About Isola: A Global Leader in High-Performance PCB Materials
Isola Group is a world-leading manufacturer of copper-clad laminates (CCL) and prepregs, headquartered in Chandler, Arizona, with over 100 years of electronic materials manufacturing history. As a benchmark company in high-performance PCB substrates, Isola's products are widely used in communications, computing, automotive, aerospace, and military applications.
Isola's core competitive advantage lies in its complete product gradient—from standard FR-4 to ultra-low-loss millimeter-wave materials, covering virtually all frequency ranges for PCB design requirements. This allows design engineers to flexibly select optimal material solutions within a single supplier ecosystem based on project needs.
Isola Product Line Overview
FR408 / FR408HR — Enhanced FR-4 Substrate
The FR408 series is Isola's classic enhanced FR-4 product, offering higher Tg (glass transition temperature) and better thermal reliability compared to standard FR-4. The FR408HR (High Reliability) version further improves CAF (Conductive Anodic Filament) resistance and thermal cycling performance.
- Dk (Dielectric Constant): 3.68 @10GHz
- Df (Dissipation Factor): 0.0120 @10GHz
- Tg: 180°C (DSC)
- Applications: Server motherboards, networking equipment, industrial control for mid-to-high-speed applications
370HR — High-Reliability High-Tg Material
370HR is Isola's flagship product for high-reliability applications, renowned for its exceptional thermal performance and CAF resistance. It is the preferred material for harsh environments in automotive electronics and aerospace.
- Dk: 3.92 @10GHz
- Df: 0.0125 @10GHz
- Tg: 180°C (DSC)
- Td (Decomposition Temperature): 340°C
- Applications: Automotive ADAS, avionics, high-reliability industrial equipment
I-Speed — Very Low Loss High-Speed Material
I-Speed is positioned as a Very Low Loss grade material, specifically designed for high-speed digital signal transmission. It provides significantly better signal integrity than standard FR-4 while maintaining good processability.
- Dk: 3.36 @10GHz
- Df: 0.0070 @10GHz
- Tg: 200°C (DSC)
- Applications: High-speed switches, 5G base station backhaul, data center interconnects
I-Tera MT40 — Ultra Low Loss Flagship Material
I-Tera MT40 is Isola's Ultra Low Loss grade product, representing the performance limit of epoxy-based PCB materials. Its extremely low dielectric loss makes it ideal for 56Gbps+ high-speed SerDes links.
- Dk: 3.45 @10GHz
- Df: 0.0031 @10GHz
- Tg: 200°C (DSC)
- Applications: AI servers, 800G switches, high-performance computing
Astra MT77 — Millimeter-Wave Extremely Low Loss Material
Astra MT77 is the lowest-loss material in Isola's product line, designed specifically for millimeter-wave frequencies (>30GHz). Its PTFE-enhanced resin system provides electrical performance approaching Rogers and other PTFE materials while maintaining processing compatibility with standard FR-4.
- Dk: 3.00 @10GHz
- Df: 0.0017 @10GHz
- Tg: 200°C (DSC)
- Applications: 77GHz millimeter-wave radar, 5G mmWave antennas, satellite communications
TerraGreen — Halogen-Free Eco-Friendly Material
The TerraGreen series is Isola's halogen-free product line, meeting RoHS and IPC-4101E standards, suitable for consumer electronics and automotive applications with strict environmental requirements.
Isola Product Positioning Matrix
| Product | Loss Grade | Df @10GHz | Typical Applications |
|---|---|---|---|
| FR408HR | Low Loss | 0.0120 | Servers, Networking |
| 370HR | Low Loss | 0.0125 | Automotive, Aerospace |
| I-Speed | Very Low Loss | 0.0070 | 5G Base Stations, High-Speed Switching |
| I-Tera MT40 | Ultra Low Loss | 0.0031 | AI Servers, 800G |
| Astra MT77 | Extremely Low Loss | 0.0017 | mmWave Radar, Satellite |
Why Choose Isola PCB Materials?
1. Complete Product Gradient
From standard enhanced FR-4 to millimeter-wave materials, Isola offers the industry's most complete performance gradient. Engineers can find the optimal solution within a single supplier ecosystem based on actual frequency requirements and cost budgets.
2. Excellent Processing Compatibility
Unlike pure PTFE materials, Isola's high-frequency materials (including Astra MT77) maintain processing compatibility with standard FR-4, requiring no additional equipment investment or process changes from PCB fabricators.
3. Global Supply Chain Assurance
Isola has manufacturing facilities in the Americas, Europe, and Asia, providing stable supply assurance for global customers. This is particularly important for high-volume production projects.
4. Comprehensive Technical Support
Isola provides complete material simulation models (including Dk/Df frequency curves and stackup design recommendations) compatible with mainstream EDA tools, helping engineers make accurate material selections during the design phase.
Conclusion
As a global leader in high-performance PCB materials, Isola's product line covers the complete frequency range from 1GHz to 77GHz+. Whether pursuing high reliability for automotive electronics or ultimate signal integrity for AI servers and millimeter-wave radar, the optimal solution can be found within Isola's product matrix. When selecting PCB materials, engineers are advised to reference Isola's product gradient for rational selection based on actual operating frequency, signal rate, and reliability requirements.