PCB Design Glossary
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Ball Grid Arrays are components that connect to a PCB via a rectangular series of pads and solder-balls.
Bill of Materials
The bill of materials (B.O.M.) is an itemized list of parts and components that will be used in a design. Each component will have a designator, a part number, supplier, etc....
Each BOM should be saved as a CSV, XLS, or XLSX file with no merged cells, no formulas, or other unusual formatting. It is a good idea to have alternate part numbers on hand in case they are needed.
Circuits can be divided into blocks that have a particular function. One benefit of this approach is that a functional block can be easily reused in future designs