{
  "summary": "The United States tariff splits HS 8541.21 (transistors, other than photosensitive transistors: With a dissipation rate of less than 1 W) into 3 national lines: 8541.21.00.40 (unmounted chips, dice and wafers), 8541.21.00.75 (with an operating frequency not less than 100 MHz) and 8541.21.00.95 (other). Every United States line under 8541.21 is free of general (MFN) duty.",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "HS subheading",
      "value": "8541.21",
      "source": null,
      "url": "https://border.bot/hs-codes/854121"
    },
    {
      "label": "Duty (MFN)",
      "value": "Free",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "National lines",
      "value": "3",
      "source": null
    },
    {
      "label": "Tariff",
      "value": "United States",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false",
      "url": "https://border.bot/countries/united-states"
    },
    {
      "label": "Chapter",
      "value": "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",
      "source": null
    }
  ],
  "faq": [
    {
      "question": "How many national tariff lines does the United States tariff have under HS 8541.21?",
      "answer": "The United States tariff splits HS 8541.21 (transistors, other than photosensitive transistors: With a dissipation rate of less than 1 W) into 3 national lines: 8541.21.00.40 (unmounted chips, dice and wafers), 8541.21.00.75 (with an operating frequency not less than 100 MHz) and 8541.21.00.95 (other)."
    },
    {
      "question": "What is the duty on HS 8541.21 in the United States?",
      "answer": "Every United States line under 8541.21 is free of general (MFN) duty."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "United States lines under 8541.21",
      "text": [
        "The United States tariff splits HS 8541.21 (transistors, other than photosensitive transistors: With a dissipation rate of less than 1 W) into 3 national lines: 8541.21.00.40 (unmounted chips, dice and wafers), 8541.21.00.75 (with an operating frequency not less than 100 MHz) and 8541.21.00.95 (other).",
        "Every United States line under 8541.21 is free of general (MFN) duty."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 8541.21 yet."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "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."
      ]
    }
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      "code": "US",
      "name": "United States",
      "slug": "united-states"
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      "code": "US",
      "name": "United States",
      "slug": "united-states"
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    "borrowed": false,
    "localTaxes": [],
    "localDeminimis": [],
    "ratesLive": true,
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        "version": "2026HTSRev21",
        "liveAt": "2026-10-09T21:15:50.043Z",
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        "liveAt": "2026-10-09T21:15:36.287Z",
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    "chapter": {
      "code": "85",
      "description": "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": {
      "code": "8541",
      "description": "Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof"
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    "subheading": {
      "code": "854121",
      "description": "Transistors, other than photosensitive transistors: With a dissipation rate of less than 1 W"
    },
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        "code": "8541210040",
        "description": "Unmounted chips, dice and wafers",
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          "Unmounted chips, dice and wafers"
        ],
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        "keywords": [],
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          "code": "85412100",
          "dutyText": "Free",
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          "unit": null
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        "description": "With an operating frequency not less than 100 MHz",
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          "With an operating frequency not less than 100 MHz"
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        "description": "Other",
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          "With a dissipation rate of less than 1 W",
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        "general": {
          "code": "85412100",
          "dutyText": "Free",
          "startDate": null,
          "endDate": null,
          "unit": null
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        "measures": [],
        "restrictions": []
      }
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      "description": "Semiconductor devices (for example, diodes, transistors, semiconductor-based transducers); photosensitive semiconductor devices, including photovoltaic cells whether or not assembled in modules or made up into panels; light-emitting diodes (LED), whether or not assembled with other light-emitting diodes (LED); mounted piezo-electric crystals; parts thereof",
      "indexable": true
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      "code": "854129",
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  "code": "854121",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://border.bot/legal/terms",
  "notice": "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.",
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