US import duties on electronics & semiconductors · 2026
Italy is the headquarters of STMicroelectronics, one of the world's largest chipmakers, with major wafer fabs in Catania (Sicily) and Agrate Brianza (near Milan). ST's Italian fabs produce STM32 microcontrollers, power management ICs, MEMS sensors, and SiC power devices. Italian-origin components — particularly STM32F/G/H/L/U series — face only the 10% Section 122 surcharge. ST's SiC MOSFETs from Catania are critical for EV inverters and are among the most-imported Italian electronics.
| HTS Code | Description | Duty Rate |
|---|---|---|
| 8542.31.0025 | STM32 microcontrollers | 10% |
| 8542.39.0000 | STM mixed-signal/power management ICs | 10% |
| 9031.80.8085 | MEMS sensors (accelerometers, gyroscopes) | 10% |
| 8541.29.0015 | SiC power transistors (SiC MOSFETs) | 10% |
| 8541.40.2000 | STM optical proximity sensors | 10% |
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