HC-18U Quartz Crystal 455 kHz from Mexico
HC-18U series quartz crystals at 455 kHz are used in IF filters for AM radios and low-frequency receivers. This mounted piezoelectric crystal fits HTS 8541.60.00.20 as its frequency is below 1 MHz and not the excluded 32.768 kHz, providing precise filtering in analog circuits.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include radio application specs showing IF filter use to support <1 MHz classification
• Separate from 32.768 kHz lots during customs declaration to maintain subheading accuracy
• Verify hermetic sealing prevents moisture damage declarations during import