2026-05-06
Many electronics engineers have made mistakes with component footprints during PCB layout. The footprint is either oversized or undersized, and in some cases, component interference occurs. As a result, components cannot be soldered onto the fabricated PCB, forcing manual jumper wire fixes. In severe cases, the entire board is scrapped. For example, the footprint of U8 in the figure below is designed too small, making chip soldering impossible.