Parylene Coating Blog by Diamond-MT

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

What if my Conformal Coating is Applied too Thick?

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

Coating thickness is critical to the proper functioning of your printed wiring assembly, circuit board, or electronic device.

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Tags: conformal coating, conformal coating thickness, conformal coating removal

What is type XY conformal coating?

Posted by Sean Horn on Wed, Jan 09, 2013 @ 12:04 PM

Type xy conformal coating refers to parylene conformal coating.  Parylene gets the type xy from its’ full name, para-xylylene.   It was shortened to parylene and eventually type xy so that it could be grouped with the other conformal coatings (type ar, ur, etc.).

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Tags: parylene, parylene conformal coating, parylene deposition, conformal coating thickness, type xy

What is a good thickness for acrylic conformal coating?

Posted by Sean Horn on Mon, Jan 07, 2013 @ 10:57 AM

Acrylic conformal coatings, such as MG Chemicals 419C and Humiseal 1B31 are a very popular conformal coating choice.  They are used primarily for moisture protection on printed circuit boards.  Often times, they are the cheapest conformal coating to apply because of their easy to use nature.  As a result of this, people try to apply acrylic conformal coating as a DIY project.  An issue that arises frequently is an improper thickness of coating, resulting in lackluster protection.

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Tags: acrylic conformal coating, Diamond-MT, conformal coating thickness, type ar conformal coating

How thick should silicone conformal coating be applied?

Posted by Sean Horn on Tue, Oct 09, 2012 @ 06:51 AM

Silicone conformal coating is quickly becoming a very popular choice for conformal coating.  Many people are asking for silicone coating because of its excellent moisture resistance, quick drying nature, and high temperature capabilities.  It is also one of the easiest conformal coatings to work with.  In order for the coating to function at its optimum level, it has to be applied at the proper thickness.

Maintaining proper thickness for silicone conformal coating is critical because it is applied very thick compared to other conformal coatings.  If a coating is applied too thick, it may create excessive stresses on solder joints and components (particularly glass-bodied components).  If a coating is applied too thin, it may not reach the optimum properties described on the Technical Data Sheet.  For this reason, the IPC created the J-STD-001 to regulate and standardize the thickness that coatings are applied at.  For silicones, the J-STD-001 calls out 0.00197 to 0.00827 in.  Our operators strive to hit between .002” and .008” for silicone applications.

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Tags: conformal coating, silicone conformal coating, conformal coating thickness, conformal coating methods, conformal coating rework, automated conformal coating robot

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