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Revision as of 22:21, 17 April 2014 editPcborenstein (talk | contribs)2 editsm Added refference for conformal coating← Previous edit Revision as of 15:04, 15 June 2015 edit undoRachel123s (talk | contribs)201 edits added referenceNext edit →
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] potted in epoxy. The surface visible on the right is formed by the potting compound that has been poured into the plastic box]] ] potted in epoxy. The surface visible on the right is formed by the potting compound that has been poured into the plastic box]]


In ], '''potting''' is a process of filling a complete electronic assembly with a solid or gelatinous compound for resistance to shock and vibration, and for exclusion of moisture and corrosive agents. Thermo-setting plastics or silicone rubber gels are often used. In ], '''potting''' is a process of filling a complete electronic assembly with a solid or gelatinous compound for resistance to shock and vibration, and for exclusion of moisture and corrosive agents. Thermo-setting plastics or silicone rubber gels are often used. Many sites recommend using silicone or epoxy to protect from impact and loose wires. <ref></ref>


Most circuit board assembly houses coat assemblies with a layer of transparent ] rather than potting.<ref>http://ww1.microchip.com/downloads/en/AppNotes/01288A.pdf</ref> Conformal coating gives most of the benefits of potting, and is lighter and easier to inspect, test, and repair. Most circuit board assembly houses coat assemblies with a layer of transparent ] rather than potting.<ref>http://ww1.microchip.com/downloads/en/AppNotes/01288A.pdf</ref> Conformal coating gives most of the benefits of potting, and is lighter and easier to inspect, test, and repair.

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A small transformer potted in epoxy. The surface visible on the right is formed by the potting compound that has been poured into the plastic box

In electronics, potting is a process of filling a complete electronic assembly with a solid or gelatinous compound for resistance to shock and vibration, and for exclusion of moisture and corrosive agents. Thermo-setting plastics or silicone rubber gels are often used. Many sites recommend using silicone or epoxy to protect from impact and loose wires.

Most circuit board assembly houses coat assemblies with a layer of transparent conformal coating rather than potting. Conformal coating gives most of the benefits of potting, and is lighter and easier to inspect, test, and repair.

When potting a circuit board that uses surface-mount technology, low glass transition temperature (Tg) potting compounds such as polyurethane or silicone are used, because high Tg potting compounds may break solder bonds as they harden and shrink at low temperatures.

See also

References

  1. Hackaday
  2. http://ww1.microchip.com/downloads/en/AppNotes/01288A.pdf
  3. http://www.pottingsolutions.com/my%20site/Technology/potting_hints.htm#Potting%20PC%20boards

External links


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