Blog - JingHong

Glass Fiber Series

How G10 Compares to FR-4 for High-Temperature Use?

When it comes to high-temperature applications, G10 sheet and FR 4 sheets exhibit distinct performance characteristics. G10, a glass epoxy laminate, offers superior thermal stability and can withstand temperatures up to 130°C (266°F) without significant degradation. FR-4, while similar in composition, incorporates flame-retardant additives that slightly reduce its thermal performance, with a maximum operating temperature of around 125°C (257°F). For applications requiring sustained exposure to temperatures above these limits, neither material is ideal, and alternatives like G11 or ceramic-based composites should be considered. The choice between G10 and FR-4 for high-temperature use ultimately depends on the specific requirements of the application, including flame resistance needs and the exact temperature range involved.

James Yang

Sep 24, 2025

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Glass Fiber Series

Surface Finish and Cleaning after FR4 Machining

James Yang

Sep 24, 2025

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Glass Fiber Series

How does Moisture Absorption Affect G10 Electrical Performance?

James Yang

Sep 23, 2025

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Glass Fiber Series

What Are the Typical Electrical Properties of FR4 Sheets?

FR4 sheets, widely used in printed circuit boards (PCBs), exhibit exceptional electrical properties that make them ideal for various electronic applications. These sheets boast a dielectric constant typically ranging from 4.2 to 4.8, ensuring consistent electrical performance across circuits. Their low dissipation factor, usually between 0.01 and 0.03, minimizes energy loss as signals traverse the PCB. FR4 sheets also demonstrate impressive dielectric strength, often exceeding 50 kV/mm, providing excellent insulation. Moreover, their volume resistivity, typically around 10^9 ohm-cm, contributes to their superior electrical insulation capabilities. These properties collectively make FR4 sheets a cornerstone material in the electronics industry, enabling reliable and efficient performance in diverse applications.

James Yang

Sep 23, 2025

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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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Glass Fiber Series

Best Test Standards and Methods for Measuring G10 Strength

James Yang

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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