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Rafael Hernandez

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How to Save Time & Money Measuring the Right Amount of Viscosity

The conformal coating process, like any other processes, has different variables, inputs, and outputs. In order to be able to control the results of your application (outputs), we need to fully understand how each variable affects the process. 

The importance of the variables

To get the right amount of liquid, thickness, right coverage, no contamination on keep out areas, etc., you need to...

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The Importance of Air Quality in Conformal Coating Process

One of the basic components used in most automatic or semi-automatic conformal coating processes is compressed air.  Pressurized air moves the liquid coating from the tank, through the hoses and the valves onto the PCB.  Since the pressurized air makes direct contact with the conformal coating, there are critical properties that must be taken into consideration, especially with moisture...

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An Effortless Approach to Eliminate Bubbles in Conformal Coating Through Solvent Type and Product Selection

Hello Again!  The last time we discussed bubbles in conformal coating, I wrote how to resolve process related root causes.  There are other simple ways to reduce the amount of bubbles:

  • by varying the types of solvents used in a product
  • by using a product that contains a surface tension modifier, hence increasing the rate at which bubbles burst.

If you recall, most of the bubbles are...

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Simple Techniques to Avoid Bubbles in Conformal Coating

"Have you ever experienced air entrapment in your conformal coating?  We would like to offer some assistance to help you to get rid of those exasperating bubbles in the conformal coating process.

Contrary to what most people think bubbles are not material related, bubbles are mostly caused by process related issues.  Yes, it is true that the conformal coating contents would influence in having...

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