Smart Fiberglass Solutions Contact Us Now
Views: 0 Author: Site Editor Publish Time: 2026-05-11 Origin: Site
Electronic fiberglass cloth is one of the most important reinforcement materials in the modern electronics industry. From smartphones and computers to automotive PCBs, aerospace systems, 5G communication equipment, industrial control boards, and copper clad laminates, electronic-grade fiberglass fabric plays a critical role in electrical insulation, dimensional stability, thermal resistance, signal reliability, and mechanical reinforcement.
Common electronic fiberglass cloth styles such as 7628, 2116, 1080, and 106 are widely used in PCB laminates, FR4 boards, high-frequency materials, prepreg systems, PTFE coated fabrics, and composite insulation structures.
Copper clad laminates (CCL)
Printed circuit boards (PCB)
High-frequency communication materials
Composite laminates
PTFE coated fiberglass fabrics
Aerospace insulation systems
Industrial FRP reinforcement
This guide explains the major electronic fiberglass cloth specifications, their characteristics, typical applications, differences between models, and how to select the right fiberglass fabric for your project.
Electronic fiberglass cloth is a woven fabric made from electronic-grade E-glass yarns. It is designed specifically for electrical insulation, PCB laminate manufacturing, copper clad laminates, and advanced electronic composite materials.
Compared with ordinary fiberglass cloth, electronic-grade fiberglass fabric offers:
Lower dielectric constant
Better electrical insulation
Excellent dimensional stability
High heat resistance
Controlled thickness uniformity
Superior resin compatibility
Cleaner surface quality for PCB lamination
These properties make electronic fiberglass cloth a core reinforcement material inside FR4 laminates, multilayer PCB structures, high-speed circuit boards, and industrial electronic insulation systems.
Modern electronic products require smaller circuit sizes, higher signal transmission speeds, better heat resistance, improved dimensional stability, and lower signal loss. The fiberglass cloth used inside the laminate directly affects PCB performance.
Electronic fiberglass fabric influences:
PCB thickness control
Mechanical strength
Electrical insulation
Signal integrity
Thermal expansion performance
Resin flow and lamination stability
Warping and dimensional accuracy
Thinner fiberglass cloth styles such as 106 and 1080 are commonly used in HDI and high-frequency PCB designs, while thicker styles such as 7628 are widely used in industrial, automotive, and multilayer boards.
7628 fiberglass cloth is one of the most widely used electronic fiberglass cloth specifications in the PCB industry. It has a relatively thick structure, high mechanical strength, excellent dimensional stability, strong resin compatibility, and good cost performance for multilayer PCB production.
Typical thickness is approximately 0.173 mm, with fabric weight around 200 g/m².
Main applications:
Multilayer PCB boards
Industrial control systems
Automotive electronics
Copper clad laminates
PTFE coated fiberglass fabrics
FRP reinforcement
Advantages: excellent strength, stable lamination performance, good heat resistance, wide availability, and strong compatibility with common resin systems.
Limitations: because of its thicker weave, 7628 may not be the best choice for ultra-thin, ultra-high-frequency, or fine-line PCB designs.
2116 fiberglass cloth is a balanced specification between thin and thick PCB fiberglass fabrics. It offers moderate thickness, good dielectric performance, strong dimensional stability, and excellent resin impregnation.
Typical thickness is approximately 0.094 mm.
Main applications:
Consumer electronics
Communication equipment
Mid-layer PCB structures
Multilayer PCB prepreg systems
High-performance laminates
Many PCB manufacturers prefer 2116 because it balances cost, mechanical performance, electrical stability, and lamination reliability. It is a versatile electronic fiberglass cloth for general-purpose multilayer boards.
1080 fiberglass cloth is thinner and lighter than 2116 and 7628. It is used for thin laminate construction, high-frequency circuits, and applications requiring better signal performance.
Typical thickness is approximately 0.053 mm.
