Parylene Coating Blog by Diamond-MT

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

Parylene Protection of Wearable Devices

Posted by Sean Horn on Fri, Mar 31, 2017 @ 07:26 AM

Wearable devices have become familiar, ever more an integral component of everyday life, with expanded uses for many conventional activities.  Advanced med-tech -- ranging in format from external exercise monitors to implanted cardiac pumps, defibrillators and deep-brain sensors –- represent only a fraction of wearable medical devices currently applied for healthcare and treatment.  Smartphones and watches can be found everywhere; smart fabrics are used with increasing frequency for clothing and textiles.   Wearables reflect the expanding scope of the Internet of Things in most areas of human endeavor. 

          As use of wearables grows, manufacturers try to determine the optimal mix of form, function and technology that will encourage further consumer/ professional application of the devices.  In healthcare, wearables provide a range of status indicators (heart rate, physical activity levels, etc.) that monitor individual’s engagement of healthful (or unhealthy) activities.  In addition to focusing on improving their functional technology, battery life and consumer fashion, the need to safeguard wearables performance is a prominent concern.  All wearable devices are informed by technologies that need conformal protection for and from their functional environments.  Parylene films are the most appropriate choice for protection in just about every case. 

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Tags: parylene, MEMS, IoT, wearables, sensors

Parylene and Arathane 5750:  Low Outgassing Conformal Coatings

Posted by Sean Horn on Fri, Mar 17, 2017 @ 07:35 AM

Outgassing occurs when previously adsorbed or occluded gases or water vapor are released from some material.  With respect to protective conformal coatings, outgassing encompasses the discharge of gases previously confined within a high-frequency printed circuit board (PCB) or similar assembly material, often resulting in functional difficulties. 

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Tags: parylene, NASA conformal coating, NASA-STD 8739.1A, arathane 5750

Types of Parylene

Posted by Sean Horn on Fri, Mar 10, 2017 @ 07:34 AM

          Applied in a gaseous form to component surfaces through a chemical vapor deposition (CVD) process, parylene (Poly-para-xylylene) films protect printed circuit boards (PCBs) and similar electrical assemblies.  Gaseous CVD application supports efficient coating of complex component surfaces characterized by crevices, exposed internal areas, or sharp edges.  Depending on the specific use, parylene conformal coatings can be effective in the range of 0.1 - 76 microns' thickness, far finer than competing coating materials.  Equally as strong, adaptable and versatile parylene protects substrates with

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Tags: parylene, parylene C, parylene n, parylene f, parylene af-4, parylene d