Parylene Coating Blog by Diamond-MT

Conformal Coatings for Electronics

Posted by Sean Horn on Fri, Aug 11, 2017 @ 07:41 AM

Withstanding such complications to the operational environment as corrosion, fungus, oxidation, rain, salt water/mist, snow, temperature fluctuations or vibration is essential to long-term performance of electronic devices. Without suitable protection, printed circuit boards (PCBs) and similar electronics will not survive harsh environments, and malfunction. Prominent examples include:

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Tags: conformal coating, conformal coating types, conformal coating selection, electronic conformal coatings

How to Choose Between Potting and Conformal Coating

Posted by Sean Horn on Fri, Oct 14, 2016 @ 07:31 AM

            Protection of printed circuit boards (PCBs) is most often achieved with either potting or conformal coating.  The selection of which method to use depends upon the PCB’s purpose and how much protection it requires.  Potting offers the strongest shielding barrier, but is also affected by a range of operational disadvantages that can offset its functional benefits.  Conformal coatings generate reliable barrier protection, which frequently circumvent the problems inherent in potting.  This is particularly the case with parylene, a non-liquid conformal coating. 

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Tags: parylene, conformal coating, potting, conformal coating types

Type UR conformal coating examples

Posted by Sean Horn on Fri, Sep 07, 2012 @ 09:39 AM

Type UR (urethane resin) conformal coatings are a popular choice for conformal coating projects because of their resistance to chemical solvents, hardness, and moisture protection.  There are many different varieties of type UR conformal coatings such as:
  • HumiSeal 1A33
  • HumiSeal 1A20
  • Humiseal 1A27
  • Humiseal 2A64
  • HumiSeal 1A34
  • Hysol PC18M
  • CONATHANE CE-1155-35
  • CONAP CE-1170
  • CONATHANE CE-1164
  • Techspray Fine-L-Kote
  • MG Chemicals 4223
  • Electrolube PUC

You should consider using type ur conformal coating whenever your application has any issues with chemical resistivity as type ur coatings are very resistant to chemical solvents.  Type ur conformal coating is also smart to include in any tin whisker mitigation strategy, as NASA studies have shown that urethane conformal coatings are one of the few ways to successfully mitigate tin whisker growth.  Finally, applications that can see any direct mechanical wear against the coating should consider urethane conformal coatings as well.

Download our guide on Urethane Resins
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Tags: conformal coating, conformal coatings, urethane conformal coating, MG Chemicals, conformal coating types, HumiSeal, Humiseal 1A33, type ur conformal coating

Conformal Coating Rework and Repair

Posted by Sean Horn on Mon, Aug 20, 2012 @ 09:15 AM

Stripping or removal of unwanted conformal coating from a printed circuit board (PCB) can be a relatively simple process or a very messy difficult job. It does depend on several factors including the type of conformal coating you need to remove, where the coating is found and the type of components on the board.

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Tags: conformal coating, conformal coatings, conformal coating equipment, conformal coating removal, conformal coating rework, conformal coating types