Diamond-MT's Blog

Ruggedizing COTS Electronics with Parylene

Posted by Sean Horn on Fri, Aug 26, 2016 @ 07:30 AM

Parylene Coatings and COTS Electronics

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Tags: parylene, rugged electronics, COTS, ruggedization

How to Measure Conformal Coating Thickness

Posted by Sean Horn on Fri, Aug 19, 2016 @ 07:30 AM

Methods for Measuring Conformal Coating Thickness

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Tags: conformal coating, conformal coating thickness, conformal coating specifications

Is Parylene Safe?

Posted by Sean Horn on Fri, Aug 12, 2016 @ 07:30 AM

Application of parylene’s xylylene monomer employs a chemical vapor deposition (CVD) process implemented under a vacuum.  Unlike wet coating application methods – brushing, dipping, spraying, etc. – parylene CVD is not line-of-sight.  Because the vaporous monomer envelopes all sides of the assembly being coated, appropriate process control allows vacuum deposition of an entirely conformal coating, one that penetrates deep into any crevices, rivulets, or sharp edges and points that exist on the assembly’s surface.  The resultant parylene film is insulating, ultra-thin, and pinhole-free, exhibiting superior protective barrier qualities and very low moisture permeability.

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Tags: parylene, parylene deposition, parylene uniformity, medical parylene, medical device coating, parylene safety

Five Common Causes of Parylene Failure

Posted by Sean Horn on Fri, Aug 05, 2016 @ 08:00 AM

Parylene Conformal Coatings

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Tags: parylene, parylene adhesion, parylene disadvantages, medical device coating, parylene delamination, parylene issues

How to Estimate Parylene Coating Costs

Posted by Sean Horn on Fri, Jul 29, 2016 @ 07:30 AM

Often considered the ultimate conformal coating, Parylene is well suited to protect many types of products and devices.

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Tags: parylene, parylene cost, parylene process, parylene price

NADCAP Specifications for Conformal Coatings

Posted by Sean Horn on Fri, Jul 22, 2016 @ 07:30 AM

  The National Aerospace and Defense Contractors Accreditation Program

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Tags: conformal coatings, nadcap conformal coating, conformal coating specifications

Common Parylene Problems

Posted by Sean Horn on Fri, Jul 15, 2016 @ 07:30 AM

In addition to cracking, a range of associated issues may interfere with successful coating of parylene films.  Because it is applied via CVD, parylene generates a structurally continuous film covering a PCB or similar assembly.  In CVD, the interaction of vapor-phase chemical reactants formulate a non-volatile solid film on a substrate, useful for a variety of applications like corrosion resistance, erosion defense, and high temperature protection. 

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Tags: parylene, parylene process, parylene rework, parylene disadvantages, parylene issues

What Is the Price of Parylene Conformal Coating?

Posted by Sean Horn on Fri, Jul 08, 2016 @ 07:30 AM

Parylene is often considered the ultimate conformal coating for the protection of devices, components, and surfaces in the electronics, instrumentation, aerospace, medical, and engineering industries.

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Tags: parylene, parylene cost, parylene process, parylene dimer, parylene price

NASA Certified and Similarly Rated Conformal Coating Companies

Posted by Sean Horn on Fri, Jul 01, 2016 @ 07:30 AM

NASA certification is essential to aerospace conformal coating applications, and thus is sought after by many firms in the industry.  In addition to 8739.1, other NASA standards, such as ASTM E595 – a test developed by NASA to determine levels of coatings’ volatile content, appropriately screening low outgassing materials for use in space – are inspection and performance parameters applicable to aerospace uses. 

The AS9100/9120 and ISO9001 qualification are international aerospace standards for quality assurance, development, production, installation, and servicing also relevant to quality workmanship for aerospace products and the firms that manufacture them; equally relevant are IPC-CC-830 and IPC--A-610 classifications, from the Association Connecting Electronics Industries, often considered equivalent to NASA 8739.1 for aerospace conformal coatings.  Nadcap’s AC7120 Rev A - Nadcap Audit Criteria for Circuit Card Assemblies is also applicable. 

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Tags: NASA conformal coating, NASA-STD 8739.1A, conformal coating companies

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