HS Code for Thyristor

Thyristors are classified under HS code 8541.30. This classification is determined by the nature of the device as a discrete semiconductor. According to the Explanatory Notes to the Harmonized System, heading 8541 includes semiconductor devices whose operation depends on the variation in resistivity on the application of an electric field. Thyristors, which include Silicon Controlled Rectifiers (SCRs), are four-layer semiconductor devices acting as bistable switches. They are distinct from transistors because they are designed specifically for power switching applications rather than amplification. The classification 8541.30 specifically groups thyristors, diacs, and triacs together, excluding photosensitive devices. This classification remains consistent regardless of whether the thyristor is packaged individually or in a simple module, provided it does not incorporate other active components that would transform it into an integrated circuit or a complex power module classified elsewhere.

Products Included

• Silicon Controlled Rectifiers (SCRs)
• Triodes for Alternating Current (Triacs)
• Diode Alternating Current switches (Diacs)
• Gate Turn-Off thyristors (GTOs)
• Phase control thyristors

Common Misclassification

Thyristors are often misclassified under HS code 8542.39, which covers electronic integrated circuits. The key difference is that a thyristor is a discrete semiconductor device, whereas an integrated circuit contains multiple active and passive elements inseparable on a single substrate. Another common error is using HS code 8536.50 for electrical switches. While a thyristor performs a switching function, it is a solid-state semiconductor and must be classified in Chapter 8541 rather than as a mechanical or electromechanical switch.

FAQ

What is the HS code for Thyristor?

The HS code for a thyristor is 8541.30, which covers thyristors, diacs, and triacs.

Are photosensitive thyristors classified under 8541.30?

No, photosensitive semiconductor devices, including photothyristors, are classified under HS code 8541.41 or 8541.49, depending on their specific function.