Parylene Coating Blog by Diamond-MT

Properties of Acrylic Conformal Coating

Posted by Sean Horn on Fri, Feb 16, 2018 @ 08:11 AM

Exceptionally user-friendly, liquid acrylic resin (AR) conformal coatings protect printed circuit boards (PCBs) and similar electronics from corrosion, dirt/dust, fungus, moisture, and thermal shocks. AR’s ease of application contributes to its status as the most frequently used conformal material.

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Tags: conformal coating properties

Aerospace Conformal Coatings

Posted by Sean Horn on Fri, Feb 09, 2018 @ 08:05 AM

Conformal coatings composed of acrylic, silicone and parylene polymer materials are valuable for a wide range of aerospace applications, which can push technologies to their limits. Applied to printed circuit boards (PCBs) and related electrical assemblies, conformal coatings maintain device performance through difficult operational conditions. The presence of atmospheric variation, chemicals, humidity, mobile ion permeation, moisture, temperature fluctuation, or excessive vibration can generate:

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Tags: acrylic conformal coating, parylene for aerospace, conformal coating applications

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

Different Coatings for Electronics

Posted by Sean Horn on Fri, Jan 26, 2018 @ 07:18 AM

The value of polymeric conformal coatings for protecting printed circuit boards (PCBs) from functional retardants like dust, corrosion, moisture, and temperature fluctuations is well-known. What may be less known is, that as the electrical components used in PCBs become smaller, traditional conformal films are commensurately less effective for certain coating purposes. With the rise of microelectricalmechanical systems (MEMS) and nano technology, nanocoats are increasing in prominence, in many cases surpassing even micro-thin parylene not-liquid coatings in utility for MEMS/nano applications.

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Tags: parylene, nano coating

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