Blog - JingHong

Industry standards

Electrical Breakdown Voltage: Why It Matters in Insulation Materials

Electrical breakdown voltage is a crucial factor in the performance and safety of insulation materials. It refers to the minimum voltage that causes an insulator to become electrically conductive, leading to a sudden and significant increase in current flow. This property is paramount in determining the effectiveness of insulation sheets and other dielectric materials used in electrical systems. Understanding breakdown voltage helps engineers and manufacturers design reliable insulation solutions that can withstand high electrical stresses without compromising safety or performance. The importance of this characteristic extends across various industries, from power transmission and distribution to electronics and aerospace, where maintaining electrical integrity is vital for preventing equipment failure and ensuring operational safety.

James Yang

Sep 12, 2025

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Glass Fiber Series

Understanding FR4 Epoxy Sheet Material Certifications

James Yang

Sep 12, 2025

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Industry standards

Common Mistakes When Choosing Insulation Sheets

James Yang

Sep 12, 2025

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Glass Fiber Series

G10 Epoxy Sheet Thermal and Electrical Stability Explained

James Yang

Sep 11, 2025

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Glass Fiber Series

How FR4 Epoxy Sheet Performs in Outdoor Environments?

James Yang

Sep 11, 2025

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Glass Fiber Series

Electrical Breakdown Voltage of FR4 Epoxy Sheet

FR4 epoxy sheet, renowned for its exceptional electrical insulation properties, boasts an impressive electrical breakdown voltage. This critical characteristic defines the maximum electric field strength the material can withstand before its insulating properties fail. Typically, FR4 epoxy sheets exhibit a dielectric breakdown voltage exceeding 50 kV, with some high-grade variants reaching up to 65 kV or more. This remarkable dielectric strength makes FR4 an ideal choice for various applications in the electronics industry, particularly in the production of printed circuit boards (PCBs) and high-voltage insulators. The ability to withstand such high voltages ensures the reliability and safety of electronic components, making FR4 epoxy sheets indispensable in modern electrical and electronic engineering.

James Yang

Sep 11, 2025

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Glass Fiber Series

How 3240 Epoxy Sheet Performs Under Continuous Heat Load?

James Yang

Sep 11, 2025

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Glass Fiber Series

Advantages of G10 Epoxy Sheet in High-Strength Projects

James Yang

Sep 11, 2025

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Phenolic Series

Bakelite Sheet Chemical Resistance for Harsh Environments

Bakelite sheet exhibits remarkable chemical resistance, making it an ideal material for harsh environments. This thermosetting phenolic resin possesses exceptional durability against a wide range of chemicals, including acids, alkalis, and solvents. Its unique molecular structure, formed through the polymerization of phenol and formaldehyde, creates a cross-linked network that imparts superior resistance to chemical attack. This inherent property allows Bakelite sheet to maintain its structural integrity and performance in corrosive industrial settings, chemical processing plants, and laboratories where exposure to aggressive substances is commonplace. The material's ability to withstand chemical degradation ensures longevity and reliability in applications where other materials might fail prematurely.

Caroline Jia

Sep 11, 2025

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