8541.60.00.10 - 32.768 kHz

This HTS classification, 8541.60.00.10, specifically covers mounted piezoelectric crystals designed to operate at a frequency of precisely 32.768 kHz. These crystals are fundamental components in electronic circuits, acting as oscillators to generate a stable and accurate reference frequency. Their primary applications are often found in applications requiring a precise timekeeping function, such as real-time clocks (RTCs) within microcontrollers, watches, and various portable electronic devices.

Distinguishing this category from its siblings is critical for accurate classification. While all fall under mounted piezoelectric crystals, this specific code is exclusively for those operating at 32.768 kHz. Sibling categories cover different frequency ranges: 8541.60.00.20 encompasses crystals not exceeding 1 MHz but *excluding* 32.768 kHz, while other siblings cover frequencies exceeding 1 MHz up to specific thresholds. The precise operating frequency is the sole differentiating factor among these closely related subheadings.

As this is a leaf node within the HTS, there are no further subcategories. The classification ends at the specific frequency of 32.768 kHz. Therefore, the key classification criterion is the stated operating frequency of the mounted piezoelectric crystal itself. Any crystal not meeting this exact frequency would be classified under a different sibling subheading.