The presence of Chinese manufacturers in the IGBT (Insulated Gate Bipolar Transistor) market is rising rapidly. Until the early 2020s, the market was dominated by European and Japanese players — Infineon, Mitsubishi Electric, Fuji Electric, and ABB, among others. However, backed by Chinese government policy support and the explosive growth of domestic EV demand, companies such as BYD Semiconductor, Starpower Semiconductor (斯達半導体), and CRRC Times (中車時代電気) have rapidly expanded their production capacity and raised their technical standards. By 2025, China's domestic IGBT chip self-sufficiency rate for passenger EVs is reported to have surpassed 50%.
The Rise of China in the IGBT Market — Background and Context
IGBTs are the core power semiconductors in power conversion systems, used widely in EVs, rail traction, industrial motors, and solar inverters. China's push to increase IGBT self-sufficiency as a national objective was motivated by the "semiconductor dependency risk" exposed by the US-China trade friction of 2019–2020. At the time, virtually all IGBT requirements for EVs were met by imports, and the risk of supply disruption was recognized as a serious issue by Chinese EV manufacturers.
In response to this awareness, the Chinese government designated power semiconductor localization as a key policy priority under its "Outline for Promoting the Development of the Semiconductor Industry," concentrating support through subsidies, preferential financing, and industrial funds. Starpower Semiconductor, BYD Semiconductor, and Yangzhou Guoyang Electronics were among the primary beneficiaries, with large-scale capital investment and technology acquisition carried out between 2021 and 2024.
The Three Leading Chinese IGBT Players
Starpower Semiconductor (斯達半導体)
Headquartered in Shanghai. Offers IGBT modules for automotive, industrial, solar, and rail applications. Has a track record supplying European customers and has obtained international quality certifications (AEC-Q101 compliant). Holds a top-tier domestic market share in China for automotive IGBTs. Began supplying European Tier 1 suppliers in 2023, marking the start of full-scale global expansion. Its product lineup covers a wide breakdown voltage range from 600V to 1700V.
BYD Semiconductor
The semiconductor subsidiary of the BYD Group. Optimizes mass-production costs by internally supplying its parent company's EV demand. Offers both automotive IGBTs and SiC MOSFETs, with its track record of deployment in BYD EVs serving as a quality proof point. The track record of installation in more than one million EVs annually provides a learning effect on quality that also confers an advantage over other Chinese manufacturers. External sales are limited, but medium-to-long-term expansion into external markets is anticipated.
CRRC Times (中車時代電気)
Has a world-class track record in IGBTs for rail applications. Its technical standards are high for traction inverters handling high voltage and large current, and it is leveraging its domestic rail infrastructure delivery record to expand into industrial and wind power applications. Has developed proprietary ultra-high-voltage IGBTs at 3,300V and 4,500V, and is said to have a technical level on par with European and Japanese peers for high-voltage, high-current specialty applications. Its track record meeting the stringent reliability requirements of rail applications forms the reliability foundation for industrial market expansion.
Price Competition and Current Quality Standing
Chinese-made IGBT modules are in many cases reported to be 20–40% cheaper than their European and Japanese counterparts. However, on the quality side, design engineers at industrial equipment manufacturers still note a gap with European and Japanese products in areas such as high-temperature cycle durability, variation in switching characteristics, and long-term reliability.
For EV applications, BYD has demonstrated quality through its own use, but the extent to which reliability data on externally sold products is disclosed is limited. Starpower Semiconductor emphasizes its AEC-Q101 certification as evidence of automotive-grade capability, but a gap remains compared to the 10–20 years of actual operating history data held by European and Japanese manufacturers.
For industrial applications (factories, air conditioning, solar, etc.), Chinese IGBT quality has reached practical levels more quickly, with adoption expanding in applications where cost is a priority. In particular, for fixed-speed motors with relatively few switching cycles and predominantly rated-load operation, the difference with European and Japanese products is less likely to manifest in actual failure rates.
High-Suitability Applications
Solar inverters (predominantly rated-load operation, relatively mild temperature cycling), industrial fixed-speed motors (few switching cycles), and UPS (low-stress operation). In these applications, the quality of Chinese-made IGBTs has reached practical levels, and they can be evaluated as cost-priority procurement sources.
Applications Requiring Caution
EV main drives (high temperature, high switching cycles), rail traction (long-term reliability requirements), and industrial servo drives (high switching frequency, rapid load transients). In these applications, the gap in reliability data versus European and Japanese manufacturers may affect failure risk, and detailed confirmation of ALT data is necessary.
Domains Under Ongoing Evaluation
Data center UPS and wind power inverters. Accumulation of long-term reliability data is progressing, and practical evaluations are expected to solidify between 2026 and 2028.
Counter-Strategies of European and Japanese Suppliers
In response to the rise of Chinese competitors, European and Japanese players such as Infineon, Mitsubishi Electric, and Fuji Electric are strengthening their differentiation strategies. The main directions are as follows:
Maintaining Technical Advantage: Combining next-generation IGBT development (refinement of trench-gate structures, low-Eoff designs) with accelerated transitions to SiC, shifting from simple cost competition to differentiation through technical capability.
Transparency in Reliability Assurance: There is a growing movement to expand the disclosure of accelerated life test data compliant with IEC 60749 and JEDEC JESD47, making numerical superiority in long-term reliability more visible.
Enhanced Design Support: Strengthening reference designs, simulation models, and application engineering support to provide value as system design partners beyond simple parts procurement.
Procurement Implications — A Three-Point Checklist
Verifying Quality Assurance Systems
Confirm certification status (AEC-Q101, IATF 16949, etc.) and the extent of ALT (Accelerated Life Test) data disclosure. Without established international certifications, independent quality verification costs will be incurred. Whether the supplier discloses the details of test conditions (temperature cycling conditions, cycle count, failure criteria) is key to assessing data credibility.
Considering a Dual-Sourcing Strategy
A dual-sourcing strategy — using European/Japanese suppliers as the primary source while evaluating Chinese suppliers as a supplement — is effective. It also functions as leverage in price negotiations, though the doubled spec-in effort should be factored in. It can also serve as a backup plan in the event of supply disruption due to export control risk.
Understanding Export Control Risk
Under US-China tensions, there is a risk of export controls on Chinese-made power semiconductors. IGBTs that fall under dual-use technology require continuous monitoring of regulatory developments. For organizations with a high proportion of China-sourced procurement, establishing an alternative procurement plan in advance in the event controls are imposed is a fundamental element of supply risk management.
Chinese IGBT quality is steadily improving, and an increasing number of products are reaching practical quality levels for industrial equipment and solar power generation applications. European and Japanese suppliers are shifting toward differentiation through added value — technical support, reliability assurance, and long-term supply commitment — and this competitive dynamic is expected to become even clearer going forward. For procurement managers, the path to optimizing the balance between cost and reliability is to clearly define quality requirements by application and design an appropriate allocation between European/Japanese and Chinese sources.