BOM is a very important information in SMT processing, it is the abbreviation of Bill of Components. It lists all the components required on the circuit board and the specification parameter information of each component. In the general BOM list, in addition to the product name, part number and description of each material, the amount and supplier information will also be given. And a perfect BOM usually also has a flowchart and instruction manual.

All in all, a perfect BOM consists of the following:

1. Designator

2. Material name

3. Specifications/Models

4. Packaging

5. Brand

6. Quantity

7. Material Specifications

8. Supplier Information

9. Remarks

We usually explain to customers what kind of BOM is required. If the customer directly provides CAD data or Gerber data, we cannot ensure that the customer's BOM is output completely and correctly. Therefore, we usually ask customers to provide the original BOM so that we can use the correct material in SMT machining.

Below is part of the BOM for reference: