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Vlad David

Vlad David
Vlad David is HumiSeal's European Senior Sales & Technical Support Specialist. Vlad will is based in Winnersh UK. He has a Master of Science degree in Mechatronics, Robotics and Automation Engineering and a Bachelor of Science degree in Automotive Engineering from the University of Oradea Roman.
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Recent Posts

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

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

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

What is a Wet Gauge and How to Measure Conformal Coating Thickness?

Posted by Vlad David on Oct 10, 2017 11:00:00 AM

The application of the conformal coating in a uniform and consistent coverage is a key challenge that defines the reliability of the finished product.

A thin coating will provide inadequate protection against corrosion or insulation between conductors. Conversely, if the conformal coating is too thick, it will increase the risk of forming other types of coating defects such as bubbles, insufficient curing, and potential cracking during thermal shock cycles.

Besides the verification of the process parameters such as coating viscosity and the application method is correctly setup, the amount of conformal coating material applied on the printed circuit boards can be measured before curing. For this, wet film conformal coating thickness gauges are used. This method ensures quality control while the coating material is still wet.

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Topics: Conformal Coatings, Coating Application Preparation, Conformal Coating Process