Isola I-Tera MT40 PCB 0.254mm 1OZ Silver Plated High-Speed RF Circuit Board

Product Specification

This custom 2-layer Isola I-Tera MT40 high-speed PCB is engineered for reliable high-speed digital and RF/microwave circuit applications. Built with a 0.254mm ultra-thin MT40 dielectric core and 1oz/1oz finished double-sided copper weight, this PCB adopts premium silver plating surface treatment to deliver excellent conductivity, corrosion resistance and stable signal transmission performance. It features a specialized solder mask with top non-mask white silkscreen and bottom non-mask blank surface, plus customized metal edge cladding at designated positions for enhanced structural durability and shielding consistency. Sized at 108mm × 35mm, this rigid circuit board follows strict industrial manufacturing standards, serving as a cost-effective and high-reliability upgrade over conventional FR4 PCBs for modern high-frequency and high-speed electronic systems.

PCB Specifications

I-Tera MT40 Material Introduction

I-Tera MT40 is a premium low-loss laminate and prepreg material developed by Isola, specially optimized for high-speed digital transmission and RF/microwave circuit designs. It effectively bridges the performance gap between standard FR-4 and high-cost PTFE substrates, delivering balanced high performance and commercial cost efficiency. The material maintains extremely stable dielectric constant across wide temperature ranges from -55°C to +125°C, with steady electrical parameters even under W-band high-frequency operating conditions. Featuring a low dissipation factor of 0.0031 at 2GHz, it greatly reduces high-frequency signal attenuation and ensures complete signal integrity for high-speed transmission systems.

MT40 boasts outstanding thermal stability with a 215°C glass transition temperature (Tg) and a 360°C decomposition temperature (Td), supporting multiple reflow and lamination cycles for lead-free assembly. Different from PTFE materials that require complex hole processing, I-Tera MT40 is fully compatible with standard FR-4 fabrication workflows, eliminating special treatment procedures and improving production consistency. Available in diverse laminate and prepreg thicknesses with multiple copper foil options including HVLP, RTF and embedded resistor foil, it supports flexible customization for double-sided, multilayer and hybrid high-speed PCB designs.

Key Performance Advantages

Stable Low-Loss Electrical Performance: Fixed Dk of 3.45 and ultra-low Df of 0.0031 minimize insertion loss and signal distortion, ideal for 5G RF, microwave modules and high-speed digital circuits.

Excellent Thermal Reliability: High Tg and Td values, paired with stable CTE characteristics, prevent delamination and structural deformation during high-temperature assembly and long-term operation.

FR-4 Process Compatibility: Requires no special PTFE processing techniques, ensuring high yield rates and stable batch production for commercial mass manufacturing.

Superior Environmental Resistance: RoHS compliant, CAF resistant, and low moisture absorption at only 0.1%, adapting to complex industrial and outdoor working environments.

Diversified Customization Capacity: Supports multiple copper weights, glass fabric types and panel specifications, meeting diverse high-speed and RF PCB customization demands.

Typical Applications

Thanks to its stable dielectric performance, ultra-low signal loss, outstanding thermal stability and FR-4 process compatibility, Isola I-Tera MT40 high-speed PCBs fit a wide range of high-frequency, microwave and high-speed digital scenarios:

5G Communication Devices: Ideal for 5G base station RF modules, signal transceivers and wireless communication hardware that requires consistent high-frequency signal integrity.

Microwave & Radar Systems: Suitable for microwave sensing units, precision radar detection equipment and RF front-end modules with strict low-loss requirements.

High-Speed Digital Equipment: Perfect for high-speed server motherboards, industrial high-speed transmission circuits and data processing devices to reduce signal delay and distortion.

Industrial Wireless Modules: Widely applied in commercial wireless communication equipment and industrial high-frequency control modules that demand long-term operational stability.

Conclusion

This customized 2-layer I-Tera MT40 PCB integrates ultra-thin substrate, 1oz double-sided copper, immersion silver finishing and precise metal edge cladding, fully leveraging MT40’s low-loss, high-temperature resistant and high-stability material properties. It provides a reliable, cost-effective alternative to expensive PTFE circuit boards, delivering consistent signal performance and structural durability for commercial high-speed digital and RF/microwave applications.