Main applications:
HDI PCBs
High-frequency circuits
RF communication boards
5G equipment
Thin electronic devices
Advantages: suitable for miniaturized electronics, better signal transmission, lower dielectric variation, and reduced board thickness.
Consideration: thinner weaves may create resin-rich areas that influence impedance consistency in high-speed PCB applications, so process control is important.
106 fiberglass cloth is an ultra-thin electronic fiberglass fabric used in advanced electronic applications. Its extremely thin structure supports ultra-light PCB construction, fine-line circuitry, and advanced HDI manufacturing.
Main applications:
Smartphone motherboards
Precision electronic devices
Semiconductor packaging
Advanced communication electronics
Ultra-thin laminates
Features: extremely low thickness, lightweight structure, excellent electrical performance, and suitability for ultra-thin laminate systems.
However, thinner cloth styles generally have lower dimensional stability compared with thicker styles, so they require precise process control during lamination.
7637 and 7630 fiberglass fabrics are specialty electronic cloth styles used for PCB laminates, composite reinforcement, and industrial electronic insulation. These styles provide stronger reinforcement and are commonly used in industrial-grade electronic systems.
PCB laminates
Composite reinforcement
Industrial electronic insulation
Power electronics
High-strength laminates
Style | Approx. Thickness | Typical Weight | Main Characteristics | Main Applications |
|---|---|---|---|---|
106 | Ultra-thin | Very light | Excellent for HDI and ultra-thin laminates | Smartphones, precision electronics |
1080 | Thin | Light | Better signal performance and reduced board thickness | RF and high-speed PCBs |
2116 | Medium | Medium | Balanced mechanical and electrical performance | Consumer electronics and multilayer boards |
7628 | Thick | Heavy | High strength and excellent dimensional stability | Industrial multilayer PCBs |
7630 | Medium-heavy | Heavy | Strong reinforcement | Industrial laminates |
7637 | Heavy | Heavy | Excellent dimensional stability | Power electronics |
The PCB industry commonly uses 7628, 2116, and 1080 as mainstream electronic fiberglass cloth styles, while 106 is preferred for ultra-thin HDI applications.
Electronic fiberglass cloth provides excellent dielectric insulation performance, making it suitable for PCB manufacturing, copper clad laminates, electronic insulation boards, and high-voltage electronic components.
Most electronic-grade E-glass fabrics can withstand high temperatures and are suitable for PCB lamination, high-temperature insulation, soldering environments, industrial electronics, and thermal protection systems.
Stable warp and weft structures help prevent PCB warping, lamination deformation, and misalignment during processing. This is especially important in multilayer PCB production.
Electronic fiberglass cloth is usually treated with coupling agents to improve bonding with epoxy resin, PTFE resin, phenolic resin, silicone resin, and other laminate systems.
Proper resin compatibility improves mechanical strength, electrical stability, heat resistance, and long-term durability.
Fiberglass itself is non-combustible and widely used in fireproof laminates, aerospace insulation, thermal barriers, electrical protection systems, and industrial fire-resistant composites.
The production of electronic-grade fiberglass cloth requires more precise quality control than ordinary industrial fiberglass fabrics. The typical process includes:
E-glass raw material melting
Fiber drawing
Yarn twisting
Precision weaving
Desizing treatment
Surface chemical treatment
Heat cleaning
Quality inspection
Packaging
Compared with ordinary fiberglass fabrics, electronic fiberglass cloth requires tighter control of thickness tolerance, weave uniformity, electrical properties, resin compatibility, and surface cleanliness.
PCB Structure | Recommended Cloth Style | Reason |
|---|---|---|
Thin HDI boards | 106 / 1080 | Ultra-thin structure and better signal performance |
Standard consumer electronics | 2116 | Balanced cost, thickness, and electrical stability |
Industrial multilayer boards | 7628 / 7630 | Higher strength and dimensional stability |
Power electronics | 7637 / 7628 | Strong reinforcement and stable laminate support |
High-frequency PCB systems require lower dielectric variation, better weave uniformity, lower signal loss, and more stable impedance control. Engineers often prefer thinner and tighter weave structures for RF, 5G, and high-speed communication applications.
