PCB proofing refers to making a small amount of PCB samples for functional debugging before the mass production of the circuit board; after the functional debugging is completed, follow-up mass production is carried out. This approach avoids production risks and reduces product errors. lose.

For customers, what is the most concerned factor for 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 are the most favored by purchasing customers. Now PCB proofing factories generally provide expedited services, such as 12-hour, 24-hour expedited delivery; usually the normal delivery time for single and double panels is 2 days.

2. Quality

PCB proofing, the quality can not be ignored. From raw materials, drawings, to production, testing, quality control, etc., every link needs to be strictly checked. Taking ordinary double-sided boards as an example, the plates generally include FR-4, aluminum substrate, CEM-1, etc., the thickness of the plate is from 0.4mm to 3.0m, etc., and the thickness of copper is 0.5 oz to 3.0 oz. The differences in these materials resulting in different quotes are very large. At present, the best 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 that will be the price trend for the next PCB proofing.

So, what is the standard for measuring the quality of PCB samples?

1. The copper skin is not easy to fall off in a high temperature environment;

2. The line thickness, line spacing and line width of the line meet the design requirements to prevent the line from heating, short circuit and open circuit;

3. There is no additional electromagnetic radiation on the PCB board;

4. Special environments such as high temperature and high humidity are considered in the PCB proofing process;

5. The copper surface is not easy to oxidize;

6. Reasonable deformation error; ensure that the hole position of the circuit board and the deformation error of the circuit design are within the allowable range.

Combining the above six aspects to measure the proofing circuit board, you can judge whether it is "excellent". At present, there are thousands of PCB proofing manufacturers on the market. It is recommended that users keep their eyes open during the selection process, and choose a manufacturer based on a certain understanding of PCB to prevent being deceived.