PCB Technical - PCB industry material coding knowledge

The raw materials used in the production of products in each industry have their own scope and characteristics. For the PCB industry, copper clad laminates, copper foils, and fibers (P sheets) that are laminated as laminates can be called main materials, and ink, dry film, and syrup are indispensable auxiliary materials. As the first step of material coding, the materials must be classified and coded first. There are many methods and basis for distinguishing material types and codes, but the overall difference will not be too great.

Copper Clad Laminate (CB), Copper Foil (CF), Fiber (PP), Ink (IN), Dry Film (DF), Chemical Solution (MT), Drill Tip (DR), Maintenance Supplies (MA), Consumables (OT), Finished products.

The following author combines the experience of implementing ERP systems in many PCB companies to analyze the detailed coding rules of various material types, and analyze their advantages and disadvantages, hoping to give some inspiration to the industry.

Analysis of Coding Rules for Copper Clad Laminates

As the most important material in the PCB industry, the coding rules of copper clad laminates generally need to consider factors such as the type of copper plate, the nature of the copper plate, the watermark of the copper plate, the thickness of the copper plate, the thickness of the copper surface, the size of the copper plate, the color of the plate, and so on. Therefore, the coding of the copper clad laminate will be the PCB industry. The most complicated and most difficult item of material coding.

1. Rules: copper plate model + nature + watermark + copper plate thickness + copper surface thickness + size + sheet color

2. Rule analysis: The code of this rule has a total of 14 digits, which can more completely reflect the attributes and characteristics of the material and provide a good room for expansion.

Some people like to indicate the supplier number in the copper clad laminate code. The author believes that it is not necessary to do so: because doing so will artificially increase the number of codes, and the copper plate model itself also reflects the supplier's information, such as S1141 for livelihood Benefit materials, KB6160 stands for Kingboard materials, etc.

Regarding the size of the copper plate, some companies like to directly use the length and width of the copper plate as the code. For example, the 41" * 49" copper plate has a code of 410490. Although the code length has been increased by three digits, the code is more intuitive and correct. choose.

Analysis of Copper Foil Coding Rules

Generally speaking, for copper foil coding, factors such as copper foil thickness, copper foil width, and supplier number need to be considered.

1. Rule: Copper foil thickness + copper foil width + supplier number

2. Rule analysis: The code of this rule is about 11 digits, which completely reflects the basic properties of the material. In terms of scalability, such as the thickness and width of the copper foil, codes can be flexibly added as needed.

Analysis of Fiber Coding Rules

Generally speaking, for fiber (P sheet) coding, factors such as fiber thickness, copper foil width, and size need to be considered.

1. Rule: fiber model + fiber specification + size

2. Rule analysis: This rule code has a total of 10 digits. Some companies like to add supplier code to the code. The author believes that the supplier can be clearly recognized from the fiber model, so there is no need to re-identify it in the material code.

Analysis of ink coding rules

Generally speaking, the coding of ink should consider its model, color and process used. It is also a special feature of the PCB industry to distinguish the uses of inks according to the process.

1. Rule: ink type + ink color + process used

Analysis of Dry Film Coding Rules

Generally speaking, the coding of dry film should consider its model, size and length. The length here refers to the unfolded length of each roll.

1. Rule: dry film model + dry film size + dry film length

Analysis of potion coding rules

Generally speaking, for the coding of the potion, the process, form and name of the potion should be considered.

1. Rule: Process used + potion form + potion name

Analysis of Drill Bit Coding Rules

Generally speaking, the code of the potion should consider the model of the drill bit, the length of the drill bit, and the diameter.

1. Rule: drill tip model + drill tip blade length + diameter size

Analysis of Maintenance Supplies Coding Rules

Generally speaking, maintenance supplies can be further subdivided into machine maintenance, water engineering, electric power engineering, plant maintenance, etc., and coding can be carried out directly through the sub-category combined with the serial number.

1. Rule: sub-category + product name

Analysis of Consumables Coding Rules

The consumables are messy, and the types are also richer. When coding, the general idea is to subdivide all types of consumables according to their purpose, and then combine the names of the items for stream coding. Because the quantity and types are rather messy, this article will not give examples one by one.

Analysis of finished product coding rules

Regarding the coding of finished products (the so-called factory coding), different companies have different concerns: some companies hope that the plan is simple and clear, and some companies hope to reflect the product type, product layer number, process characteristics, etc. in the code.

The following are examples of different encoding rules:

1. Scheme 1: Five-digit serial number + (external version + internal version)

Rule analysis: The external version and internal version in this scheme are generally controlled and processed by the ERP system, and are not actually reflected in the coding. This scheme is short and precise welding, easy to remember and quick to operate. The disadvantage is that the information expressed is too little, and more information about the product cannot be learned by coding alone.

2. Scheme 2: Customer number + "-" + five-digit serial number + (external version + internal version)

Rule analysis: The code of this scheme is relatively short, but it is clear which customer the product belongs to, and the code is composed of pure numbers, and the operator can operate it through the numeric keyboard.

3. Scheme 3: Product nature + production process + number of layers + "-" + five-digit serial code + (external version + internal version)

Rule analysis: This program code adds more content, and you can directly understand the three major attributes of the product: product nature, production process and product layer number. The disadvantage is that the code is longer and it is not easy to remember and operate.

3 Conclusion

There is no certain rule for the material coding of ERP system. As long as it does not violate the general principle of material coding, each PCB factory can work with each department to formulate coding rules that meet the actual situation of the company according to its own actual situation. And it can be perfected in the process of production and operation to form a material coding system that adapts to the company's development.