Han Sphere Blog

Explore the latest trends, technologies, and best practices in PCB design, manufacturing, and the electronics industry

FR4 Dielectric Constant (Er) vs Frequency Explained

FR4 Dielectric Constant (Er) vs Frequency Explained

The dielectric constant (Er) of FR4 is not a fixed value. It varies with frequency, resin composition, and manufacturing process. This variation affects impedance control and signal integrity, especially in…

Low-Loss PCB Materials for RF and Microwave Circuits

Low-Loss PCB Materials for RF and Microwave Circuits

Low-loss PCB materials are used in RF and microwave circuits to reduce signal attenuation at high frequencies. Compared with FR4, these materials provide lower dielectric loss and more stable electrical…

HDI PCB Manufacturing: Engineering for Maximum Production Yield

HDI PCB Manufacturing: Engineering for Maximum Production Yield

The manufacturing of High-Density Interconnect (HDI) PCBs represents the apex of current circuit fabrication, where the margin for error is measured in microns. This technical paper examines the critical variables…

HDI PCB Design & Technology: Pushing the Limits of Miniaturization

HDI PCB Design & Technology: Pushing the Limits of Miniaturization

High-Density Interconnect (HDI) technology has revolutionized electronic packaging by enabling higher component density and superior signal performance within a smaller footprint. This technical overview dissects the core pillars of HDI—including…

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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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