PCB News - PCBA board brings new challenges for testing

PCBA board brings new challenges for testing
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Electronic components: The technical content of PCBA boards is getting higher and higher, and the size of surface mount devices continues to shrink and the subsequent high-density circuit installation has brought great challenges to traditional testing, which is what technical engineers will face One of the difficult problems.

Someone once conducted such a test on PCBA boards, and asked four experienced inspectors to inspect the solder joint quality of the same board four times. As a result, the first inspector detected 44% of the defects, the second inspector had 28% consistency with the first, and the third inspector was consistent with the previous Two of them have 12% agreement, while the fourth examiner has only 6% agreement with the first three. This test exposes the subjectivity of manual visual inspection. For highly complex surface mount circuit boards, manual visual inspection is neither reliable nor economical. For surface-mount circuit boards that use tiny ball arrays without packaging, chip-scale packaging, and flip-chips, manual visual inspection is practically impossible.
Not only that, due to the reduction of pin spacing and the increase of pin density of PCBA board surface mount devices, the needle-bed online test is also facing the dilemma of "no place to stand."
In addition, according to the North American PCBA board manufacturing planning organization, it is estimated that after 2003, the online test will not be able to achieve satisfactory test coverage for high-density packaged surface mount circuit boards. Based on the 100% test coverage rate in 1998, it is estimated that the test coverage rate will be less than 50% after 2003, and the test coverage rate will be less than 10% after 2009. iPCB is happy to be your business partner. Our business goal is to become the most professional prototyping PCB manufacturer in the world. With more than ten years of experience in this field, we are committed to meeting the needs of customers from different industries in terms of quality, delivery, cost-effectiveness and any other demanding requirements. As one of the most experienced PCB manufacturers and SMT assemblers in China, we are proud to be your best business partner and good friend in all aspects of your PCB needs. We strive to make your research and development work easy and worry-free.
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