LORD Corporation

With more than 3,100 employees in 26 countries, 19 manufacturing facilities and 10 R&D centers worldwide, we're there for our customers.

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Dielectric Strength | Dielectric Breakdown Strength

What is Dielectric Strength?

Dielectric strength, also known as dielectric breakdown strength (DBS), is the maximum electrical potential that a material can resist before the electrical current breaks through the material and the material is no longer an insulator. DBS is tested per ASTM D149 and measured in kV/mm or V/mil.

When looking at DBS values, it is important to consider at what thickness the measurement was taken. Materials tested in thin sections will yield higher DBS values in kV/mm than materials tested in thick sections. Ideally, both thick and thin materials would yield the same DBS results, since the units are electric potential per thickness, but with thicker materials come more impurities, no matter how small, which will ultimately lead to the decrease in DBS.

Featured Products

We specialize in developing world-class thermal management, potting and encapsulation, gap filling, semiconductor packing, adhesive and thick film materials for demanding applications. Our experience in electronic materials spans more than 50 years, and we incorporate this vast knowledge in developing solutions for new applications to help ensure our customers' success.

Our Electronic Materials product line includes solutions that have high dielectric strength (electrically insulative) as well as materials that are electrically conductive.

LORD offers potting, adhesives and gap fillers that are electrically insulative due to their high dielectric strength.

Application Note: materials that have both high dielectric strength and thermal conductivity provide multiple benefits when used in various applications, such as in EVs.


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