Silicon Wafer Back Grinder

Precision grinder that thins silicon wafers from the backside to target thickness (e.g., 50-100 microns) for advanced packaging. HTS 8461.90.60 applies as wafer preparation equipment removing semiconductor cermet material.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
๐Ÿ‡จ๐Ÿ‡ณChina4.4%+35.0%39.4%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico4.4%+10.0%14.4%
๐Ÿ‡จ๐Ÿ‡ฆCanada4.4%+10.0%14.4%
๐Ÿ‡ฉ๐Ÿ‡ชGermany4.4%+10.0%14.4%
๐Ÿ‡ฏ๐Ÿ‡ตJapan4.4%+10.0%14.4%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8460.39.00Same rate: 39.4%

If general surface grinding to shape

Other grinding machines not dedicated to semiconductor wafers.

8479.89.65Lower: 20.3% vs 39.4%

If sold as complete wafer processing line machine

Integrated systems may fall under machines NESOI for semiconductor use.

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Import Tips & Compliance

โ€ข Specify minimum achievable thickness in technical literature submitted

โ€ข Classify tape frames separately if imported together

Related Products under HTS 8461.90.60

Multi-Wire Wafer Saw

Advanced wire saw using hundreds of diamond wires simultaneously to slice silicon bricks into wafers with minimal kerf loss. HTS 8461.90.60 for semiconductor slicing equipment removing material.

Stress Relief Wafer Grinder

Grinds wafer edges to remove stress-induced microcracks from slicing, preventing breakage in later processing. Specialized semiconductor grinder under HTS 8461.90.60 per statistical notes.

Wafer Surface Lapper

Single-sided lapping machine that conditions wafer surfaces for epitaxial growth by removing saw damage and achieving parallelism. HTS 8461.90.60 classification per wafer preparation statistical provisions.

Diamond Wafer Polishing Machine

Uses diamond slurry and pads to polish semiconductor wafers to mirror finish required for lithography. Mechanical polishing action removes cermet, placing it under HTS 8461.90.60 statistical note (a)(ii)(C).

Crystal Ingot Notcher

Machine that notches silicon ingots to precise flats indicating crystal orientation and doping. Performs slotting/planing operations removing material, thus HTS 8461.90.60 for semiconductor boule preparation.

Czochralski Crystal Puller

A machine tool used to grow monocrystalline silicon boules by pulling a seed crystal from molten silicon in the Czochralski method. It removes excess material through precise shaping and grinding processes to achieve the required boule diameter and flats, classifying it under HTS 8461.90.60 as other semiconductor manufacturing equipment involving metal/cermet removal.