A reference designator unambiguously identifies
a component within an electrical schematic or on a printed circuit borad.
en.wikipedia.org/wiki/Reference_designator
Reference designator - Wikipedia
A reference designator unambiguously identifies a component within an electrical schematic or on a printed circuit board. The reference designator usually consists of one or two letters followed by a number, e.g. R13, C1002. The number is sometimes followe
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