Infineon Technologies is headquartered in Munich, Germany, but its primary assembly and test operations are in Malaysia (Malacca and Kulim). MOSFETs, IGBTs, and power modules assembled in Malaysia face the 10% Section 122 surcharge. Infineon is a key supplier for automotive, industrial, and power applications.
Infineon is headquartered in Germany, but most components are manufactured in Malaysia, Philippines, China, Germany. For US customs purposes, the COO is where the component is manufactured — not where the company is based. Declaring Germany as COO when parts ship from Malaysia is a customs violation.
Power semiconductors, MOSFETs, IGBTs — assembly & test
Assembly and test
Assembly and test
Wafer fabrication
| Country | Sec 122 | Sec 301 | Total |
|---|---|---|---|
| Malaysia | 10% | — | 10% |
| Philippines | 10% | — | 10% |
| China | 10% | 50% | 60% |
| Germany | 10% | — | 10% |
* Section 301 rates shown for electronics HTS chapters (8541–8542). Rates vary by product.
| HTS Code | Description |
|---|---|
| 8541.29.0000 | Power MOSFETs (IRFZ, IRL series) |
| 8541.40.9500 | IGBTs and power modules |
| 8542.31.0000 | XMC/AURIX microcontrollers |
| 8542.39.0000 | Motor drivers, gate drivers |
Infineon Technologies is structured as a classic European IDM with front-end wafer fabrication in Germany (Dresden and Regensburg) and Austria (Villach), supplemented by external foundry at TSMC and Global Foundries for advanced logic. Back-end assembly and test — the operations that determine US customs COO — are concentrated in Malaysia, particularly the Malacca and Kulim (Kedah) sites. The Kulim HiTech Park facility is one of Southeast Asia's largest power semiconductor assembly operations, handling MOSFET, IGBT, and power module packaging. The Philippines (Laguna) and China (Wuxi) sites handle overflow and some automotive IC assembly. For the majority of Infineon catalog items imported to the US, Malaysia is the declared COO.
Infineon's power semiconductor line covers HTS 8541.29.0000 (power MOSFETs — IRF, IRL, BSZ, IPD families), 8541.40.9500 (IGBTs and IGBT modules), and 8542.39.0000 (gate drivers, motor control ICs, digital isolators). Automotive microcontrollers (AURIX TC3xx, TC4xx) and XMC ARM-based MCUs classify under 8542.31.0000. Malaysia-origin Infineon parts: 10% effective rate (Section 122 only). China (Wuxi)-origin parts: approximately 60% effective rate (10% Section 122 + 50% Section 301). Philippines-origin: 10%. Germany-origin wafer-level shipped dies: 10%. The CoolMOS and OptiMOS MOSFET families, widely used in power supplies and EV onboard chargers, are predominantly Malaysia COO.
Infineon holds a leading position in automotive semiconductors, supplying AURIX microcontrollers for engine control, transmission, and ADAS applications, as well as discrete power devices for 48V mild hybrid and full EV powertrains. AURIX TC3xx and TC4xx controllers are fabricated in Dresden (40 nm FinFET) and assembled in Malaysia and the Philippines. AECQ-100 qualification runs on these back-end sites. Automotive-grade Infineon parts imported to the US face the 10% Section 122 surcharge, which applies universally regardless of COO for non-China origins. Automotive tier-1 buyers should note that AURIX parts have 52+ week lead times through authorized distribution, with spot market premiums frequently applied.
Infineon's CoolSiC MOSFET and Schottky diode lines represent the company's silicon carbide portfolio, critical for EV inverters and solar/wind power conversion. CoolSiC production uses Infineon's proprietary trench SiC technology, with wafer fabrication in Villach (Austria) and assembly in Malaysia. For US importers, Austria-COO CoolSiC devices face 10% (Section 122 only, no Section 301). The GaN-based CoolGaN products for high-frequency power conversion are also assembled in Malaysia. Buyers designing SiC-based power stages for US-manufactured products should verify lot COO explicitly, as small allocations may route through the Wuxi (China) site, incurring the higher 60% duty burden.
A common compliance error with Infineon imports is declaring the country of origin as Germany (headquarters) rather than Malaysia (manufacturing). This constitutes a false statement to CBP and can trigger penalties under 19 U.S.C. § 1592. Infineon provides country of origin documentation with commercial invoices; buyers should ensure their customs brokers incorporate this data into entry filings rather than defaulting to the supplier's registered country. For large-volume MOSFET and IGBT imports, the MPF (Merchandise Processing Fee) minimum of $32.71 per entry applies, making consolidated shipments more cost-efficient from a duty overhead perspective.
Enter any Infineon part number to get the COO, HTS code, and full duty calculation including MPF and HMF.
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