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Printed circuit boards, or PCBs, are categorized as rigid or flexible. The former can be further divided into three types: single-sided, double-sided, and multi-layered PCBs. PCBs can be divided into three quality classes according on their characteristics: Class 1, Class 2, and Class 3, with Class 3 having the greatest requirements. Variations in PCB quality class result in variations in test and inspection techniques as well as complexity. Flex PCBs are occasionally used in specific situations, but stiff double-sided PCBs and multi-layer PCBs still account for a sizable portion of applications in electronic products as of right now.
As a result, this paper will address quality inspection concerns with a particular focus on rigid double-sided and multi-layer PCBs. It is necessary to conduct an inspection following PCB fabrication to ascertain whether the quality meets design specifications. One way to phrase it is that quality inspection serves as a crucial safeguard for the consistency of the final product and the efficient execution of related processes..
Although there are many different types of printed circuit boards, same quality inspections are required to be proceed. Quality inspection is including visual inspection, electric performance and general technological inspection.
At first, it's Visual Inspection: While using ruler, gauge, vernier caliper and glass etc to perform the visual inspection.
1- The surface appearance, board thickness and dimensions.
2- To checks whether have short circuit and open circuit.
3- Coating quality is also part of visual inspection.
The second part is Electrical Inspection:
1- It is known as connecting performance test.
2- The different way is insulating performance test.
Finally, General Technological Inspection: It covers solderability and adhesion of plates.The wetting performance of solder to conductive patterns should be inspected. And other procedures can be adopted according to special requirements.
Please send Email to kspcba@c-alley.com or call us through +86 13828766801 Or submit your inquiry by online form. Please fill out below form and attach your manufacturing files( PCB Gerber files and BOM List) if need quotation. We will contact you shortly.
+86 13828766801
kspcba@c-alley.com
https://www.kingshengpcba.com/
2/F, Building 6, Tangtou 3rd Industrial Zone, Tangtou Community, Shiyan Town, Baoan District, Shenzhen, China, 518108
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