MACOM Technology Solutions manufactures RF/microwave and optical semiconductors. US-fabricated products (Lowell, MA) face 0% additional duty. UK-origin products (Belfast): 10% Section 122. Taiwan-origin products: 10% Section 122. No Section 301 applies to any MACOM origin.
MACOM Technology Solutions is headquartered in United States, but most components are manufactured in United States, United Kingdom, Taiwan. For US customs purposes, the COO is where the component is manufactured — not where the company is based. Declaring United States as COO when parts ship from United States is a customs violation.
GaAs/GaN wafer fabrication
GaAs wafer fabrication
CMOS/SiGe fabrication
| Country | Sec 122 | Sec 301 | Total |
|---|---|---|---|
| United States | 10% | — | 10% |
| United Kingdom | 10% | — | 10% |
| Taiwan | 10% | — | 10% |
* Section 301 rates shown for electronics HTS chapters (8541–8542). Rates vary by product.
| HTS Code | Description |
|---|---|
| 8542.39.0000 | GaAs PAs, GaN RF transistors, SiGe BiCMOS ICs |
| 8542.31.0000 | RF/microwave signal processors |
MACOM Technology Solutions is headquartered in Lowell, Massachusetts, with its primary GaAs and GaN fab collocated there. US-fabricated MACOM products carry US COO and face zero tariff on import. The Belfast, Northern Ireland facility produces GaAs MMICs for defense and aerospace applications; these face 0% MFN + 10% Section 122 = 10% effective. TSMC Taiwan-fabricated MACOM SiGe and CMOS die: 10% Section 122. No Section 301 applies to any MACOM origin country. MACOM's GaN-on-Si technology (M/A-COM GaN) and its optical semiconductor line (MAOM, MALD series for coherent optics) serve 5G base station and data center markets.
Enter any MACOM Technology Solutions part number to get the COO, HTS code, and full duty calculation including MPF and HMF.
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