Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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Thermionic and other cathode tubes, not elsewhere specified

In short

  • The US imported $32.0M of this product over the 12 months to August 2026, down 12% on the year before.
  • United Kingdom is the largest supplier, with 59.2% of US imports; China is next, with 16.9%.
  • China is the cheapest main supplier before and after freight and duty, landing at $831.21 each.
  • Duty paid averaged 20.0% of the value of imports in August 2026, up 8.2 points on a year earlier.
  • United Kingdom is gaining share: 54.4% over the last 12 months, up from 52.7%.
  • US exports were $93.8M over the last 12 months; the largest market is Singapore, with 16.3%.

US imports, Aug 2026

$2.3M

↓ −42% vs Aug 2025

Last 12 months

$32.0M

↓ −12% vs the 12 months before

Average duty paid

20.0%

↑ +8.2 pts vs Aug 2025

Top supplier

United Kingdom

59.2% of US imports

US imports by month

The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugChina ↓
Show the numbers
MonthUS imports
August 2025$4.0M
September 2025$3.0M
October 2025$2.7M
November 2025$3.7M
December 2025$3.0M
January 2026$2.1M
February 2026$1.3M
March 2026$2.4M
April 2026$1.8M
May 2026$1.9M
June 2026$3.9M
July 2026$3.8M
August 2026$2.3M

What changed

  • US imports were $2.3M in August 2026, down 40% from July 2026 and down 42% from August 2025.
  • Over the 12 months to August 2026 they totalled $32.0M, down 12% on the 12 months before.
  • Biggest moves in market share since July 2026: United Kingdom up from 27.2% to 59.2%, Germany down from 35.3% to 6.1%.
  • Average price from Russia rose 68% since July 2026, to $14.81 each.
  • Duty paid on imports from Russia rose from 35.0% to 47.5% of their value since July 2026.
  • Duty paid on imports from Germany rose from 0.6% to 10.0% of their value since July 2026.

US trade by year

US imports were $32.0M in the 12 months to Aug 2026, up 16% on the 12 months to Aug 2017. US exports were $93.8M, up 56%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, so part of a change across the dashed line can be the revision. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

2017201820192020202120222023202420252026HS 2022China ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$27.6M
12 months to Aug 2018$29.1M
12 months to Aug 2019$34.8M
12 months to Aug 2020$29.0M
12 months to Aug 2021$27.2M
12 months to Aug 2022$34.2M
12 months to Aug 2023$32.5M
12 months to Aug 2024$30.9M
12 months to Aug 2025$36.6M
12 months to Aug 2026$32.0M
  • United Kingdom
  • Germany
  • China
  • France
  • All countries
Share of US imports
Show the numbers
PeriodUnited KingdomGermanyChinaFrance
12 months to Aug 201733.7%4.4%19.8%12.4%
12 months to Aug 201830.4%9.7%16.1%19.7%
12 months to Aug 201922.6%25.3%15.4%13.9%
12 months to Aug 202036.0%9.8%14.2%16.1%
12 months to Aug 202125.1%6.8%18.6%23.4%
12 months to Aug 202226.6%13.1%19.3%16.7%
12 months to Aug 202328.2%14.4%13.8%18.0%
12 months to Aug 202432.3%26.2%11.1%12.6%
12 months to Aug 202552.7%11.9%11.3%8.1%
12 months to Aug 202654.4%13.2%10.4%7.3%
Duty paid, % of value
Show the numbers
PeriodUnited KingdomGermanyChinaFranceAll countries
12 months to Aug 20173.7%3.7%3.7%3.7%3.7%
12 months to Aug 20183.7%3.7%7.9%3.7%4.4%
12 months to Aug 20193.7%3.7%28.6%3.7%7.5%
12 months to Aug 20203.7%3.7%28.6%3.7%7.2%
12 months to Aug 20213.7%3.7%28.6%3.7%8.3%
12 months to Aug 20223.7%3.7%28.5%3.7%9.5%
12 months to Aug 20233.7%3.7%28.6%3.7%9.5%
12 months to Aug 20243.6%3.7%28.7%3.7%8.1%
12 months to Aug 20257.9%4.5%46.8%4.5%12.5%
12 months to Aug 202613.5%9.6%46.5%14.3%16.2%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$32.0M−12%16.2%+3.7 pts$93.8M−2.2%
12 months to Aug 2025$36.6M+18%12.5%+4.4 pts$95.8M+26%
12 months to Aug 2024$30.9M−4.9%8.1%−1.4 pts$75.8M−5.2%
12 months to Aug 2023$32.5M−4.8%9.5%0.0 pts$80.0M+39%
12 months to Aug 2022HS 2022 revision$34.2M+26%9.5%+1.2 pts$57.5M−14%
12 months to Aug 2021$27.2M−6.4%8.3%+1.1 pts$67.1M+16%
12 months to Aug 2020$29.0M−17%7.2%−0.3 pts$57.9M+7.1%
12 months to Aug 2019$34.8M+19%7.5%+3.1 pts$54.1M+7.2%
12 months to Aug 2018$29.1M+5.7%4.4%+0.7 pts$50.4M−16%
12 months to Aug 2017$27.6M3.7%$60.2M

