RO3203 High Frequency PCBs Delivering Performance and Value for RF Applications
October 6, 2025
In the competitive landscape of high-frequency electronics, achieving a balance of top-tier electrical performance, mechanical robustness, and cost-effectiveness is key. The RO3203 high-frequency laminate is engineered to meet this exact challenge.
As a ceramic-filled, woven fiberglass-reinforced material from the respected RO3000 series, RO3203 offers exceptional stability and extended frequency performance, making it a smart choice for a wide array of demanding RF and microwave designs.
RO3203 at a Glance
RO3203 is a high-frequency circuit material designed to provide:
A stable dielectric constant (Dk) of 3.02
An ultra-low dissipation factor (Df) of 0.0016
Reliable operation in frequency ranges beyond 40 GHz
Its reinforced construction enhances mechanical stability without sacrificing electrical performance, offering an excellent price-to-performance ratio for commercial and industrial applications.
Key Material Properties
Thermal Management: Thermal conductivity of 0.48 W/mK aids in heat dissipation.
Electrical Integrity: High volume and surface resistivity (107 MΩ·cm and 107 MΩ, respectively) ensure reliable insulation.
Dimensional Stability: 0.8 mm/m in X/Y directions supports precision layouts.
Moisture Resistance: Low moisture absorption (<0.1%) maintains performance in humid environments.
Controlled Thermal Expansion: CTE of 13 ppm/°C (X/Y) and 58 ppm/°C (Z) minimizes stress during thermal cycling.
Robust & Reliable:
Thermal decomposition temperature: 500°C
Copper peel strength: 10.2 lbs/in
UL 94 V-0 flammability rating
Lead-free process compatible
PCB Manufacturing Flexibility
We support a full suite of fabrication options with RO3203:
Stack-Ups: Single-layer, double-layer, multilayer, and hybrid configurations
Copper Weight: 1 oz (35µm) and 2 oz (70µm) standard
Thickness Options: 10 mil, 20 mil, 30 mil, 60 mil, and more
Max Board Size: Up to 400 mm × 500 mm
Solder Mask Colors: Green, black, blue, yellow, red, and others
Surface Finishes: ENIG, HASL, Immersion Silver, OSP, Immersion Tin, ENEPIG, Pure Gold, and bare copper
Common Applications
RO3203 is widely used in cost-sensitive yet performance-driven applications, such as:
Automotive collision avoidance systems
GPS antennas
Microstrip patch antennas
Direct broadcast satellites
Remote meter readers (AMI/AMR systems)
Why Choose RO3203?
Whether you're designing for the automotive sector, satellite communications, or IoT infrastructure, RO3203 provides a dependable, cost-efficient substrate that doesn’t compromise on electrical or mechanical specs.
Its blend of low loss, high-frequency capability, and reinforced stability makes it an ideal solution for engineers targeting reliable, high-volume production.
Interested in integrating RO3203 into your next design? Reach out to explore its potential for your application.
