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SITCSection 7
U.S. imports of parts of diodes, transistors & similar semiconductor devices (SITC 77688) totaled $98.2M in April 2026, traded with 41 countries.
Importers of Parts of Diodes, Transistors & Similar Semiconductor Devices paid $6.2M in duties in April 2026 — an effective duty rate of 22% on $28.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts of Diodes, Transistors & Similar Semiconductor Devices imports of $98.2M in April 2026 ran 28% above the year-to-date monthly average of $76.9M.
Last updated: April 2026 dataCovering components and sub-elements used in the manufacture or repair of discrete semiconductors — including photosensitive devices, light-emitting diodes, and mounted piezoelectric crystals — this heading is a key procurement category for semiconductor packaging houses and LED module manufacturers. The inclusion of LED-related parts alongside traditional diode and transistor components reflects the convergence of optoelectronics with conventional semiconductor manufacturing. Section 301 tariffs affect parts sourced from China, which is a dominant origin for LED packaging materials and lead frames, making origin tracking and first-sale valuation strategies particularly relevant for cost management.
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Lead frames, bonding wires, and similar sub-components used specifically in the assembly of diodes, transistors, and LEDs generally fall within parts of semiconductor devices. However, generic metal stampings or wire not dedicated to semiconductor use may classify under base-metal or wire headings. A product-specific ruling from CBP is the most reliable way to confirm classification for novel packaging materials.
Because LED packaging components — phosphors, lead frames, lenses, and substrates — share this heading with parts for conventional discrete semiconductors, importers benefit from consolidating supplier audits and compliance reviews. Given that China is a major source of LED packaging materials subject to Section 301 tariffs, some buyers have shifted procurement to suppliers in Southeast Asia to manage landed cost.
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Monthly import values over time