Heading 8504 · Electrical transformers, static converters (for example, rectifiers) and…

8504.90

Electrical transformers, static converters (for example,… — Parts:

Calculate duties for this code

Official notices

Actions of the President, the USTR or U.S. Customs and Border Protection (CBP) that name this code.

Mentioned in Chapter 99

The parts of Chapter 99, in the 2026 HTS Revision 22, that list HTS 8504.90, a broader code that includes it, or a narrower code within it.

U.S. noteExcerptHeadings that refer to it
U.S. note 16(c)(ix)(c) Headings 9903.82.02–9903.82.26 apply to the full customs value of articles classifiable in the provisions of the HTSUS enumerated in the following lists. For articles classified in the listed provisions that are not in chapters 72, 73,…9903.82.01, 9903.82.03, 9903.82.07, 9903.82.08, 9903.82.12
U.S. note 16(c)(vi)(c) Headings 9903.82.02–9903.82.26 apply to the full customs value of articles classifiable in the provisions of the HTSUS enumerated in the following lists. For articles classified in the listed provisions that are not in chapters 72, 73,…9903.82.01, 9903.82.03, 9903.82.05, 9903.82.09
U.S. note 16(c)(vii)(vii) Derivative steel articles: [Compiler’s note: List may begin on a subsequent page; read numbers from left to right.]9903.82.01, 9903.82.03, 9903.82.05, 9903.82.09, 9903.82.16
U.S. note 19(k)(k) The rates of duty in heading 9903.85.08 apply to all entries of derivative aluminum products classifiable in the following HTSUS provisions, unless the derivative aluminum product was processed in another country from aluminum articles…9903.85.68
U.S. note 19(s)(s) The rates of duty set forth in heading 9903.85.15 apply to all entries of derivative aluminum products of the United Kingdom classifiable in the following provisions of the HTSUS, unless the derivative aluminum product was processed in…—
U.S. note 20(b)(b) Heading 9903.88.01 applies to all products of China that are classified in the following 8-digit subheadings, except products of China granted an exclusion by the U.S. Trade Representative and provided for in: (1) heading 9903.88.05…9903.88.01
U.S. note 20(f)(f) Heading 9903.88.03 applies to all products of China that are classified in the following 8-digit subheadings, except products of China granted an exclusion by the U.S. Trade Representative and provided for in (1) heading 9903.88.13 and…9903.88.03, 9903.88.09
U.S. note 20(j)(17)(17) Inductor baseplates of aluminum, each with a length measuring 149.20 mm or more but not over 275 mm, with a width measuring 119.40 mm or more but not over 232 mm and with a depth of 10.50 mm or more but not over 19 mm, with a weight…9903.88.07
U.S. note 20(kkk)(30)(30) Dual layer printed circuit board assemblies, each valued over $30 but not over $35 (described in statistical reporting number9903.88.58
U.S. note 20(m)(56)(56) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(57)(57) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(58)(58) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(m)(59)(59) Printed circuit assemblies of the goods of subheading9903.88.10
U.S. note 20(n)(75)(75) Static converter covers, bases and housings (described in statistical reporting number9903.88.11
U.S. note 20(q)(197)(197) Printed circuit boards, each measuring no more than 2.3 cm by 13.1 cm, presented with two black plastic pin connectors on opposite ends and/or sides, designed for use in transformers used to provide power to telecommunications…9903.88.14
U.S. note 20(q)(198)(198) Dual layer printed circuit board assemblies, each valued over $30 but not over $35 (described in statistical reporting number9903.88.14
U.S. note 20(q)(199)(199) Coils for cast epoxy resin transformers, each of the foregoing valued over $6,500 but not over $7,000 (described in statistical reporting number9903.88.14
U.S. note 20(q)(200)(200) Conductors of aluminum for electric transformers, static converters and inductors (described in statistical reporting number9903.88.14
U.S. note 20(q)(201)(201) Heat sinks of aluminum for inductors (described in statistical reporting number9903.88.14
U.S. note 20(q)(202)(202) Inductor parts, of plastics (described in statistical reporting number9903.88.14
U.S. note 20(q)(203)(203) Toroids of silicon steel (described in statistical reporting number9903.88.14
U.S. note 20(ttt)(61)(61) Dual layer printed circuit board assemblies, each valued over $30 but not over $35 (described in statistical reporting number9903.88.67
U.S. note 20(vvv)(30)(30) Dual layer printed circuit board assemblies, each valued over $30 but not over $35 (described in statistical reporting number9903.88.69

Being listed is not owing a duty. A note may list goods that a measure leaves out; whether a heading applies depends on the origin, the date and the product; and the measures on all the goods of a country list no code at all. The calculator says what applies.

In the tariff

  1. 8504Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof
  2. 8504.90Parts
  3. 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
  4. 8504.90.20.00Printed circuit assembliesFree
  5. 8504.90.41.00OtherFree
  6. Other
  7. Printed circuit assemblies
  8. 8504.90.65.00Of the goods of subheading 8504.40 or 8504.50 for telecommunication apparatusFree
  9. 8504.90.75.00OtherFree
  10. 8504.90.96OtherFree
  11. Ferrites
  12. 8504.90.96.10For transformers
  13. 8504.90.96.30Other
  14. Other parts
  15. Of transformers
  16. 8504.90.96.34Laminations for incorporation into stacked cores
  17. 8504.90.96.38Stacked cores for incorporation into transformers
  18. 8504.90.96.42Wound cores for incorporation into transformers
  19. 8504.90.96.46Other
  20. 8504.90.96.50Of static converters
  21. 8504.90.96.90Other