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What Does "M" Mean in PCB Materials?

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          During the selection of high-speed PCB materials, engineers and PCB manufacturers often refer to material classifications such as M4, M6, and M7. Common  statement s include  “ M4 is sufficient for this project, ” “ M6 or higher-grade materials are recommended for high-speed backplanes, ”  and  “ Does a 112G PAM4 application require M7? ”  For many engineering teams, these classifications have become a common industry shorthand for discussing the performance levels of high-speed PCB materials.   So, what do the “M” classifications in PCB materials actually mean? What are the differences among M4, M6, M7, and other similar categories? Do they represent material performance levels, industry standards, or naming conventions used by laminate manufacturers? In practice, these classifications can be understood from several different perspectives.       1.  The Origin of the M-Series Naming Conventio...
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HoYoGo's Birthday Party in May 2026

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          Carried by the breeze, the fresh scent of greenery drifts past the windows in May. The sunlight, shedding the softness of spring, grows warmer and brighter—much like the joy we shared that day, vibrant and enduring. On this lively and flourishing day, HoYoGo’s   May Birthday Party   opened with laughter and joy. First,  Mr. Liu said : With the rapid development of AI technologies, the PCB industry is shifting from scale-driven expansion to technology-driven growth, bringing both opportunities and challenges.  To maintain a competitive edge, he emphasized the importance of strengthening fundamental work. From email handling and drawing verification to customer communication and shipping arrangements, every detail must be handled with rigor and professionalism.   He further pointed out that the more complex the external environment becomes, the more essential it is to strengthen internal capabilities. By standardizing workfl...
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Insulation and Protection Performance of EV Charger PCBs

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          As a critical electronic carrier within EV charging equipment, the PCB is widely used in key electrical units such as power control, status monitoring, and communication systems. It performs essential functions including component mounting, electrical interconnection, signal transmission, and power distribution. With the rapid advancement of fast-charging technologies for new energy vehicles and the increasing demand for long-term outdoor operation of charging infrastructure, the insulation stability and environmental adaptability of EV charger PCBs have become crucial factors affecting overall equipment reliability.   As a professional automotive PCB manufacturer, HoYoGo specializes in PCB  manufacturing   for new energy vehicle and power electronics applications. Through rigorous material management, strict   manufacturing   process control, and comprehensive reliability verification,  we  provide stable and du...
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