U.S. imports of Printed Circuit Assemblies (Electronic Assemblies) (NAICS 334418) totaled $17.2B in August 2026, imported from 98 countries.
Importers of Printed Circuit Assemblies (Electronic Assemblies) paid $49.0M in duties in August 2026, an average duty rate of 0.30% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Printed Circuit Assemblies (Electronic Assemblies) imports of $17.2B in August 2026 ran 33% above the year-to-date monthly average of $13.0B.
Last updated: August 2026 dataPrinted circuit assemblies (PCAs) — bare boards populated with active and passive components through surface-mount or through-hole processes — are classified under NAICS 334418 and represent a higher-value, more complex import category than bare PCBs. Section 301 tariffs on Chinese-origin assemblies have driven significant supply-chain restructuring toward contract manufacturers in Mexico, Vietnam, and Malaysia. The functional identity of the assembly (e.g., a motor control board vs. a telecommunications line card) governs HTS classification, and assemblies designed for specific end-use applications may be subject to additional regulatory review depending on the finished product they are destined for.
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30.6K import shipments a month
When a PCA performs a single identifiable function (e.g., power conversion, signal processing), it is classified by that function under the relevant HTS heading for functional units. When the assembly's function cannot be separated from the finished machine it is designed for, it may be classified as a part of that machine under GRI 2(a) or Note 2 to Section XVI. The intended end-use and the assembly's ability to perform its function independently are the key classification factors.
CBP applies the substantial transformation test: if the assembly process in Vietnam — soldering components to a board, testing, and conformal coating — constitutes a substantial transformation of the imported components into a new and different article, the PCA's country of origin is Vietnam, not China. However, CBP has scrutinized assembly-only operations that add minimal value, so the complexity of the assembly process and the degree of value addition in Vietnam are critical factors.
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National industry 1 of 6 in naics industry 33441
National industry 334418 · $17.2B of $26.7B
Imports · August 2026
origin
Vietnam and Taiwan together supply 58% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3344 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$17.2BYoY · free account
Exports
$184.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $139.4B of Printed Circuit Assemblies (Electronic Assemblies) and exported $2.0B.
Through August 2026. Source: U.S. Census Bureau.