Who supplies the US

August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.

CountryUS importsShareAverage priceDuty paidLast 13 months
United Kingdom$1.4M59.2%+9.0 pts$2,166 each+45%13.6%−0.1 pts
China$391K16.9%+12.6 pts$698.70 each−65%41.2%−17.5 pts
Russia$187K8.1%−29.8 pts$14.81 each+5.7%47.5%+47.5 pts
Germany$142K6.1%+4.9 pts$74.43 each+94%10.0%−4.0 pts
Japan$89K3.9%−0.4 pts$538.05 each−77%12.5%−6.1 pts
Czech Republic$58K2.5%+2.5 pts$58,395 each+13528%10.0%+10.0 pts
France$21K0.9%+0.2 pts$5,363 each−31%10.0%−4.7 pts
Malaysia$20K0.9%new$267.85 each13.7%
Other countries (4)$37K1.6%+0.5 pts$33.04 each+41%10.9%−4.8 pts
All countries$2.3M100.0%$133.60 each+268%20.0%+8.2 pts

The 3 largest suppliers had 78.1% of US imports over the last 12 months.

Landed cost by origin

What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.

  • Price
  • Freight and insurance
  • Duty
CountryPriceFreight and insuranceDutyLanded costMake-up
China$584.35 each$13.46 each2.3% of price$233.40 each39.9% of price$831.21 each+459%
Japan$829.64 each$7.93 each1.0% of price$110.77 each13.4% of price$948.34 each−49%
Germany$970.46 each$4.01 each0.4% of price$76.18 each7.8% of price$1,051 each+262%
United Kingdom$1,461 each$10.19 each0.7% of price$197.73 each13.5% of price$1,669 each−22%
France$6,424 each$115.78 each1.8% of price$873.75 each13.6% of price$7,413 each−17%
All countries$339.20 each$3.11 each0.9% of price$48.66 each14.3% of price$390.97 each+310%

Landed at a US port, China was cheapest, at $831.21 each: 12.4% below Japan.

Landed cost from China rose 459% on a year earlier, to $831.21 each, mostly on price: $92.49 each then, $584.35 each now.

How the market is shifting

United Kingdom gained the most share: 54.4% of US imports over the last 12 months, up from 52.7% in the 12 months before. Russia lost the most: 6.5%, down from 7.6%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.

