# United States tariff line 8504.90.20.00: Printed circuit assemblies > In the United States tariff, line 8504.90.20.00 covers parts, of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62, printed circuit assemblies. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8504.90 in heading 85.04 (chapter 85). Source: https://border.bot/countries/united-states/hs-codes/8504902000 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 85](https://border.bot/countries/united-states/hs-codes/85) / [8504.90](https://border.bot/countries/united-states/hs-codes/850490) / [8504.90.20.00](https://border.bot/countries/united-states/hs-codes/8504902000) ## Key facts - Tariff line: 8504.90.20.00 - Covers: Parts, of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62, printed circuit assemblies - Duty (MFN): Free - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [8504.90](https://border.bot/hs-codes/850490) ## What this line covers In the United States tariff, line 8504.90.20.00 covers parts, of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62, printed circuit assemblies. Its legal text is “Printed circuit assemblies”, read under “Parts” and “Of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62”. ## How it is structured It falls under HS subheading 8504.90 in heading 85.04 (chapter 85). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff. - Chapter 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles - Heading 85.04: Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof - Subheading 8504.90: Parts - Within the subheading: Of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62 - Line 8504.90.20.00: Printed circuit assemblies ## Duty Goods under this line enter free of general (MFN) duty. ## In other countries No other national tariff on border.bot has live lines under 8504.90 yet. - [The Harmonized System text for 8504.90](https://border.bot/hs-codes/850490) ## Other lines under 8504.90 - [8504.90.41.00](https://border.bot/countries/united-states/hs-codes/8504904100) Other - [8504.90.65.00](https://border.bot/countries/united-states/hs-codes/8504906500) Of the goods of subheading 8504.40 or 8504.50 for telecommunication apparatus - [8504.90.75.00](https://border.bot/countries/united-states/hs-codes/8504907500) Other - [8504.90.96.10](https://border.bot/countries/united-states/hs-codes/8504909610) For transformers - [8504.90.96.30](https://border.bot/countries/united-states/hs-codes/8504909630) Other - [8504.90.96.34](https://border.bot/countries/united-states/hs-codes/8504909634) Laminations for incorporation into stacked cores - [8504.90.96.38](https://border.bot/countries/united-states/hs-codes/8504909638) Stacked cores for incorporation into transformers - [8504.90.96.42](https://border.bot/countries/united-states/hs-codes/8504909642) Wound cores for incorporation into transformers - [8504.90.96.46](https://border.bot/countries/united-states/hs-codes/8504909646) Other - [8504.90.96.50](https://border.bot/countries/united-states/hs-codes/8504909650) Of static converters - [8504.90.96.90](https://border.bot/countries/united-states/hs-codes/8504909690) Other - Previous line: [8504.50.80.00](https://border.bot/countries/united-states/hs-codes/8504508000) Other - Next line: [8504.90.41.00](https://border.bot/countries/united-states/hs-codes/8504904100) Other ## Frequently asked questions ### What does tariff line 8504.90.20.00 cover in the United States tariff? In the United States tariff, line 8504.90.20.00 covers parts, of power supplies for automatic data processing machines or units thereof of heading 8471; of power supplies for goods of subheading 8443.31 or 8443.32; of power supplies for monitors of subheading 8528.42 or 8528.52 or projectors of subheading 8528.62, printed circuit assemblies. ### What is the general (MFN) duty on 8504.90.20.00 in the United States? Goods under this line enter free of general (MFN) duty. ## Sources and updates The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. This page was last updated on 9 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Official source files: - https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false Machine-readable: https://border.bot/countries/united-states/hs-codes/8504902000.json