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HSChapter 85
U.S. imports of high-power transistors (non-photosensitive, 1 watt or more) (HS 854129) totaled $119.3M in July 2026, traded with 47 countries.
Importers of High-Power Transistors (Non-Photosensitive, 1 Watt or More) paid $2.6M in duties in July 2026 — an effective duty rate of 42% on $6.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. High-Power Transistors (Non-Photosensitive, 1 Watt or More) imports of $119.3M in July 2026 ran 15% above the year-to-date monthly average of $103.7M.
Last updated: July 2026 dataPower transistors rated at 1 watt or above are segmented across multiple frequency bands — below 30 MHz, 30 MHz to 30,000 MHz, and above 30,000 MHz — reflecting their use in power amplifiers, motor drives, RF base stations, and radar systems. Japan and Austria are the leading US suppliers, a pairing that underscores the heading's concentration in precision power and RF semiconductor manufacturing rather than commodity consumer electronics. The seven 10-digit lines under this heading make frequency documentation from manufacturer datasheets essential for accurate entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7.6K shipments/mo
Classification should be based on the transistor's primary rated or designed operating frequency range as stated in the manufacturer's datasheet. If a device is rated for a broad range spanning multiple classification boundaries, CBP guidance and binding ruling requests can provide certainty. Consulting a licensed customs broker before entry is advisable for multi-band RF power devices.
Line 8541290040 covers unfinished transistor chips at the die or wafer stage for devices rated at or above 1 watt, regardless of frequency. All other lines under 854129 cover completed, packaged transistors differentiated by frequency band. The stage of manufacture — whether the product has been diced, packaged, and tested — determines which line applies.
Subheading 5 of 12 in heading 8541
Subheading 854129 · $119.3M of $1.4B
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ImportsExports
Imports
$119.3MYoY · Pro
Exports
$130.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8541290055 | Transistors Exc Photosensitive,Gt 1w,Freq Lt 30mhz | $74.0M | 2.57% | 6.31% | $1.9M |
| 8541290040 | Transistor Chips Other Than Photosensitive Gt= 1 W | $21.5M | 0.39% | 0.92% | $83K |
| 8541290065 | Trnsstrs Exc Phtosnstv,Gt 1w, Gt 30mhz Lt 30000mhz | $11.9M | 2.97% | 6.82% | $353K |
| 8541290085 | Transistrs Exc Photosnstv,Gt 1w,Freq Gt 30000mhz | $11.9M | 2.23% | 4.76% | $264K |
| 8541290075 | Transistors Exc Photosensitive,Gt 1w,Freq Gt 30mhz | $0 | -- | -- | -- |
| 8541290095 | Transistors Exc Photosensitive,Gt 1w,Freq Lt 30mhz | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8541290040 | Transistor Chips Other Than Photosensitive Gt= 1 W | $68.7M |
| 8541290080 | Transistors Other Than Photosensitive Gt=1 W | $62.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
62.9% enters free of duty; the effective duty rate is 2.18%.