8532.22.00 - Aluminum electrolytic

This HTS category, 8532.22.00, specifically covers fixed aluminum electrolytic capacitors. These capacitors are characterized by their use of an electrolyte and an aluminum oxide dielectric layer. They are widely employed in electronic circuits for energy storage, filtering, and smoothing direct current due to their high capacitance values relative to their size and cost.

Within the broader group of fixed capacitors (8532.2), this sub-heading distinguishes itself from its siblings by its specific dielectric material and construction. For instance, it is separate from tantalum capacitors (8532.21.00), ceramic dielectric capacitors (8532.23.00 and 8532.24.00), and those utilizing paper or plastic dielectrics (8532.25.00). The aluminum electrolytic construction is the defining feature that places an item within this classification.

Further subdivision within 8532.22.00 is based on the physical dimension of the capacitor's diameter. The subcategories (8532.22.00.20, 8532.22.00.40, 8532.22.00.55, and 8532.22.00.85) denote specific ranges of diameter from not exceeding 18 mm up to exceeding 51 mm. This granular level of detail allows for more precise classification based on the physical footprint of these components, which can be relevant for inventory management, shipping, and specific application requirements.