Many early PCBs have a "hatched copper pour", sometimes called a "cherry pie lattice". PCB designers today almost invariably use completely solid areas of copper pour that completely cover the remaining area outside those tracks, pads, and stand-off regions. A copper pour therefore looks like it flows around other components, with the exception of pads which are connected to the copper pour using thermal connections. Another reason for using copper pour is to reduce the amount of etching fluid used during manufacturing.Ī distinctive feature of copper pour is the backoff (or stand-off) - a certain distance between the copper pour and any tracks or pads not belonging to the same electrical net. Copper pour is commonly used to create a ground plane. In electronics, the term copper pour refers to an area on a printed circuit board filled with copper (the metal used to make connections in printed circuit boards). Copper pour is sometimes filled using a hatch fill style.
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