Other

Thyristors, diacs and triacs, other than photosensitive devices

NO PGA · STANDARD CUSTOMS PROCEDURE

HSN 8541 30 90 (thyristors, diacs, and triacs — other than photosensitive devices) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code (IEC), bill of entry, commercial invoice, packing list. Other semiconductor devices within Chapter 85 — including certain LED assemblies, photovoltaic modules, and solar cells — may fall under Quality Control Orders that do not extend to this tariff line.

No partner government agency notification covers this tariff line.

A word of counsel

The principal importer risk at this tariff line is misclassification: thyristors or triacs integrated into a finished assembly, or devices that also perform a photosensitive function, may be re-classified by customs to a sibling line within Chapter 85 that carries BIS compliance. A customs re-classification triggers retrospective compliance obligations and potential detention pending the relevant certification. Confirm the device specification — switching function, photosensitivity, and assembly state — against the customs tariff before relying on the absence of compliance here.

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Frequently asked

Does HSN 8541 30 90 require any pre-import registration?

A valid Importer-Exporter Code is required for any commercial import; no product-specific registration applies to this tariff line.

What changes if the device is photosensitive or assembled into a finished electronic product?

Photosensitive thyristors or triacs are classified separately within Chapter 85, and finished electronic assemblies incorporating such devices may attract BIS Quality Control Order compliance under the applicable heading, triggering retrospective obligations on re-classification.

Last verified against gazette notifications: 2026-05-16. Source: BIS / DGFT / Indian Customs CUSDATA.