Parylene Coating Blog by Diamond-MT

Sterlization of Parylene

Posted by Sean Horn on Tue, Jan 06, 2015 @ 08:19 AM

Regardless of the variant, Parylene in general garners a great deal of praise for the many advantages it offers as a protective conformal coating for applications as varied as medical, aerospace, defense, LEDs, and automotive. Chief among the coating’s benefits, however, is that it can withstand common sterilization techniques, such as electron beam (e-beam), gamma, ethylene oxide (EtO), and autoclave.

Like many chemicals, para-xylylene actually comes in several common variants:

  • N. The most basic type of the compound is highly elastic and, as such, is very good at penetrating small areas on components.
  • C. The C variant of the chemical replaces one aromatic hydrogen component with a chlorine atom. It is less elastic and is extremely popular in medical applications, in part due to its high degree of moisture resistance.
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Parylene for Industrial MEMS

Posted by Sean Horn on Thu, Oct 02, 2014 @ 01:42 PM

For contemporary industrial uses, sensors collect and respond to analog information, transforming it to a digital format.  Sensor design for many uses has increasingly relied on microelectromechanical systems (MEMS) technology.  MEMS are semiconductor-made micro-mechanisms, which typically work by deflecting optical signals from input-to-output fibers by deploying movable micro-mirrors.  They demonstrate virtually unlimited potential for an exceptional range of rapidly evolving products for information technology (IT), telecommunications, consumer electronics and automotive engines, among many other purposes.  

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Parylene and Ruggedization

Posted by Sean Horn on Tue, Jul 29, 2014 @ 08:25 AM

Ruggedized products are conceived for use in severe conditions, environments where excessive moisture or dryness, extreme temperatures, high levels of vibration, wind, or lack of atmosphere are the rule.   Internal components of these specialized products require the same degree of ruggedization as exteriors. 

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Tags: parylene, parylene conformal coating, rugged electronics

Parylene Removal, Rework, and Repair

Posted by Sean Horn on Wed, Jul 16, 2014 @ 10:03 AM

Parylene's benefits as a conformal coating are well known. It resists heat, cold, moisture, and pressure; salt spray, electricity, and solvents can't permeate it. And while these attributes of parylene contribute to the conformal coating's appeal, they also present distinct challenges, particularly in regards to parylene removal, rework, and repair.

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Parylene: Protecting Life-Enhancing Medical MEMS Technologies

Posted by Sean Horn on Wed, Jan 15, 2014 @ 11:07 AM

Driving development of such emerging areas as microfluidics, advanced bio-sensing, capsule endoscopy, and personalized medicine, microelectromechanical systems (MEMS) are enabling an array of breakthroughs that promise to enhance patient care and outcomes.  Protecting sensitive MEMS products from the harsh conditions both inside the body and out is Parylene conformal coating, which is helping to bring these futuristic technologies to fruition.

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Tags: parylene, Medical conformal coatings, medical parylene, Parylene and MEMS

5 Key Properties of Parylene

Posted by Sean Horn on Tue, Jan 07, 2014 @ 09:42 AM

Since its discovery in the 1940s, Parylene has skyrocketed to prominence as an ideal conformal coating choice for a range of applications. Given its unique blend of properties, it might seem like an unparalleled conformal coating option. In many ways, it is. Here are five key properties of Parylene that differentiate it from the rest.

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Parylene: Protecting MEMS in the Military

Posted by Sean Horn on Mon, Dec 23, 2013 @ 01:47 PM

Offering sensitivity and performance in a compact package, microelectromechanical systems (MEMS) have become increasingly prevalent in U.S. military applications over the last few decades and are enabling significant technological advances. As with all things military, however, robust protection of these sensitive electronics is imperative in order to ensure that they can withstand the harsh conditions often found on the battlefield. Conformal coatings such as Parylene can help MEMS-based military technologies withstand conditions such as extreme temperatures, humidity, dust/dirt, chemicals, and rugged terrain.

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Tags: parylene, Parylene and MEMS, parylene applications

Parylene Adhesion to Noble Metals

Posted by Sean Horn on Wed, Dec 04, 2013 @ 05:17 PM

Parylene adhesion can be tricky to manage. Unlike other coatings that adhere to the surfaces they coat, parylene sticks to itself. This can cause trouble when it needs to be applied to smooth surfaces, like areas made of stainless steel or noble metals like gold or silver. However, since parylene has so many other advantages, it's worth looking into methods to improve adhesion. You can use the product; you just might need an extra step.

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Parylene and Tin Whiskers

Posted by Sean Horn on Tue, Nov 26, 2013 @ 08:50 AM

Tin whiskers have long been a frustrating occurrence for those manufacturing and using electronic devices. First discovered in the 1940s, the whiskering of metal has been the cause of serious problems including the damaging of vital and difficult to replace equipment. Finding ways to prevent or slow the growth of whiskers has been a focus of engineers and scientists for quite some time.

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Parylene: Making a Difference Across Many Markets

Posted by Sean Horn on Fri, Nov 22, 2013 @ 08:36 AM

Parylene conformal coatings are used in many different industries. With their hardness, chemical inertness and ability to perfectly coat any surface, they have expanded well beyond their original military and aerospace applications. Whether it's a protective coating for an LED or a protective shell around a coronary artery stent, the compound is found in places where you might not expect to find it.

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Tags: parylene, medical parylene, parylene for LEDs