Parylene Coating Blog by Diamond-MT

Conformal Coating Applications: Liquid vs Parylene

Posted by Sean Horn on Fri, Jan 19, 2018 @ 07:10 AM

Conformal coating of an object occurs when an appropriate coating material is applied on-top and around an underlying substrate, to protect it from such environmental and performance concerns as chemical incursion and excess moisture. Liquid organic polymer conformal coatings – acrylic, epoxy, silicone and urethane – prevent:

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Tags: parylene applications, conformal coating applications

How to Mask for Conformal Coating

Posted by Sean Horn on Fri, Jan 12, 2018 @ 07:25 AM

Liquid conformal coatings provide inexpensive, easily-applied insulative protection for printed circuit boards (PCBs) and similar electronics. However, the films’ otherwise desirable insulative qualities can interfere with operation of the assemblies’ electrical components, items like capacitors, connectors, diodes, resistors, or transistors, if these are coated. Liquid coatings are designed to "wick" under components and in between connectors to provide a complete coat, through brushing, dip-immersion, or spraying. These methods work exceptionally well, rendering an overall, dielectric conformal film for the PCB.

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Tags: conformal coating, conformal coating masking, masking boots

Ruggedization and Conformal Coating

Posted by Sean Horn on Fri, Jan 05, 2018 @ 07:35 AM

Conformal coatings are non-conductive dielectric film-coverings applied over printed circuit boards (PCBs) to protect them from damage caused by chemical incursion, corrosion, current-leakage, dirt/dust, extreme temperatures, fungus, moisture, rain, salt-spray, wind and persistent, intensive vibrations both within and external to the device. These failure mechanisms can soon lead to PCB malfunction and eventual breakdown. Rugged coatings’ exceptional performance durability and versatility protect delicate, finely-tuned components.

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Tags: acrylic conformal coating, parylene, parylene conformal coating, rugged electronics, ruggedization

Best Coating for Dielectric Strength

Posted by Sean Horn on Fri, Dec 22, 2017 @ 08:00 AM

Dielectric strength is a measurement of a conformal coating’s insulation effectiveness. The higher the numerical designation of strength, the more likely a coating is to resist dielectric breakdown -- a level of 7,000 is dielectrically stronger than 2,200. Conformal coatings with higher hydrophobic properties and lower extractible ionic impurities are less likely to attract water, rendering them less mobile, while enhancing existing dielectric strength

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Tags: parylene properties, conformal coating properties, dielectric strength

Automotive Conformal Coatings

Posted by Sean Horn on Fri, Dec 15, 2017 @ 08:00 AM

Long used to safeguard printed circuit boards (PCBs) and other essential automotive electronics from harsh operating environments, conformal coatings’ importance in auto-design/manufacture has never been greater. Fragile electronic components and the paths between them require protection for PCBs to perform reliably. Conforming to PCBs’ topographies, coatings insulate assembly components, safeguarding specialized electronics’ functional integrity through extreme operating conditions.

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Tags: parylene, silicone conformal coating, Automotive conformal coatings

Epoxy Conformal Coatings

Posted by Sean Horn on Fri, Dec 08, 2017 @ 08:00 AM

Selecting a suitable conformal material for coating printed circuit boards (PCBs), related electronics, or other devices requires recognition of each coating type’s unique combination of benefits and drawbacks. These must be considered in relation to a given application.

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Tags: conformal coatings, coating comparison, expoxy conformal coatings

Paralene, Paralyne, or Parylene: Correctly Spelling and Using This Superior Conformal Coating

Posted by Sean Horn on Fri, Dec 01, 2017 @ 08:01 AM

Accidentally discovered in 1947, by chemist Michael Szwarc, the polymer parylene originally bore his name, and was known for a brief period known as Szwarcite. Working to thermally decompose the solvent p-xylene at temperatures exceeding 1000 °C, Szwarc identified the monomer para-xylylene di-iodide as the only product resulting when para-xylylene was reacted with iodine.

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Tags: parylene, parylene process, parylene deposition, parylene C

Military Conformal Coatings

Posted by Sean Horn on Fri, Nov 24, 2017 @ 09:00 AM

 

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Tags: acrylic conformal coating, parylene, urethane conformal coating, rugged electronics, COTS, ruggedization, military electronics

Best Electronics Coatings

Posted by Sean Horn on Fri, Nov 17, 2017 @ 08:01 AM

Available in five basic material types, conformal coatings can be readily adapted as protective, insulating films for electronics. However, there can be some confusion about which type is best-suited for a specific use. Clearly defining the performance parameters for the component[s] to-be-coated helps coordinate the conformal film material with a unit’s functional requirements. Accurate assessment of environmental conditions like anticipated levels of corrosion, contact with foreign particulates, expected concentrations of moisture/salt spray, temperature fluctuations and vibrational range determine which coating type is best-suited to your electronics’ applications. Without appropriate protection, printed circuit boards (PCBs) and similar electronics will not survive harsh environments, and malfunction.

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Tags: acrylic conformal coating, parylene, silicone conformal coating, urethane conformal coating, rugged electronics, electronics, epoxy conformal coating, ruggedization, conformal coating selection, electronic conformal coatings

Is Parylene a Conformal Coating?

Posted by Sean Horn on Fri, Nov 10, 2017 @ 08:06 AM

If, for some reason, you are told parylene is NOT a conformal coating, simply because it has no liquid phase of application, just walk away. And maybe have yourself a good laugh. For, as you may already know, parylene has repeatedly proven itself to be the most definitive of conformal coatings, for a variety of reasons, including:

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Tags: parylene, conformal coatings, conformal coating selection