PCB prototype in electronics manufacturing A printed circuit board (PCB) electrically connects electronic components by etching conductive pathways from a copper sheet laminated onto a non-conductive substrate. PCBs typically consist of a copper foil conducting layer and an insulating layer laminated with epoxy resin prepreg, with FR-4 being the most commonly used material. PCBs can be single-sided or double-sided, the latter allowing connections on both sides via through-hole plating. In electronics manufacturing, PCB prototyping is essential before mass production, enabling testing of the layout. While prototype boards may differ slightly from the final product, maintaining similarity ensures that the final PCB functions as intended.
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