The assumption that "Chinese IGBTs are 30–50% cheaper than European and Japanese equivalents" is becoming entrenched in procurement circles. But to understand the structure behind that "cheapness," the fastest route is to examine the financial data of Chinese manufacturers themselves. This article untangles what listed-company disclosures reveal and the hidden costs that lie beyond the device unit price.
The Reality of Price Competition — What Chinese Margins Reveal
In its FY2024 results, Shanghai-listed Starpower Semiconductor (603290.SS) reported a gross margin decline of approximately six percentage points, falling from 37.51% to 31.55% year-on-year. Revenue also contracted 7.4% to CNY 3.39 billion. Despite new energy (EV and renewable energy) being its core segment, price competition-driven unit price erosion hit earnings directly.
Similarly, Hong Kong-listed CRRC Times Electric (3898.HK) explicitly cited margin compression in its semiconductor division in the 2025 annual report, attributing it to intensifying price competition for IGBTs serving China's domestic EV and rail markets, alongside rising manufacturing costs.
What this signals is that the "low prices" of Chinese IGBTs do not necessarily reflect a structurally lower cost base — they are largely the product of an aggressive pricing push to capture market share. Whether prices recover once competition stabilizes, or whether declining profitability erodes investment in supply capacity and quality maintenance, remains uncertain. This uncertainty is a risk factor that procurement planning must account for.
European Players Continue to Expand Share
Despite this pricing pressure, Infineon Technologies expanded its global power semiconductor market share to 36.0% in 2025, up 3.9 percentage points year-on-year (April 2026 press release). In the FY2025 Q4 earnings call (November 2025), CEO Jochen Hanebeck acknowledged price competition in China's EV market as a "headwind for the automotive segment," while asserting that the company maintains its competitiveness through technological leadership and customer co-development.
Infineon and Mitsubishi Electric continue to lead the mid-to-high-end market. Chinese players — BYD Semiconductor, Starpower, and CRRC — are rapidly expanding share primarily in the low-to-mid-tier domestic Chinese market. China's domestic self-sufficiency rate for passenger EV IGBTs reportedly exceeded 50% in 2025, but this reflects the domestic Chinese market; the competitive dynamics differ significantly in high-reliability applications for industrial equipment, rail, and grid infrastructure in Europe and Japan.
Hidden Costs — Thinking in Terms of TCO
Even with a 30–50% difference in device unit price, that differential does not translate directly into procurement cost reduction. Here is why.
Qualification costs: Automotive-grade IGBTs require reliability qualification under AEC-Q101, typically involving 18–36 months of sample evaluation, environmental testing, and mass-production process audits. Many automotive-grade products from emerging Chinese manufacturers have limited qualification track records, meaning the adopting party must either absorb the evaluation workload or accept the risks of using unqualified parts.
Design change costs: Switching suppliers entails re-tuning protection circuits (revisiting DESAT thresholds and blanking times), EMC re-evaluation, and system conformance testing. Where existing designs are optimized for the switching characteristics of a specific manufacturer, this effort can reach a scale that is impossible to ignore.
Warranty and field risk: The quality of field failure support, the speed of failure analysis responses, and traceability assurance still differ significantly between established European and Japanese manufacturers and emerging Chinese players. In industrial equipment and critical infrastructure applications, this gap manifests as a quantifiable cost of system downtime risk.
Device Unit Price
Reported to be 30–50% lower than European and Japanese equivalents. In practice, the actual difference varies by voltage class, grade, and lot size.
Qualification Costs
Automotive applications require AEC-Q101 qualification involving 18–36 months of evaluation. For unqualified part numbers, the adopting party bears the full evaluation cost.
Design Change Costs
Protection circuit re-tuning, EMC re-evaluation, and system conformance testing. The more closely an existing design is optimized for European or Japanese device characteristics, the higher the switching cost.
Supply Risk Premium
If margin compression from aggressive pricing persists, manufacturers' capacity to invest in future supply capability and quality maintenance may deteriorate.
Application-Specific Sourcing Is the Pragmatic Answer
A reasonable distinction can be drawn between applications where Chinese IGBTs represent a rational choice and those where they do not.
For industrial inverters at China-based facilities, and for consumer or commercial applications with relatively stable specifications, Chinese manufacturers' support networks and price advantages may be exploitable. By contrast, in applications requiring product safety certification in Europe or Japan (TÜV, UL, etc.) or long-term warranties — and in high-reliability-critical applications such as rail, medical, and grid infrastructure — the advantages of European and Japanese manufacturers with established qualification records and technical support remain effective.
The appropriate action for procurement teams is not a binary choice of "switch to Chinese or not," but rather to calculate full TCO on an application-by-application basis and optimize the supplier portfolio accordingly. The fact that Infineon continues to expand share even under pricing pressure is itself market evidence that price alone is not the determining factor in procurement decisions.