Parylene Coating Blog by Diamond-MT

Conformal Coating for Agricultural Lighting

Posted by Sean Horn on Fri, Dec 14, 2018 @ 07:30 AM

Used for food production, indoor gardening/hydroponics, and horticulture, grow lights have both industrial and consumer applications.  Because total illumination intensity diminishes with distance from the point source (grow lightbulbs), production efficiency is enhanced by:

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Tags: silicone conformal coating, LED conformal coating, parylene for LEDs, agricultural lighting coating

Conformal Coating Types: Acrylic, Urethane, Silicone, and Parylene

Posted by Sean Horn on Fri, Feb 02, 2018 @ 07:33 AM

Used for aerospace. automotive, commercial, defense, industrial and medical applications, conformal coatings are applied in film layers generally 30-130 microns (micrometers/μm) thick, or 0.0012-0.0051 inches (“). Conformal films’ exceptional thinness is their greatest asset. Coatings safeguard printed circuit boards (PCBs) and similar electronics from performance malfunction generated by unwanted contact with:

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

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

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

How to Remove Conformal Coatings

Posted by Sean Horn on Fri, Aug 18, 2017 @ 07:30 AM

Appropriately selected and applied, conformal coatings provide essential working protection for printed circuit boards (PCBs). However, removal of conformal coatings is necessary if the wrong coating material is selected relative to the PCB’s functional requirements, inadequately supporting its operating environment. Poor coating application can trigger failure mechanisms within the assembly, also calling for its removal and re-application.

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

Conformal Coating for PCB's

Posted by Sean Horn on Fri, Jul 21, 2017 @ 07:47 AM

Printed circuit boards (PCBs) electrically connect and power all but the simplest electronic products.  To function as designed, PCBs and their components – capacitors, resistors, etc. – require protection against operating problems caused by corrosive liquids, dust, physical shock, temperature extremes and, in the case of medical implants, bodily fluids.  Conformal coatings are applied over PCBs to safeguard mechanisms and maintain functionality.  

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

Which Conformal Coating Is Right for Me?

Posted by Sean Horn on Fri, May 19, 2017 @ 07:30 AM

          The value of polymeric conformal coatings for protecting printed circuit boards (PCBs) from functional retardants like dust, corrosion, moisture, and temperature fluctuations has been well-documented.  Conforming to the physical configurations of the exposed face of the PCB, conformal coating:

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

Parylene and Silicone Conformal Coatings:  A Comparison

Posted by Sean Horn on Fri, Jun 24, 2016 @ 07:30 AM

One liquid coating type that rivals the use of parylene is silicone conformal coating (Type SR), which cures rapidly, is reliably dielectric and displays exceptional stability across a wide temperature range.  These properties make it parylene’s chief performance competitor, for many purposes.  Further comparison delineates their benefits and disadvantages relative to each other.

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Tags: parylene, silicone conformal coating, type xy, type sr conformal coating

Benefits of Conformal Coating

Posted by Sean Horn on Fri, Jan 08, 2016 @ 08:07 AM

Electronics manufacturers need devices that withstand heat, cold, rain, snow, vibration, fungus, oxidation, and corrosion through decades of operation.

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

Silicone Conformal Coating vs Parylene

Posted by Sean Horn on Fri, Aug 07, 2015 @ 09:46 AM

Silicone and Parylene conformal coatings are a lot like humans and dogs. At first glance, we are very different from our canine friends. However, we have a lot in common -- noses, two eyes, hearts, dreams. In fact, we share 84 percent of our DNA with Rover (or Spot). So too with the two coatings. While both have some functional differences -- which we'll explore here -- they also have an important similarity. Parylene and Silicone are both some of the best choices for conformal coatings of your company's products.

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Tags: parylene, parylene deposition, silicone conformal coating

Best Conformal Coating for Humid Environments

Posted by Sean Horn on Fri, Apr 10, 2015 @ 08:43 AM

Just about every major type of conformal coating provides protection against moisture. If you get a printed circuit board coated with epoxy, acrylic, urethane, silicone or parylene wet, typically all that you have to do is wipe it off. Environments with high humidity pose a different set of challenges. Because moisture is omnipresent in humid environments, the conformal coating doesn't just have to resist water ingress. It also needs to completely seal the coated item. Given this additional requirement, the best choice will usually be either silicone or parylene.

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Tags: parylene, conformal coating, silicone conformal coating

Conformal Coatings for LED Applications

Posted by Sean Horn on Wed, Oct 30, 2013 @ 07:58 AM

From front to back, LEDs are improved by conformal coatings. Whether the coating is improving the LED's color accuracy, protecting it from damage or keeping the electronics functioning well, conformal coating of LED electronics extends the suitability of LED technology. Here are the top six ways that conformal coating and LEDs go well together

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Tags: parylene, silicone conformal coating, parylene for LEDs

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

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

Type SR Conformal Coating Examples

Posted by Sean Horn on Tue, Jan 15, 2013 @ 01:23 PM

We have noticed a significant increase in the amount of type SR conformal coating requests recently.  Silicone conformal coating offers many benefits such as high temperature capabilities, excellent moisture protection, and easy application and re-workability. 

