sales@ipcb.com
Audemars Piguet as a PCBA foundry, every time in the electronic product customer consultation, we will ask the customer to provide a BOM list, and require BOM list specification and completeness. So, what is the role of a standardised BOM list in PCBA foundry?
The full name of the BOM list is (Bill Of Material) that is the bill of materials.In layman's terms, it is a product's bill of materials, listing in detail what electronic components or components are needed to form this product. PCBA processing manufacturers need to be based on the customer to the latest BOM list,to the production department under the production application, production cycle and the production process, compared with the bill of materials and inventory, and then purchase the missing materials; and the costing of this order, also need to be based on the latest BOM list to complete. In short, BOM is the basis of all PCBA, but also the most important information.
BOM list
The role of BOM list
1.Production planning:BOM list contains information on raw materials and all kinds of ingredients,which provides data support for production planning.Through the BOM list, production planners can clearly understand the processing preparation information,so that they can better formulate production plans.
2.Purchasing:The material information contained in the BOM list is synchronised with the purchasing department to update the details,which can help them to make purchasing plans and find suitable suppliers to save production costs.
3.Production process:Through the BOM list can understand the characteristics and composition of each product, so as to more accurately carry out the production process and improve product quality.
The preparation of the BOM list requires the co-operation of many departments, is a complex process. Through the BOM list, PCBA OEM to improve production efficiency, reduce costs, improve product quality, so as to dominate in the fierce market competition.
PCBA processing manufacturers need to purchase materials for customers based on the BOM list for production, while the financial department will also be based on the BOM list accounting production costs, manufacturing departments will also regard the BOM list as an important basis for production.Therefore,a standardised BOM list is very important.
What is a standardised BOM list?The key elements are material code, material name, specification, basic dosage, component organisation, mounting position, brand name, etc., so that operators in each process can clearly and intuitively find the correct component and know its specification, dosage and insertion position.
A standard BOM list should contain
1.Material code
2.Material name
3.Material specifications
4.Manufacturer
5.Dosage and bit number
6.Unit No.
BOM list
Many electronic engineers provide a BOM list that lacks a precise definition of the material's brand and manufacturer's code,or the manufacturer's code is missing part of the tail code, resulting in the PCBA processor may have selected a conventional series of materials by default. Often, the series of ICs with different end codes may represent subtle differences in application, packaging piping, voltage and current ratings, packaging, etc.This kind of irregularity in the BOM list may cause the PCBA processor to select a regular series of materials by default.This kind of irregular BOM list will lead to the production of PCBA boards may have some functional failures or failures in a particular application environment, and it is extremely difficult to troubleshoot. In view of this, it is highly recommended that electronic engineers standardise the brand, manufacturer's code, description and packaging of each material and other extremely important information. In this process, reference can be made to public platforms such as Digikey and Mouser.
Because the R&D and production of electronic products are repeatedly calculated and updated, and will be constantly promoted to optimise the product, in this process,the BOM list will also be updated along with it,even if it is an update of a material, it will have an immeasurable impact on the product. Therefore, after each update, the old BOM list must be marked as outdated and sealed to stop using.In order to ensure the order of version and model management, the BOM list of the product must be issued by the R&D department and used online, or at least signed by the R&D engineers and the head of the R&D department at each level to ensure the correctness of the BOM list. Then we should contact the PCBA OEM in time to provide the new BOM list to the PCBA manufacturer to avoid the situation that the BOM list is updated, but the product is still purchased and produced according to the old BOM list.
Therefore, a standard BOM list is extremely important for material procurement,PCBA production,ERP system entry and financial costing.