Shenzhen PCBA manufacturers complain: technicians make mistakes, resulting in a large number of defective products, loss of millions

Recently, a circuit board manufacturer in Shenzhen complained that the PCBA boards produced in the workshop were almost full of production lines. The reason was that a lot of bubbles appeared in the tin spots on the recently processed PCBA circuit boards due to errors in the operation of the technicians. The customer received the goods. After the product inspection found defective products, all returned. Because the circuit board manufacturer does not have non-destructive testing equipment, it is impossible to determine which PCBA is good and which is defective. Later, a friend introduced Zhuomao Optoelectronics Technology.
After understanding the manufacturer’s confusion, Zhuomao Optoelectronics invited some PCBA boards to come over for testing. After inspection, it was found that there were a lot of bubbles in PCBA, as shown in the following figure: blue is the outline of the pad, red circles are bubbles, Big bubbles are bigger.
After random testing, it was found that this product did have a major quality problem, which caused the manufacturer to lose hundreds of thousands of labor and materials directly. In order to speed up the batch, the company quickly added Zhuomao Optoelectronics X- Ray testing equipment strictly checks the products produced. It is reported that the boss personally supervises and conducts spot checks in real time and evaluates the data report after the X-RAY inspection, so as to reassure customers.

The impact of PCBA circuit boards containing bubbles on product quality is mainly reflected in:

Unpredictable electrical failure, or unpredictable contact failure to the circuit;
Reduced electromagnetic interference control
Reduced service life

The PCBA circuit board X-RAY inspection equipment can penetrate the sample detection well and save the detection image at the same time, which can play a good auxiliary role in the later analysis of the product.