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XRF:

Corrosion on Polyimide and Silicone PSA

Gideon Analytical Laboratories received a flex circuit with a mystery corrosion on the polyimide and silicone pressure sensitive adhesive (PSA).  There was corrosion by-product, and the silicone adhesive appeared more like a gelatinous material than a tactic PSA. Contrary to popular belief, flex circuits are not training for a future bodybuilding competition, they are a technology for […]

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C2 backside, analyzed by SEM-EDS-XRF

Contamination and Moisture on MLCCs

Gideon Analytical Laboratories received a printed circuit board (PCB) with suspected failing multi-layered ceramic capacitors (MLCC).  Multilayer ceramic capacitors are fixed value capacitors in which ceramic the material acting as the dielectric.  It is made up of two or more alternating layers of ceramic and a metal layer acting as the electrodes.  There are various […]

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