuit showcasing microscopic architecture.](https://technewslist.com/storage/v1/object/public/media/api/1794117339283-7zang8-on-semiconductor-cancels-two-billion-dollar-silicon-carbide-p-2026-11-08-morning-inside-1-023136079a.webp) *High-resolution die photography of a semiconductor integrated circuit showcasing microscopic architecture.* The cancellation represents one of the largest industrial semiconductor retrenchments in Europe this year, dealing a setback to regional aspirations under the European Chips Act, which aimed to double the continent's global chip manufacturing share to twenty percent by 2030 through generous state subsidy packages and accelerated permitting frameworks. ## Why it matters Silicon carbide has long been hailed as the premier wide-bandgap semiconductor material required to revolutionize modern power electronics. Compared to legacy silicon power metal-oxide-semiconductor field-effect transistors (MOSFETs) and insulated-gate bipolar transistors (IGBTs), silicon carbide devices operate at substantially higher breakdown voltages, switch at significantly faster frequencies, and dissipate far less thermal energy. In electric vehicles, substituting silicon carbide inverters into traction drive units yields efficiency gains that translate directly into extended vehicle range and reduced battery pack weight. However, synthesizing high-purity silicon carbide crystal boules and manufacturing defect-free eight-inch substrate wafers is an exceptionally capital-intensive and chemically complex manufacturing endeavor. During the post-pandemic supply chain crisis, global automakers signed aggressive long-term capacity reservation agreements with power semiconductor suppliers, encouraging suppliers to break ground on massive greenfield fab projects. As consumer adoption curves for battery electric vehicles decelerated throughout 2025 and 2026, those aggressive volume forecasts failed to materialize at the projected pace. By pulling the plug on the two billion dollar Czech expansion, ON Semiconductor is moving decisively to protect operating margins and preserve corporate free cash flow rather than risk bringing expensive underutilized cleanroom capacity online during a cyclical automotive downturn. ## Technical details The fundamental technical challenge of silicon carbide manufacturing centers on physical crystal growth dynamics. While traditional silicon ingots are grown using the mature Czochralski method—where molten silicon at approximately 1,400 degrees Celsius is pulled into uniform cylindrical boules within a few days—silicon carbide cannot be melted at atmospheric pressure. Instead, crystal manufacturers must utilize physical vapor transport (PVT) or sublimation techniques operating at extreme temperatures exceeding 2,200 degrees Celsius inside specialized vacuum graphite furnaces. Under physical vapor transport, silicon and carbon source powders sublime and slowly deposit onto a seed crystal over several weeks, yielding relatively short crystal pucks prone to crystallographic defects, micropipes, and basal plane dislocations. These structural defects degrade high-voltage breakdown resistance and depress manufacturing die yields, resulting in wafer processing costs that are several times higher than conventional silicon. ![Detailed microphotograph of semiconductor silicon die showing internal circuit layout.](https://technewslist.com/storage/v1/object/public/media/api/1794117340611-rluuxk-on-semiconductor-cancels-two-billion-dollar-silicon-carbide-p-2026-11-08-morning-inside-2-880ab77b9f.webp) *Detailed microphotograph of semiconductor silicon die showing internal circuit layout.* Moreover, the global semiconductor industry is actively navigating an expensive technical transition from six-inch (150mm) to eight-inch (200mm) silicon carbide wafers. While eight-inch substrates substantially increase the number of usable dies per wafer and improve overall factory economics, the tooling, chemical-mechanical planarization (CMP) equipment, and epitaxial deposition reactors required to process larger, more brittle wafers require billions of dollars in upfront capital investments that demand guaranteed high-volume factory utilization to amortize. ## Market / industry impact ON Semiconductor's cancellation reverberates across the broader power semiconductor competitive landscape, which includes major competitors such as STMicroelectronics, Wolfspeed, Infineon Technologies, and Rohm Semiconductor. Wolfspeed and other pure-play SiC manufacturers have similarly encountered severe balance sheet strain and fab consolidation pressures as wafer pricing declined amid expanding Chinese domestic foundry capacity. Chinese semiconductor manufacturers, heavily subsidized by national industrial development funds, have accelerated the commissioning of domestic six-inch and eight-inch silicon carbide foundries, substantially lowering global pricing for standard industrial-grade power MOSFETs. While automotive OEMs maintain stringent qualification standards that favor Western suppliers, the emergence of lower-cost alternatives has curtailed the pricing premiums Western chipmakers previously commanded. For European industrial policymakers, the loss of the Roznov expansion underscores the limitations of government subsidy incentives when macroeconomic commercial demand falters. Without guaranteed, multi-year volume commitments from regional European automotive original equipment manufacturers, global semiconductor corporations will consistently prioritize capital discipline over geopolitical fab localization targets. ## What to watch next Investors and supply chain planners will monitor ON Semiconductor's upcoming fourth-quarter earnings conference call for additional details regarding revised capital expenditure guidance for 2027. Industry analysts will examine whether the company plans further fab consolidations or structural shifts toward fab-lite manufacturing partnerships for mature product categories. Automotive procurement teams will also track whether peer suppliers like STMicroelectronics and Infineon follow suit with capacity postponements. As global automotive electrification roadmaps realign toward hybrid architectures and next-generation battery chemistries, the power semiconductor industry will continue recalibrating its physical manufacturing footprint to match realistic consumer adoption timelines. ## Sources - [Briefs News](https://www.briefs.co/news/on-semiconductor-cancels-up-to-2-billion-czech-expansion/) - [ON Semiconductor Corporate Profile](https://en.wikipedia.org/wiki/Onsemi) - [Silicon Carbide Materials Science](https://en.wikipedia.org/wiki/Silicon_carbide) Mentions: ON Semiconductor, Silicon Carbide, Czech Republic, Electric Vehicles, Semiconductor Manufacturing ## Sources - [Briefs News](https://www.briefs.co/news/on-semiconductor-cancels-up-to-2-billion-czech-expansion/) - [ON Semiconductor Corporate Profile](https://en.wikipedia.org/wiki/Onsemi) - [Silicon Carbide Materials Science](https://en.wikipedia.org/wiki/Silicon_carbide)