8518.90.20.00 - Printed circuit assemblies of line telephone handsets; parts of repeaters

This HTS category, 8518.90.20.00, specifically covers printed circuit assemblies (PCAs) that are designed for use in line telephone handsets. It also encompasses parts of repeaters. The key distinguishing factor for PCAs under this subheading is their direct integration and functional necessity within a line telephone handset. Repeaters, in this context, refer to devices used to regenerate or boost signals, and the parts classified here are those specifically for such equipment.

This category differentiates itself from its sibling, 8518.90.41.00 ("Other"), by its specific inclusion of PCAs for telephone handsets and parts of repeaters. The "Other" category would encompass parts for other types of audio equipment or components not otherwise specified within the broader 8518 heading. The focus here is on components integral to the communication and signal amplification functions of specific telecommunications devices.

As a leaf node, this classification does not have further subdivisions. Therefore, it is crucial for importers and exporters to ensure that the printed circuit assemblies are indeed intended for line telephone handsets or are parts specifically for repeaters to correctly apply this tariff code. Components found in broader audio equipment, or parts not directly tied to the function of a telephone handset or a repeater, would likely fall under a different classification.