In the BOM, there are 1. Finished item number 2. Order 3. Material number 4. Product name specification 5. Dosage 6. Plug-in position 7. A total of seven processes.

Order, the order describes the affiliation of components, directly involved in the assembly into a finished product is called the first order, and directly involved in the assembly into a semi-finished product is called the second order. For example, capacitors and resistors are second-order materials in electronic products, because these elements The device needs to pass through SMT first, and then it can be further assembled into a product after it is made into a PCBA. Then PCBA, housing, etc. are called 1st order, because these directly make up the finished product. The division of this order is to facilitate the division of labor in production. For example, if SMT only does PCBA, you can directly check how many materials there are in the next level of PCBA, without having to read the entire BOM very hard, and then find out the materials needed for SMT production. parts.

Order, the order describes the affiliation of the components, the one that directly participates in the assembly into a finished product is called the first order, and the one that directly participates in the assembly into a semi-finished product is called the second order. For example, capacitors and resistors are second-order materials in electronic products, because these elements The device needs to pass through SMT first, and then it can be further assembled into a product after it is made into a PCBA. Then PCBA, housing, etc. are called 1st order, because these directly make up the finished product. The division of this order is to facilitate the division of labor in production. For example, if SMT only does PCBA, you can directly check how many materials there are in the next level of PCBA, without having to read the entire BOM very hard, and then find out the materials needed for SMT production.

The material number is referred to as "material number", which is the number of each component, because different materials have different properties, such as resistors with DIP and SMD, and SMD is divided into 0402, 0603, 0201, etc., in order to facilitate Quick identification, so the material number is formulated. Many companies have coding principles for components. For example, a 0603 7K ohm resistor is numbered ES0603702, E indicates that the material is an electronic component, S indicates an SMD component, 0603 is the volume of the material, 702 Indicates the resistance of the element. However, there are also many companies that do not have their own coding principles, but directly use the material number of the component manufacturer. The disadvantage of this is that if you go to an OEM factory for production, that factory has two customers at the same time. Use this material, and use the material number of the same component manufacturer. Then the materials are mixed together. If A produces first, it turns out that the materials are not enough, so B‘s will be used. When B is giving birth, B will cry over there. This cry will only delay a few more days. In case A‘s components are not stored properly when they are stored by themselves, and the components are damaged, B‘s components are taken and used when A is produced, and then when B is produced, they are used. If you have a component on the armor, you can only ask God for help.

As the name implies, the product name and specification are the specification of the component. Although it is not commonly used in production, it needs to be checked during the IQA inspection of incoming materials to ensure that no wrong materials are sent.

The usage indicates the usage quantity of the component in a product category, which can be easily counted when purchasing materials.

The position of the plug-in is usually used to describe the position of the electronic components on the PCB, which is easy to check and confirm to ensure that the SMT has no wrong components.

The above is the content article of BOM provided by ShenZhen Hao Qi Core Technology, so that everyone can understand the purpose and method of BOM establishment, and the role it plays in a product life cycle. For more information, please visit the official website.