Blog - JingHong

Glass Fiber Series

Compare FR4 Variants and When to Choose High-Tg Grades

James Yang

Sep 23, 2025

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Glass Fiber Series

Typical Electrical Insulation Limits and Dielectric Strength of G10

G10 sheet, a high-performance glass epoxy laminate, exhibits exceptional electrical insulation properties and dielectric strength, making it a cornerstone material in various electrical and electronic applications. The typical dielectric strength of G10 ranges from 800 to 1,000 volts per mil (0.001 inch), equivalent to approximately 31.5 to 39.4 kV/mm. This impressive insulation capability allows G10 to withstand substantial voltage differences without electrical breakdown. The material's low moisture absorption rate, typically less than 0.1%, further enhances its electrical performance by maintaining consistent insulation properties even in humid environments. G10's unique combination of high dielectric strength, excellent mechanical properties, and chemical resistance makes it an ideal choice for critical electrical components, circuit boards, and high-voltage insulation applications across various industries.

James Yang

Sep 23, 2025

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Glass Fiber Series

How do G10 and FR4 Compare in Electrical Insulation Performance?

G10 sheet and FR4 are both high-performance electrical insulation materials widely used in the electronics industry. While they share many similarities, their electrical insulation performance differs in subtle yet significant ways. G10 generally offers superior dielectric strength and slightly better insulation resistance, making it ideal for high-voltage applications. FR4, on the other hand, provides excellent flame retardancy and maintains good electrical properties at higher frequencies. Both materials exhibit low moisture absorption and thermal stability, contributing to their reliability in various electrical applications. The choice between G10 and FR4 often depends on specific project requirements, balancing factors such as voltage levels, operating frequencies, and environmental conditions.

James Yang

Sep 23, 2025

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Phenolic Series

How Are Phenolic Cotton Sheets Manufactured and Cured?

Caroline Jia

Sep 23, 2025

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Phenolic Series

Where to Buy Certified Bakelite Sheets and Grades?

Caroline Jia

Sep 23, 2025

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Phenolic Series

How to Test Dielectric Strength of Bakelite Sheets?

Caroline Jia

Sep 23, 2025

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Glass Fiber Series

Best Test Standards and Methods for Measuring G10 Strength

James Yang

Sep 22, 2025

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Phenolic Series

How do Phenolic Cotton Sheets Compare to Bakelite in High-Voltage Use?

Caroline Jia

Sep 22, 2025

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Glass Fiber Series

What are the Trade-Offs Between Halogen-Free FR4 and Standard FR4?

The trade-offs between halogen-free FR4 sheet and standard FR4 primarily revolve around environmental impact, flame retardancy, and performance characteristics. Halogen-free FR4 offers improved environmental friendliness and reduced toxicity during disposal or recycling, addressing growing concerns about the environmental impact of electronic waste. However, it may exhibit slightly different flame retardant properties compared to standard FR4, which has long been the industry norm. Standard FR4 typically provides excellent flame retardancy and established performance metrics, but faces scrutiny due to potential environmental concerns associated with halogenated compounds. The choice between these materials often depends on balancing regulatory compliance, environmental considerations, and specific application requirements in the electronics industry.

James Yang

Sep 22, 2025

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