PCB proofing refers to the production of a small amount of PCB samples for functional debugging before the mass production of circuit boards; after the functional debugging is completed, subsequent batch production will be carried out. This method can avoid production risks and reduce product errors. Loss.
For customers, what factors are most concerned about PCB proofing?
1. speed
In the PCB industry, time is a very important factor. Delivery time and quality are the hard power of the factory, and they are also the most favored by purchasing customers. Now PCB proofing factories generally provide expedited services, such as 12-hour and 24-hour expedited shipments; usually the normal delivery time for single and double panels is 2 days.
2. Quality
PCB proofing, the quality must not be ignored. From raw materials, drawing, to production, testing, quality control, etc., every link needs to be strictly checked. Take ordinary double-sided boards as an example, the board materials generally include FR-4, aluminum substrate, CEM-1, etc., the thickness of the board is from 0.4mm to 3.0m, etc., and the thickness of copper is 0.5oz to 3.0oz. The difference in these materials causes the price difference It is very large. At present, the better materials used by manufacturers are imported plates.
3. Price
With the development of the industry, the price of PCB proofing and small and medium batch production is constantly falling. Complete challenging tasks with challenging prices, this will be the price trend of PCB proofing in the future.
So, what are the criteria for measuring the quality of PCB proofing?
1. The copper skin is not easy to fall off under high temperature environment;
2. The line thickness, line distance, and line width of the line all meet the design requirements to prevent the line from heating, short circuit and open circuit;
3. PCB board has no additional electromagnetic radiation;
4. In the PCB proofing process, high temperature, high humidity and other special environments are taken into consideration;
5. Copper surface is not easy to be oxidized;
6. Reasonable deformation error; the hole position of the circuit board and the deformation error of the circuit design are guaranteed to be within the allowable range.
Combining the above six aspects to measure the proofed circuit board, you can judge whether it is "excellent". At present, there are tens of thousands of PCB proofing manufacturers in the market. It is recommended that users keep their eyes open during the selection process, and choose a manufacturer on the basis of a certain understanding of PCB to prevent being deceived.
