Learn what causes nickel–copper adhesion failure in flexible PCBs, how to test it with peel, cross-section and thermal shock, and which plating controls prevent blisters and peeling.
How PCB hole wall quality inspection works: AOI, backlight test, microsection, copper thickness checks, IPC acceptance criteria, common defects and process fixes.
Back to Part 1 « Effect of Process Parameters on Line Widths in Circuit and Packaging Layers Process parameters are critical to the line widths in circuit and packaging layers. Therefore, this study [...]
High-frequency FPC materials are flexible circuit substrates built to keep signal loss low at GHz frequencies. They use resins with a low dielectric constant and a low dissipation factor, such as [...]
Back to Part 1 « Evaluation by replacing dry film with a wet film with better flow properties Liquid ink shows good filling and flow properties. It is expected to effectively [...]
Ultrasound probe products are widely used in medical diagnostic equipment. Some probes are designed for single use and are classified as medical consumables, resulting in strong market demand and broad growth [...]
Flexible printed circuits (FPCs) are a specialized type of printed circuit board increasingly used in miniaturized and diversified electronic products. As applications expand, FPC designs have become more complex. Unlike conventional [...]
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