Blog

5 Tips to Detect Counterfeit Conformal Coating Products*

Posted by Humiseal Editor on Feb 19, 2019 8:00:00 AM

For decades, HumiSeal products have been considered the “gold standard” in electronics protection. As a result, it is no surprise that unscrupulous chemical manufacturers have been continuously trying to profit from this reputation through the production of copycat or counterfeit products. While imitation is considered the sincerest form of flattery, the use of counterfeit materials is a serious danger to the integrity of your electronics production. 

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Topics: Conformal Coatings, counterfeit

Optimizing Conformal Coating Flow Rates to Save Time and Money

Posted by Dan Griffin on Jan 16, 2019 10:20:00 AM

In a previous blog “How to Save Time and Money by Measuring the Right Amount of Viscosity,” viscosity was described as critical to the conformal coating process. This post will cover some of the technical details related to coating flow rate and the significant potential for savings of both time and money for PCB manufacturers.

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Topics: Conformal Coating Process, conformal coating application, Humiseal Blog, Flow rates

Alternatives to Silicone Conformal Coatings Exist

Posted by Dan Griffin on Sep 19, 2018 7:00:00 AM

For many electronics manufacturers, the original justification for specifying a silicone coating is lost deep within the mists of time and it may be time for a re-evaluation and consideration of the question,

“Do we really need a silicone conformal coating?”

Humiseal® remains in a uniquely qualified position to help you answer this question. Unlike many coatings sources, Humiseal offers a full line of all the major conformal coating technologies including acrylics, urethanes, synthetic rubbers, water-borne, and yes; silicones. As a result, you can be certain of an unbiased approach to product evaluation that will result in the most cost-efficient material to meet your needs.

There are a number of factors to consider when evaluating your application to answer whether there is really a need for silicone technology:

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Topics: silicone conformal coating, Conformal Coatings

Ruggedization of Electronic Circuits? Encapsulation is One of The Best-kept Protection Secrets

Posted by Vlad David on Jul 12, 2018 12:00:00 PM

While conformal coatings increase the lifetime of electronic devices by providing a thin barrier that strengthens their ability to withstand harsh environmental conditions, adhesives and encapsulants provide a significantly higher level of protection on the entire assembly.

The most common properties of adhesives and encapsulants include:

  • creating environmental seals that protect against moisture and corrosion,
  • providing high-temperature resistance,
  • increasing shock and vibration dampening,
  • generating strong bonds to a variety of substrates,
  • maintaining low shrinkage, and
  • offering thermal conductivity.
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Topics: Electronic Protection, Adhesive Solutions, Vibration Suppression, Encapsulants

4 Tips to Successfully Apply Two-Component Epoxy Adhesives

Posted by Albert Hernandez on Jun 25, 2018 2:14:00 PM

Consisting of a resin and a hardener, a two-component epoxy can be formulated to offer a wide range of mechanical, thermal and electrical properties. While mix ratios differ, they all offer the ability to cure at ambient temperatures or elevated temperatures for faster cures. Here are a few tips to help you mix and apply your two-part epoxy.

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Topics: Epoxy Adhesives, Adhesive Solutions

Improve Precision and Reduce Time When Removing Conformal Coatings

Posted by Vlad David on May 21, 2018 11:00:00 AM

UV curable conformal coating materials such as HumiSeal UV40 are frequently used in military, aerospace and automotive applications due to superior resistance to chemicals and mechanical stress. These properties make them difficult to remove when rework under the coating is required.

There are products available for chemical removal of conformal coatings, but many are restricted by government regulation and health and safety concerns.

An effective method for localised removal of conformal coatings, allowing the rework of the components, is the powder or micro-abrasion equipment.

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Topics: Micro Abrasion, conformal coating application, conformal coating removal

5 Simple Steps to Eliminate Bubbles in Potting Encapsulants

Posted by Humiseal Editor on Apr 16, 2018 11:00:00 AM

Encapsulant solutions are commonly used to enhance protection of circuit boards from environmental and liquid contaminants, chemical attack, and electrical shortages. While potting materials provide many positive attributes when used to protect PCBs, sometimes other issues arise during and post application of these compounds. This blog focuses on “bubbles” forming within the encapsulant itself.

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Topics: Humiseal, Encapsulants

A Quick Guide to Understand IPC-CC-830B Qualification Standard

Posted by Vlad David on Mar 28, 2018 11:30:00 AM

IPC CC-830 revision B is a conformal coating qualification standard mostly used by board fabricators, OEM design engineers, and coatings suppliers.  

There are two fundamental uses of this IPC standard:

  • Coatings’ performance capabilities
  • Quality consistency

In this blog, we will go over some of the specifications along with tests requirements, passing criteria, and quality characteristics.

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Topics: Conformal Coatings, Conformal Coating Process, Standard Qualifications, IPC-CC-830B

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

Posted by Rafael Hernandez on Mar 14, 2018 10:30:00 AM

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 identify and understand the variables of the process.

The most important variables:

  • Viscosity
  • Flow
  • Machine parameters (speed and Height)
  • Curing method

In this blog, we will concentrate on reviewing the first variable: Viscosity

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Topics: Conformal Coatings, conformal coating application, viscosity

How Best to Protect PCB Mounted Components from Vibration

Posted by Albert Hernandez on Feb 26, 2018 1:00:00 PM

Electronics continue to be placed into harsher environments, and PCB component vibration dampening remains a challenge for many industries. When the solder connection strength is not going to be sufficient to withstand years of vibration, there is a solution: staking materials.

Numerous fields of industry manufacture products that are prone to high-vibration environments. Some of them are:

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Topics: Adhesive Solutions, Vibration Suppression