Parylene Coating Blog by Diamond-MT

Managing the Conformal Coating Process

Posted by Sean Horn on Fri, Jun 09, 2017 @ 07:47 AM

Managing the conformal coating process begins with a precise definition of coverage required.  Pre-process negotiations between the client, the coating provider, and end-user, clarify coating requirements.  They include agreement about whether:

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Tags: conformal coating, conformal coatings, conformal coating process, conformal coating methods

All about the Conformal Coating Process

Posted by Sean Horn on Fri, Jun 02, 2017 @ 07:40 AM

Liquid application resins acrylic, epoxy, silicone and urethane are applied to electronic circuitry in a liquid format by brush, dip or spray techniques, either manually or through robotic processes; they require curing before they can be used. 

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Tags: conformal coating, conformal coatings, conformal coating process, conformal coating masking, conformal coating methods

Solvent Use in Parylene Deposition

Posted by Sean Horn on Fri, May 26, 2017 @ 07:32 AM

For various reasons, even people familiar with the variety of existing conformal coatings, their strengths, weaknesses and respective use often assume that the chemical vapor deposition (CVD) process used for parylene films incorporates a solvent, as an integral component of the procedure.  This is false, for the reasons detailed below.

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Tags: parylene, parylene process, conformal coating solvents, solvents

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

Solvent Resistance of Parylene

Posted by Sean Horn on Fri, May 12, 2017 @ 07:25 AM

The parylene variants are resistant to solvents and protect substrates solvents.  This high level of security is maintained through temperatures of 150° C, seldom encountered in the actual use of PCBs or related electronics.  These properties are largely a development of the unique molecular structure of parylene polymers, rendering them:

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Tags: parylene, parylene properties, conformal coating solvents, solvents

Ruggedizing UAV Electronics with Parylene

Posted by Sean Horn on Fri, May 05, 2017 @ 07:37 AM

The acronym UAV stands for an unmanned aerial vehicle, an aircraft piloted by remote control or onboard computers.  UAVs are an integral element of America’s unmanned aircraft system (UAS), consisting of three basic components:

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Tags: parylene, rugged electronics, COTS, ruggedization, military electronics

Protecting Solar Panel Electronics with Parylene

Posted by Sean Horn on Fri, Apr 28, 2017 @ 07:36 AM

Like any other renewable energy technology, electronics for solar (photovoltaic) panels are necessary for transforming, transmitting, and monitoring the system.  Unfortunately, system electronics can be fragile, and frequently are the panel’s weakest link.  Converting the sun’s light to electricity, solar panels have demonstrated their utility in numerous operational contexts.  The basic operational unit of panels, the solar cells themselves, can be used to power small scale products like calculators, re-chargeable batteries or watches; full panels can be adapted to a range of larger level operations, like powering homes, lighting systems or water treatment plants.

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Tags: parylene, parylene applications, parylene solar panels

Repairing Parylene Delamination

Posted by Sean Horn on Fri, Apr 21, 2017 @ 07:37 AM

Applied as a conformal coating through a unique chemical vapor deposition (CVD) process, parylene provides micron-thin, resilient barrier protection for an exceptional range of electrical assemblies.  In comparison to liquid coatings -- acrylic, epoxy, silicon, urethane -- parylene is the coating-of-choice for protecting printed circuits boards (PCBs) and medical devices.  It’s films negate the impact of gravity and surface tension during the coating process; . 

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Tags: parylene, parylene adhesion, parylene disadvantages, parylene delamination, parylene issues

Batch Size Considerations for Parylene Production

Posted by Sean Horn on Fri, Apr 14, 2017 @ 07:35 AM

The parylenes consist of a range of para-xylylene polymers whose desirable physical and electrical properties support expansive utilization as conformal coatings for electronic and medical devices  Parylene films are applied to substrates via a chemical vapor deposition (CVD) process, which deposits monomeric parylene vapor homogeneously and deeply into the surface of printed circuit boards (PCBs) and related assemblies/components. 

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Tags: parylene, parylene process, parylene deposition, parylene disadvantages

Cost of Parylene Dimer

Posted by Sean Horn on Fri, Apr 07, 2017 @ 07:32 AM

Perhaps the most reliable of the conformal coatings, parylene (para-xylylene di-iodide) is also one of the more expensive coating options.  Production costs typically encompass three primary expense categories -- raw materials, labor, and lot volume.  Of the three, labor expenses are generally the most costly, but raw materials can add significantly to production overhead; materials’ costs can be largely attributed to the raw parylene dimer required to make conformal coatings.   

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Tags: parylene, parylene dimer, parylene C, parylene n, parylene af-4