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Tags: silicone conformal coating, MG Chemicals, HumiSeal, type sr 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

How thick should silicone conformal coating be applied?

Posted by Sean Horn on Tue, Oct 09, 2012 @ 06:51 AM

Silicone conformal coating is quickly becoming a very popular choice for conformal coating.  Many people are asking for silicone coating because of its excellent moisture resistance, quick drying nature, and high temperature capabilities.  It is also one of the easiest conformal coatings to work with.  In order for the coating to function at its optimum level, it has to be applied at the proper thickness.

Maintaining proper thickness for silicone conformal coating is critical because it is applied very thick compared to other conformal coatings.  If a coating is applied too thick, it may create excessive stresses on solder joints and components (particularly glass-bodied components).  If a coating is applied too thin, it may not reach the optimum properties described on the Technical Data Sheet.  For this reason, the IPC created the J-STD-001 to regulate and standardize the thickness that coatings are applied at.  For silicones, the J-STD-001 calls out 0.00197 to 0.00827 in.  Our operators strive to hit between .002” and .008” for silicone applications.

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Tags: conformal coating, silicone conformal coating, conformal coating thickness, conformal coating methods, conformal coating rework, automated conformal coating robot

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

What is the right conformal coating for LEDs?

Posted by Sean Horn on Thu, Jun 21, 2012 @ 11:50 AM

Light emitting diodes (LEDs) are a huge and growing even bigger segment of the electronics industry.  LEDs are expanding into environments that demand a higher l evel of protection in order for the LED to function properly.  One way to get this level of protection is by using conformal coating.

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Tags: acrylic conformal coating, parylene, conformal coating, silicone conformal coating, LED conformal coating, conformal coating masking, parylene for LEDs

Silicone Conformal Coating offers many benefits

Posted by Sean Horn on Mon, Jun 04, 2012 @ 01:39 PM

Silicone conformal coating is becoming an increasingly popular choice for conformal coating applications.  Because of its high temperature capabilities, moisture protection, and ease of application/rework, people are strongly considering silicone coatings for their projects.

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Tags: parylene, conformal coating, silicone conformal coating, conformal coatings, Automotive conformal coatings, conformal coating rework

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

Typical Conformal Coatings Used

Posted by Sean Horn on Thu, May 10, 2012 @ 08:59 AM

Different conformal coatings have a wide range of uses throughout many different industries.  While originally founded for the electronics industry, because of the benefits of using conformal coatings, it has branched into many other fields most notably medical, automotive, and LED.

 Medical Conformal Coatings Used

 While all conformal coating types can be used for different applications, for many medical devices, parylene is the way to go.  Because parylene is biologically inert, FDA approval of parylene coated devices is well-documented. The coatings comply with USP Class VI plastics requirements and are MIL-I-46058C / IPC-CC-830B listed.  Another benefit for medical devices such as stents and catheters is that parylene is entirely conformal, meaning that component configurations with sharp edges, points, flat surfaces, crevices or exposed internal surfaces are coated uniformly without voids or pinholes.

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Tags: parylene conformal coating, parylene coating process, Diamond-MT, conformal coating, silicone conformal coating, conformal coatings, LED conformal coating, Automotive conformal coatings, Medical conformal coatings, conformal coating standards

Benefits of Conformal Coatings

Posted by Sean Horn on Mon, Apr 30, 2012 @ 08:22 AM

Whenever a potential project that could benefit from a conformal coating application is discussed, the benefits of conformal coating need to be addressed.  By looking at the benefits of each different coating, you can see which coating will be right for your project.

WHAT IS CONFORMAL COATING

Conformal coating is a protective non conductive dielectric layer that is applied to protect the assembly from damage due to contamination, salt spray, moisture, fungus, dust and corrosion caused by harsh or extreme environments.  

ARE THERE DIFFERENT TYPES OF CONFORMAL COATING?

There are 5 different mediums for conformal coating:
  • Parylene
  • Acrylic Resin
  • Urethane Resin
  • Epoxy Resin
  • Urethane Resin

WHAT ARE THE BENEFITS OF EACH TYPE OF CONFORMAL COATING?

  • Parylene (Type XY)
Parylene possesses superior chemical barrier properties, are biochemically inert, and because of the deposition process can be applied uniformly to virtually any surface and shape including: glass, metal, paper, resin, plastics, ceramics, ferrite and silicon.
  • Acrylic Resin (Type AR)
Acrylic conformal coatings are easily applied. They dry to the touch at room temperature in minutes, have desirable electrical and physical properties, and are fungus resistant.
  • Epoxy (Type ER)
Epoxy systems are usually available as “two-component” compounds. These rugged conformal coatings provide good humidity resistance and high abrasion and chemical resistance.
  • Polyurethane (Type UR)
As a group, all provide excellent humidity and chemical resistance plus outstanding dielectric properties for extended periods.
  • Silicone (Type SR)
Silicone conformal coatings are particularly useful for high temperature service, up to about 200 deg. C. They provide high humidity and corrosion resistance along with good thermal endurance.
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Tags: acrylic conformal coating, parylene conformal coating, conformal coating, silicone conformal coating, urethane conformal coating, epoxy conformal coating