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HTSUS, United States

8540.89.00.40

Diodes, triodes and tetrodes

Classification path

  1. Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes); parts thereof
  2. Other tubes
  3. Other
  4. Diodes, triodes and tetrodes

Rates of duty

General (MFN)
3.7%
Column 2Cuba, North Korea, Russia, Belarus
35%
Unit of quantity
No.

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, B, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 8540

About heading 8540

Thermionic, cold cathode or photocathode tubes (for example, vacuum or vapor or gas filled tubes, mercury arc rectifying tubes, cathode-ray tubes, television camera tubes); parts thereof

Heading 8540 covers thermionic, cold cathode and photocathode tubes, including cathode-ray tubes, television camera tubes, microwave tubes and other electron tubes, plus their parts. The heading splits first by tube family: cathode-ray television picture tubes (8540.11 and 8540.12), camera and photocathode tubes (8540.20), data/graphic display tubes (8540.40), other cathode-ray tubes (8540.60), microwave tubes (8540.71 and 8540.79), other tubes (8540.81 and 8540.89), and parts (8540.91 and 8540.99). Picture tube lines turn on color versus monochrome, high definition versus non-high definition, and video display diagonal size.

Full guide to heading 8540

Products in this heading

  • Color cathode-ray television picture tubes with a 63 cm and larger diagonal
  • Monochrome cathode-ray television picture tubes
  • Television camera tubes
  • Image intensifier tubes
  • Magnetrons for use as parts of microwave ovens
  • Klystrons and traveling wave tubes
  • Receiver or amplifier tubes
  • Deflection coils and front panel assemblies for cathode-ray tubes

Frequently asked questions

What is the HTS code for a color cathode-ray television picture tube with a video display diagonal exceeding 63 cm?

Use 8540.11.10.85 for non-high definition color tubes with a diagonal exceeding 63 cm. The general (MFN) rate is 15%.

What is the duty on magnetrons modified for use as parts of microwave ovens?

Magnetrons modified for microwave oven use are classified under 8540.71.20.00. The general (MFN) rate is Free.

How do I classify deflection coils for cathode-ray tubes?

Deflection coils are parts of cathode-ray tubes and are classified under 8540.91.20.00. The general (MFN) rate is Free.

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 8540.89.00.40: Diodes, triodes and tetrodes, 3.7% duty | HTSBase