The author of Japan's "Circuit Board Collection", Masao Kobayashi, said:; Without semiconductors and circuit boards, electronic components are just ordinary stones;, No circuit boards, no electronic circuits, flight, transportation, atomic energy, computers, aerospace, communication, home appliances&hellip& Hellip; All of this cannot be achieved. It can be seen that circuit boards are closely related to our modern life. Therefore, in the production process of circuit boards, quality control is very important. Metallographic inspection is one of the commonly used methods for quality control. Measurement data is usually analyzed using statistical techniques, mainly analyzing the center distance of through-holes, coating thickness, etc.

    Printed circuit board is a relatively complex material system, mainly composed of a substrate and metal foil, usually copper, gold, or nickel plated. Most circuit boards are composed of multi-layer glass fibers and polymers, and there are also some that do not contain glass fibers. In addition, the composition of solder is also greatly different, which brings some difficulties to the preparation of metallographic samples. QMAXIS sample preparation experts have summarized their experience and shared with friends the relatively simple and effective preparation methods we have used in QMAXIS metallographic equipment and QMAXIS metallographic consumables in practice. We hope to provide some help to our friends.

    Based on our preparation experience, we have summarized the commonly used five step sample preparation procedures, as follows:

    The above is a five step method for preparing metallographic samples of bare PCB printed circuit boards, for your reference. Depending on the specific inspection purpose, personalized differences in PCB versions, and other factors, the preparation methods may also vary. If you need detailed understanding or have difficult questions that require the support of QMAXIS application engineers, please contact us. You are also welcome to personally experience QMAXIS metallographic equipment and consumables in QMAXIS's laboratory.