8533.21.00.90 - Other (including metal film, metal oxide and thick cement film)

This HTS category, 8533.21.00.90, encompasses a variety of "other" fixed electrical resistors designed to handle a power capacity not exceeding 20 watts. This designation specifically includes resistors constructed from materials such as metal film, metal oxide, and thick cement film. These components are crucial in electronic circuits for controlling current flow and voltage levels, and their classification here is based on their power rating and construction materials, excluding wirewound types.

Distinguishing this category from its sibling, 8533.21.00.80, is the material and construction method. While both fall under fixed resistors with a power handling capacity not exceeding 20W, the sibling category is exclusively for "wirewound" resistors. Therefore, 8533.21.00.90 is for all other fixed resistors within this power range that are *not* wirewound, such as those employing a resistive layer of metal or metal oxide deposited on a substrate, or those encased in cement.

As this is a leaf node within the HTS structure, there are no further subcategories to introduce. Classification at this level is final, requiring a thorough examination of the resistor's physical characteristics and construction to ensure it meets the criteria for metal film, metal oxide, or thick cement film types, and falls within the specified power handling limit of 20 watts, thereby differentiating it from wirewound counterparts.