Parylene Coating Blog by Diamond-MT

Conformal Coating Selection

Posted by Sean Horn on Thu, Jul 25, 2013 @ 02:23 PM

Conformal Coating Selection: Weighing the Pros and Cons for Your Application

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Tags: acrylic conformal coating, parylene conformal coating, conformal coating, silicone conformal coating, urethane conformal coating, epoxy conformal coating

Acrylic vs Urethane Conformal Coating

Posted by Sean Horn on Tue, Apr 02, 2013 @ 08:29 AM

Acrylic and urethane conformal coating are widely used conformal coatings.  While they share the same methods of applications and ultimate end item uses, there are some differences that should be addressed prior to deciding what conformal coating is the best for your project.

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Tags: acrylic conformal coating, HumiSeal 1B31, urethane conformal coating, MG Chemicals, HumiSeal, Humiseal 1A33

Parylene Alternatives

Posted by Sean Horn on Fri, Jan 18, 2013 @ 08:43 AM

Parylene conformal coating is a very robust coating, but sometimes it is not the right fit for a customer’s application for one reason or another.  The entire conformal coating process is based on first identifying the standards to be used and customer’s protection desired.  It would therefore only make sense that there are alternatives to parylene for different conformal coating demands.

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Tags: acrylic conformal coating, parylene, parylene conformal coating, conformal coating, silicone conformal coating, urethane conformal coating

Silicone vs. Urethane Conformal Coating

Posted by Sean Horn on Fri, Oct 12, 2012 @ 11:07 AM

Silicone and urethane are two of the most popular conformal coating types.  They are widely used for a variety of their properties, but which is a better coating?  While this ultimately depends on your application, let’s take a look at some of the pros and cons of each.

Silicone Conformal Coating

Benefits

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Tags: conformal coating, silicone conformal coating, tin whisker mitigation, urethane conformal coating, type sr conformal coating, Humiseal 1A33, type ur conformal coating, conformal coating consultation

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.

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Tags: conformal coating, conformal coatings, urethane conformal coating, MG Chemicals, conformal coating types, HumiSeal, Humiseal 1A33, type ur conformal coating

Will HumiSeal 1B31 mitigate tin whiskers?

Posted by Sean Horn on Tue, Sep 04, 2012 @ 01:20 PM

Tin whiskers are electrically conductive, crystalline structures of tin that sometimes grow from surfaces where tin (especially electroplated tin) is used as a final finish.  They typically grow from lengths of 1-2 millimeters (mm) but have been observed to lengths in excess of 10 mm.  They are a serious issue in the electronics world because they have been known to cause short circuits between circuit elements. 

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Tags: acrylic conformal coating, conformal coating, conformal coatings, HumiSeal 1B31, tin whiskers, tin whisker mitigation, urethane conformal coating

Using Conformal Coating to Prevent Reverse Engineering

Posted by Sean Horn on Tue, Aug 07, 2012 @ 12:54 PM

Conformal Coatings are used regularly in an attempt to cover technology designs on printed circuit boards (PCBs). Normally, this is done by using a pigmented (coloured) conformal coating which obscures the components below the conformal coating material.

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Tags: conformal coating, conformal coatings, urethane conformal coating, conformal coating removal, Nexus3C, epoxy conformal coating, reverse engineering

Urethane conformal coating: When not to use

Posted by Sean Horn on Fri, Jul 27, 2012 @ 08:35 AM

Urethane conformal coating is becoming an increasingly popular conformal coating choice.  However, it is not suitable for all applications.  Instances where the product is going into a high vibration environment or has a high heat requirement would not ideal candidates for urethane conformal coatings. 

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Tags: parylene conformal coating, conformal coating, silicone conformal coating, urethane conformal coating, Humiseal 1A33

When Not to Use Acrylic Conformal Coating

Posted by Sean Horn on Wed, May 16, 2012 @ 07:52 AM

While acrylic conformal coating does have its many benefits, there are some applications whenever it is not the ideal conformal coating  to be using.  Typically in applications that have exposure to solvents, high temperature requirements, or require coating hardness, acrylic conformal coating should not be used.

 Solvent exposure

 In applications that have an exposure to solvents, acrylic conformal coating is not the best choice.  Acrylic conformal coating can be removed with a weaker solvent such as isopropyl alcohol or xylene.  Whenever it faces even stronger solvents, it will not offer the protection that is needed, especially if your product is a mission critical device.  Other coatings, such as urethane or parylene conformal coating have a far better resistance to solvents than acrylics.

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Tags: acrylic conformal coating, parylene conformal coating, conformal coating, silicone conformal coating, conformal coatings, HumiSeal 1B31, urethane conformal coating, HumiSeal, epoxy conformal coating

When to Use Urethane Conformal Coating

Posted by Sean Horn on Tue, May 08, 2012 @ 06:46 AM

Urethane conformal coatings are an excellent choice to use for many conformal coatingprojects.  Because of their resistance to chemical solvents, usefulness at mitigating tin whiskers, and overall hardness, they are a very popular conformal coating choice.
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Tags: parylene conformal coating, conformal coating, conformal coatings, tin whiskers, tin whisker mitigation, urethane conformal coating, urethane resin