Parylene Coating Blog by Diamond-MT

Parylene and MEMS Technology

Posted by Sean Horn on Mon, Jun 18, 2012 @ 07:52 AM

In the past decade, the use of Parylene as a structural material in microelectromechanical systems (MEMS) devices has attracted significant attention.  Parylene C, known for its biocompatibility, is widely used in implantable medical devices.  Parylene C is also compatible with MEMS microfabrication processes.

WHAT ARE MEMS?

Microelectromechanical systems (MEMS) is the technology of very small devices; it merges at the nano-scale into nanoelectromechanical systems (NEMS) and nanotechnology.  MEMS are made up of components between 1 to 100 micrometres in size (i.e. 0.001 to 0.1 mm), and MEMS devices generally range in size from 20 micrometres (20 millionths of a metre) to a millimetre (i.e. 0.02 to 1.0 mm). They usually consist of a central unit that processes data (the microprocessor) and several components that interact with the outside such as microsensors.

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Tags: parylene, parylene conformal coating, parylene deposition, conformal coating thickness, parylene thickness, parylene C, Parylene and MEMS, MEMS

Choosing Parylene Thickness

Posted by Sean Horn on Wed, May 02, 2012 @ 04:04 PM

A question that is often brought up by customers who are new to conformal coating is what thickness to apply parylene.

One of the different factors to take into account when trying to determine the proper parylene thickness is the amount of clearance needed.  If it is a printed circuit board that is an enclosure, there usually will not be too many clearance issues.  However, in some cases, even an extra mil of coating can cause extra mechanical abrasion to the parylene which can result in damaged parylene.

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Tags: parylene, parylene conformal coating, parylene process, conformal coating, parylene thickness