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Conformal coating is a protective, breathable coating of thin polymeric film applied to printed circuit boards (PCBs). Conformal coatings are typically applied with 25–250 μm [ 1 ] thickness on electronic circuitry to protect against moisture and other substances.
Coatings of parylene are often applied to electronic circuits and other equipment as electrical insulation, moisture barriers, or protection against corrosion and chemical attack (conformal coating). They are also used to reduce friction and in medicine to prevent adverse reactions to implanted devices .
Glob-top is a variant of conformal coating used in chip-on-board assembly (COB). It consists of a drop of specially formulated epoxy [4] or resin deposited over a semiconductor chip and its wire bonds, to provide mechanical support and exclude contaminants such as fingerprint residues which could disrupt circuit operation. It is most commonly ...
Pages in category "Coatings" ... Conformal coating; Conversion coating; Curtain coating; D. Detonation spraying; Diamond-like carbon; Dimethylolpropionic acid;
Lambert conformal conic: Conic Conformal Johann Heinrich Lambert: Used in aviation charts. 1805 Albers conic: Conic Equal-area Heinrich C. Albers: Two standard parallels with low distortion between them. c. 1500: Werner: Pseudoconical Equal-area, equidistant Johannes Stabius: Parallels are equally spaced concentric circular arcs.
It is also used in wood preservatives, insecticides, and coating materials. [citation needed] Anthracene is commonly used as a UV tracer in conformal coatings applied to printed wiring boards. The anthracene tracer allows the conformal coating to be inspected under UV light. [29] Fluorescence of anthracene under UV light