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The coefficient of thermal expansion (CTE) describes how much a PCB material expands or contracts as temperature changes. Matching CTE to the application helps improve solder joint reliability, plated through-hole…
Senior PCB Professional
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Glass transition temperature (Tg) is one of the key specifications used to evaluate PCB materials. It indicates the temperature at which a laminate begins to change from a rigid state…
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Dielectric loss, also known as dissipation factor (Df), measures how much electrical energy is lost as signals travel through a PCB material. Understanding Df helps engineers select suitable laminates for…
Senior PCB Professional
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PCB dielectric constant (Dk) is one of the most important electrical properties of PCB materials. It affects signal speed, impedance control, and high-frequency performance. This article explains what Dk means,…
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Copper weight is one of the key specifications in PCB manufacturing. It influences current carrying capacity, trace dimensions, thermal performance, manufacturing complexity, and production cost. Choosing the appropriate copper weight…
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PCB prepreg is a partially cured fiberglass and resin material used to bond layers together during multilayer PCB lamination. This article explains prepreg construction, functions, types, thickness, and selection considerations.
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PCB substrate and PCB laminate are often used interchangeably, but they do not always mean exactly the same thing. This article explains how the two terms differ, where they overlap,…
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PCB material selection directly affects electrical performance, thermal management, reliability, and manufacturing cost. This article explains the most widely used PCB material types and helps engineers choose the right substrate…
Senior PCB Professional
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from fiberglass weaving and epoxy resin impregnation to copper lamination and quality inspection. Understand the process behind the industry's most widely used PCB substrate.
Senior PCB Professional
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FR4 is the most widely used PCB substrate in the electronics industry. It combines good electrical insulation, mechanical strength, thermal stability, and cost efficiency, making it suitable for a wide…
Senior PCB Professional
Han Sphere Blog shares the latest trends, technologies, and best practices in PCB design, manufacturing, and the electronics industry. Our expert team regularly shares their knowledge and experience.
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