8541.60.00.80 - Other

This classification pertains to mounted piezoelectric crystals. Piezoelectric crystals are materials that exhibit the piezoelectric effect, meaning they generate an electric charge in response to applied mechanical stress, or conversely, deform when an electric field is applied. "Mounted" signifies that these crystals are typically secured within a housing or on a substrate, making them ready for integration into electronic circuits or devices. Common applications include oscillators, filters, transducers, and sensors, where their precise frequency-generating or sensing capabilities are utilized.

At this level, the primary distinction from sibling categories lies in the specific nature of the product. While sibling categories might focus on unmounted crystals or crystals designed for specific frequency ranges, this category encompasses all mounted piezoelectric crystals that do not fall under more specific subdivisions. The key differentiator is the presence of mounting, which implies a level of readiness for assembly and application within a broader electronic system.

As this node represents a leaf category within the HTS structure, there are no further subcategories to introduce. Therefore, the classification is complete at this level. When classifying goods under 8541.60.00.80, the focus will be on confirming that the item is indeed a piezoelectric crystal that has been mounted and does not fit into any more narrowly defined subheadings related to specific frequencies or mounting types that might exist at higher levels of detail.