PCBA Tech - 5 important quality management links in PCBA processing

5 important quality management links in PCBA processing

Human demand for electronic products continues to grow, which promotes the rapid development of the electronics manufacturing industry, and the process technology continues to precipitate. With the popularity of smart phones and wearable devices, the lean manufacturing capabilities of electronic products have become more demanding, which inspires more electronic manufacturing companies to pay attention to PCBA quality management. This article focuses on the key points of PCBA electronic manufacturing quality management.

1. PCB production

There are many factors that determine the quality of PCB. Among them, the most important substrate material, dust-free exposure, and copper coating are the most critical. The audit of PCB factories should not only pay attention to their scale and environment, but also pay attention to these key quality points. The grades of substrate materials range from A to C, and the prices vary greatly. The cleanliness management of the dust-free exposure workshop can also be known through the documents of a third-party testing agency. The copper coating process of the circuit board has extremely high requirements for consistency and uniformity. The replacement management of the solution must be standardized, and the equipment maintenance must be in place. The copper coating process also needs to be summarized and improved repeatedly in practice.

2. Procurement of Components

Ensure that the components come from the original brand, which is critical to the packaging process, and can prevent batch defects from the source. Electronic manufacturing companies need to set up incoming material inspection positions (IQC, Incoming Quality Control), check the consistency of incoming materials, and sample the appearance, component values, errors, etc. PCBA electronics manufacturing companies also need to continuously optimize their component supplier channels.

3. Surface mount technology

In the SMT surface mount process, PCBA electronics manufacturing companies need to ensure that the solder paste printing is uniform and consistent, and the SMT machine programming is reasonable to ensure the placement yield of high-precision IC and BGA. 100% AOI inspection and manufacturing process quality inspection (IPQC, In-Process Quality Control) is very necessary. At the same time, it is necessary to strengthen the management of feeding materials, and strict file management is required from material picking to stacking table.

4. PCBA test

Design engineers generally reserve test points on the PCB and provide corresponding test schemes to PCBA electronics manufacturers. In ICT and FCT tests, analyze the voltage and current curves of the circuit, as well as the results of the functional test of electronic products (possibly with some test racks), and then compare the test plans to establish the acceptance interval, which is also convenient for customers to continue to improve. .

5. Management of people

For PCBA electronics manufacturing companies, high-end sophisticated equipment is only a small part of it, and the most important thing is human management. The key is for production managers to formulate scientific production management processes and supervise the implementation of each station.

In the fierce market competition, electronic manufacturing companies continue to optimize their internal power and refine their production management is the key to continuously adapting to the market. Manufacturing quality control and service will surely become the lifeline of competition.