Signal trace

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Signal traces on a PCB are visible between solder points
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Signal traces on a PCB are visible between solder points

In electronics, a signal trace on a printed circuit board (PCB) is the equivalent of a wire for conducting signals. Each trace consists of a flat, narrow part of the copper foil that remains after etching. Signal traces are usually narrower than power or ground traces because their current carrying requirements are usually much less.

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