Complete Guide to High-Speed PCB Materials
Introduction to High Speed Materials
In-house laminate storage at Highleap Electronic
What are High Speed Materials?
High speed materials refer to low-loss, low-dielectric constant materials designed for high-frequency (>1GHz) and high-speed digital signal applications. Mainly used for: RF/microwave circuits (1-100+ GHz), 5G communication systems, Millimeter wave radar, High-speed digital transmission (>10Gbps), Satellite communications, Aerospace electronics.
Key Performance Requirements
High-speed PCB materials must deliver superior signal integrity, power integrity, thermal resistance, quality, and reliability while meeting tight impedance control and ensuring stable performance across a wide range of frequencies, which is essential for preventing signal degradation, reducing EMI, and supporting the high data rates required in modern communication, computing, and aerospace systems.
High Speed Material Classification Standards
| Classification | Category | Specification | Typical Application |
|---|---|---|---|
| By Loss Tangent (Df) | Ultra-Low Loss | Df < 0.002 | Millimeter-wave |
| Low Loss | Df = 0.002–0.005 | Microwave | |
| Medium Loss | Df = 0.005–0.010 | High-frequency digital | |
| By Dielectric Constant (Dk) | Low Dk | Dk < 3.0 | Minimum signal loss |
| Medium Dk | Dk = 3.0–4.0 | Balanced performance | |
| Controlled Dk | Dk = 4.0–10.0 | Impedance matching |
Common Types of High Speed Materials
Standard FR4
The most cost-effective choice for general PCBs. However, due to higher dielectric loss, it is best suited for low-frequency and low-speed applications (usually below several hundred MHz). Not recommended for high-speed designs because signal quality can degrade at higher frequencies.
PTFE-Based Laminates
High-Tg Epoxy
With a glass transition temperature (Tg) between 170°C and 200°C, high-Tg epoxy offers better thermal stability and reduced expansion in the thickness direction. It’s ideal for thicker and multilayer boards, providing improved reliability while remaining cost-effective.
Polyimide
BT-Epoxy
Cyanate Ester
Trusted High Speed Materials Brands & Models
| Manufacturer | Material Model | Dielectric Constant (Dk) | Loss Tangent (Df) | Test Frequency | Glass Transition Temperature (Tg) | Application Type |
|---|---|---|---|---|---|---|
 |
IT-968 | ~3.4 - 3.8 | ~0.0035 - 0.005 | 10 GHz | 185°C (DSC) | High-speed digital / Radar |
| IT-988 | 3.63 | 0.0029 | 10 GHz | 190°C (TMA) | Ultra-high-speed digital (56 Gbps+) | |
| IT-988GSE | 3.21 | 0.0014 | 10 GHz | 180°C (TMA) | 56 Gbps+ applications | |
 |
TU-872 SLK | ~3.2 - 3.5 | ~0.003 - 0.005 | 1-10 GHz | 170°C+ | High-speed digital / 5G |
| TU-883 | ~3.2 - 3.4 | ~0.002 - 0.003 | 10 GHz | — | High Tg RF / Wireless | |
| TU-933 | 3.16 | 0.0021 | 10 GHz | — | High Tg ultra-low loss / Telecom | |
 |
MEGTRON-4 | 3.8 | 0.005 | 10 GHz | — | High Tg multilayer high-speed |
| MEGTRON-6 | 3.4 - 3.7 | 0.002 - 0.004 | 1-12 GHz | 185°C (DSC) | Networking equipment / 5G | |
| MEGTRON-7 | 3.6 | 0.0015 | 1 GHz | 200°C+ | Ultra-low loss / Servers | |
 |
I-Tera® MT40 | 3.38 - 3.75 | 0.0031 | 10 GHz | 200°C | High-speed digital / RF |
| IS620i | 3.58 | ~0.003 - 0.005 | 2-15 GHz | 225°C | High-speed digital | |
| Astra MT77 | ~3.0 | 0.0017 | W-band | — | High Tg millimeter wave / Auto radar | |
| FR408HR | ~3.7 | ~0.012 | 1 GHz | 180°C | High-speed digital | |
 |
RO4350B | 3.48 ± 0.05 | 0.003 - 0.0037 | 10 GHz | >280°C | RF / Microwave / High-speed digital |
| RO4003C | 3.38 ± 0.05 | 0.002 - 0.0027 | 10 GHz | >280°C | Commercial microwave / RF | |
| RO3003 | 3.00 ± 0.04 | 0.0013 | 10 GHz | >500°C | Commercial microwave / RF |
Key Application Markets for High Speed PCBs
Data Centers & Cloud Computing
AI & Machine Learning
Computing & Processors
Consumer Electronics
Test & Measurement Instruments
Oscilloscopes, logic analyzers with 50-800Gbps sampling rates. High-tech niche market with extremely high technical content.
Industrial Ethernet, motion controllers with 1-100Gbps real-time communication. High reliability requirements with stable market growth.
Why Choose Highleap Electronics for High Speed PCBs?
High-Speed PCB Expertise
Deep understanding of signal integrity, impedance control, and layout for high-frequency designs.
Certified High-Performance Materials
Wide selection of proven materials like MEGTRON, Rogers, and Isola for stable high-speed performance.
Precision Manufacturing
Advanced processes including laser drilling and controlled impedance routing for complex stack-ups.
Tight Impedance Control
Consistent impedance and low loss to support high-speed digital and RF signal integrity.
Reliable Quality Systems
ISO and IATF-certified processes ensure high quality and full traceability from prototype to production.
Engineering Support
Our team assists with material selection and stackup optimization based on your specific requirements. Feel free to contact us at [email protected] or call +86 135 0306 2089 for personalized assistance.
Partner with Highleap
With years of experience, we specialize in handling various PCB laminate materials. We provide high-quality, reliable PCB manufacturing and assembly services to bring your design to life.
Expertise in Diverse Materials
We have extensive experience handling various high-performance PCB laminates for optimal project outcomes.
Strict Quality Control
Rigorous quality control measures throughout production ensure consistently high-standard, reliable PCBs.
Advanced Manufacturing Technology
Utilizing advanced technology and equipment enables high-precision and efficient PCB production.
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