8529.90.19.20 - Of radar apparatus

This HTS classification, 8529.90.19.20, specifically covers printed circuit assemblies that are designed for use with radar apparatus. These assemblies are key components within radar systems, facilitating the processing, control, and display of radar signals. They typically contain integrated circuits, transistors, resistors, capacitors, and other electronic elements, all mounted on a board or substrate. The defining characteristic for classification under this code is the intended primary function of the printed circuit assembly to support the operation of radar equipment.

This category is distinct from its sibling category, 8529.90.19.40, which covers printed circuit assemblies for radio navigational aid apparatus *excluding* radar. While both relate to radio-based systems, 8529.90.19.20 is exclusively for components integral to radar functions, whereas the sibling category encompasses broader navigational aids that may not employ radar technology. The other sibling, 8529.90.19.60, serves as a residual category for any other printed circuit assemblies not otherwise specified within the broader parent category.

As this is a leaf node within the HTS structure, there are no further subcategories for this specific classification. Classification decisions at this level rely on a thorough understanding of the functional application of the printed circuit assembly and its direct relationship to radar systems, distinguishing it from general electronic components or those used in non-radar radio applications.