  • United Kingdom
  • Germany
  • China
  • France
  • All countries
Share of US imports
Show the numbers
MonthUnited KingdomGermanyChinaFrance
September 202471.4%0.8%12.2%3.1%
October 202472.3%2.9%9.7%9.5%
November 202457.1%2.2%22.4%6.8%
December 202465.7%2.9%13.3%4.1%
January 202546.8%1.0%27.1%9.2%
February 202572.1%5.4%3.5%6.8%
March 202543.3%13.6%7.1%15.4%
April 202531.0%4.6%8.7%41.9%
May 202566.8%2.0%10.6%0.2%
June 202564.9%5.0%17.7%1.2%
July 202533.4%55.2%6.2%1.2%
August 202550.2%1.2%4.3%0.8%
September 202571.7%11.2%7.5%0.7%
October 202568.2%5.5%10.3%3.6%
November 202540.7%1.7%8.2%0.8%
December 202575.1%2.9%10.4%7.3%
January 202636.0%4.7%19.7%30.1%
February 202674.7%6.6%5.9%5.9%
March 202669.4%6.1%13.1%3.0%
April 202655.0%2.8%16.0%8.7%
May 202651.7%5.0%15.5%3.1%
June 202647.7%41.5%5.9%1.5%
July 202627.2%35.3%5.2%23.3%
August 202659.2%6.1%16.9%0.9%
Duty paid, % of value
Show the numbers
MonthUnited KingdomGermanyChinaFranceAll countries
September 20243.6%3.7%28.7%3.7%8.3%
October 20243.5%3.7%28.7%3.7%5.7%
November 20243.7%3.7%28.6%3.7%10.7%
December 20243.7%3.7%28.7%3.7%6.8%
January 20253.7%3.7%28.7%3.7%11.9%
February 20253.7%3.7%37.2%3.7%5.9%
March 20253.7%3.7%45.0%3.7%10.0%
April 202510.3%13.2%76.6%4.4%17.6%
May 202513.7%13.7%102.2%13.7%22.4%
June 202513.7%13.7%58.7%13.7%23.3%
July 202513.7%3.7%58.7%13.7%11.6%
August 202513.7%14.0%58.7%14.7%11.9%
September 202513.7%14.2%58.7%15.0%15.2%
October 202513.7%15.0%58.7%15.0%20.6%
November 202513.7%15.0%54.3%15.0%11.5%
December 202512.6%15.0%50.4%15.0%17.9%
January 202613.7%15.0%48.7%15.0%21.5%
February 202613.7%14.3%48.7%14.9%16.0%
March 202613.7%13.7%38.7%13.7%16.8%
April 202613.7%13.7%38.5%13.7%18.2%
May 202613.7%13.7%38.7%13.7%18.1%
June 202613.4%13.7%38.7%13.7%14.9%
July 202613.7%0.6%39.3%13.7%10.4%
August 202613.6%10.0%41.2%10.0%20.0%

Tariff actions touching this product

When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.

  1. January 2026 · Duty paid: China 56.5% → 38.7%.
  2. March–August 2025 · Duty paid: United Kingdom 3.7% → 13.7%, Germany 3.7% → 13.7%, China 28.7% → 58.7%, all countries 8.5% → 13.7%.
  3. August 2018 · Duty paid: China 3.7% → 28.6%.

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. New Orleans, LA$15.0M · 46.8%
  2. Newark, NJ$3.9M · 12.0%
  3. San Francisco International Airport, CA$2.4M · 7.6%
  4. Cleveland, OH$1.7M · 5.2%
  5. Jfk International Airport, NY$1.6M · 5.0%

Where US exports go

US exports were $8.3M in August 2026, down 32% from August 2025, and $93.8M over the last 12 months, down 2.2% on the 12 months before. Fastest-growing market with 3% or more of US exports: Israel, up 4589%.

MarketLast 12 monthsSharevs 12 months before
Singapore$15.2M16.3%+103%
Japan$11.2M11.9%−37%
Italy$7.2M7.7%+330%
Israel$7.0M7.5%+4589%
China$6.5M6.9%−44%
Belgium$4.6M4.9%+4.3%
Bahrain$4.1M4.3%−48%
Spain$3.8M4.1%−4.0%
Other countries (88)$34.0M36.3%−16%
All countries$93.8M100.0%−2.2%

Markets abroad

Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 111 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
Iraq$81.0Min 2024+12372%$108K0.1%
China$45.3Min 2025−1.0%$4.5MUS records $10.7M9.9%
Philippines$31.3Min 2025−5.3%$19K0.1%
Netherlands$27.7Min 2025+17%$602K2.2%
Japan$15.8Min 2025−4.3%$8.4MUS records $17.4M53.4%
Singapore$12.6Min 2025−6.1%$2.0MUS records $9.6M15.7%
Korea, South$10.7Min 2025−1.6%$4.4MUS records $715K41.2%
Greece$9.2Min 2025−38%$9.1MUS records $1.3M99.0%

The biggest market outside the US is Iraq, which imported $81.0M of this product in 2024, 0.1% of that from the US.

Of these, imports into the Netherlands grew fastest: up 17% from 2024 to 2025.

Other products under heading 8540: thermionic, cold cathode or photocathode tubes (vacuum, vapor or gas filled tubes, cathode-ray tubes, television camera tubes etc.); parts thereof. US trade over the 12 months to August 2026.

About these figures
  • Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
  • US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
  • Average price is customs value divided by quantity (number of items), across all of the product's 10-digit lines.
  • Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
  • Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
  • Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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