For stronger reinforcement, styles such as 7628, 7637, and 7630 are recommended. These electronic fiberglass cloth styles provide better tensile strength, lamination stability, and structural support.
Feature | Electronic Fiberglass Cloth | Ordinary Fiberglass Cloth |
|---|---|---|
Electrical insulation | Excellent | Moderate |
Dimensional stability | Very high | Standard |
Surface cleanliness | Strict control | Less strict |
PCB compatibility | Excellent | Limited |
Resin compatibility | Optimized | General |
Cost | Higher | Lower |
Main application | PCB and electronics | Industrial composites |
As a professional fiberglass fabric manufacturer, RUISHUN Materials supplies electronic-grade fiberglass fabrics for PCB, insulation, PTFE coating, composite reinforcement, and industrial applications.
RUISHUN main electronic fiberglass products include:
7628 fiberglass cloth
2116 fiberglass cloth
1080 fiberglass cloth
Electronic grade E-glass fabric
PTFE compatible fiberglass cloth
Silicone coated fiberglass fabric
High silica fabric
Quartz fiber fabric
PCB reinforcement fiberglass cloth
RUISHUN focuses on uniform weave structure, controlled thickness tolerance, stable resin compatibility, and consistent electrical performance for electronic and industrial fiberglass fabrics.
RUISHUN supports customized widths, OEM packaging, surface treatments, coating solutions, and industrial-grade composite fabric specifications for different project requirements.
RUISHUN supplies fiberglass fabrics to Southeast Asia, Europe, India, the Middle East, South America, North America, and other global markets.
In addition to PCB-grade fiberglass cloth, RUISHUN also provides fireproof fiberglass fabric, silicone coated cloth, welding blankets, high silica cloth, quartz fiber fabrics, and thermal insulation materials.
As AI electronics, 5G communication, EV vehicles, aerospace systems, high-speed servers, and ultra-thin electronic devices continue to grow, demand for advanced electronic fiberglass cloth will continue increasing.
The industry is moving toward:
Lower dielectric fiberglass fabrics
Ultra-thin fiberglass cloth
High-frequency compatible materials
Improved dimensional stability
High-performance prepreg systems
Better signal integrity for high-speed electronics
Electronic fiberglass cloth is one of the core materials behind modern PCB manufacturing and advanced electronics. Different styles such as 106, 1080, 2116, 7628, 7630, and 7637 each offer different advantages in thickness, mechanical strength, electrical performance, signal stability, and lamination capability.
Choosing the correct fiberglass cloth specification can significantly improve PCB reliability, signal integrity, thermal resistance, dimensional stability, and manufacturing efficiency.
As an experienced fiberglass fabric manufacturer, RUISHUN Materials provides high-quality electronic fiberglass fabrics and customized industrial fiberglass solutions for global customers. Whether you need PCB-grade fiberglass cloth, PTFE-compatible fabrics, or high-temperature insulation materials, RUISHUN can provide reliable and cost-effective solutions for your projects.
Electronic fiberglass cloth is mainly used in PCB laminates, copper clad laminates, FR4 boards, prepreg systems, high-frequency circuit materials, PTFE coated fabrics, and electronic insulation applications.
7628 fiberglass cloth is thicker and stronger, making it suitable for industrial and multilayer PCB boards. 2116 fiberglass cloth is thinner and more balanced, making it suitable for consumer electronics, communication equipment, and general multilayer PCB structures.
For high-frequency PCB applications, thinner styles such as 1080 and 106 are commonly preferred because they support thinner laminates and better signal performance when properly processed.
No. Electronic fiberglass cloth has stricter control of thickness, weave uniformity, surface cleanliness, electrical insulation, and resin compatibility. Ordinary fiberglass cloth is mainly used for general industrial reinforcement and composite applications.
Yes. RUISHUN can provide customized fiberglass fabric solutions based on fabric style, width, thickness, coating, surface treatment, packaging, and application requirements.
