WL-CT440 PCB 2-Layer 35um copper weight built on 10mil substrate with Immersion Silver Finish

Custom 2-Layer 10mil WL-CT440 PCB with Immersion Silver Finish

Introducing the 2-layer 10mil PCB using WL-CT440 laminate, an advanced material designed for high-frequency and high-reliability applications. With its organic polymer ceramic fiberglass composition, WL-CT440 offers low loss performance, temperature stability, and high thermal conductivity, making it ideal for applications such as aerospace equipment, radar systems, and satellite communications. The Immersion Silver finish ensures excellent solderability and conductivity, while the IPC-Class-2 compliance guarantees quality and reliability for demanding use cases.

PCB Construction Details

PCB Stackup

The WL-CT440 core ensures high dielectric stability, low dissipation factor, and thermal reliability, ideal for microwave and RF circuits.

PCB Statistics

This PCB is designed for compact, high-performance layouts and includes the following statistics:

About WL-CT440 Laminate

The WL-CT440 laminate is a thermosetting resin-based high-frequency material incorporating hydrocarbon resin, ceramics, and fiberglass cloth. Its dielectric characteristics, matched thermal expansion coefficients, and high Tg (280°C) make it an excellent alternative to PTFE materials, with simpler processing requirements and better stability.

Key Features of WL-CT440:

• Dielectric Constant (Dk): 4.1 at 10GHz/23°C, offering precise impedance control.
• Dissipation Factor (Df): 0.005 at 10GHz, ensuring minimal signal loss.
• Thermal Coefficient of Dk (TCDk): -21 ppm/°C, maintaining performance over a wide temperature range.
• CTE (Coefficient of Thermal Expansion): X-axis: 14 ppm/°C, Y-axis: 18 ppm/°C, Z-axis: 35 ppm/°C
• Thermal Conductivity: 0.66 W/mK, providing efficient heat dissipation.
• Tg (Glass Transition Temperature): 280°C, ensuring dimensional stability at high temperatures.
• Moisture Absorption: 0.12%, providing reliability in humid environments.
• Flammability: UL-94 V0, meeting safety standards.

The WL-CT440 laminate allows for high-frequency performance while maintaining ease of processing, comparable to standard FR4 materials.

Benefits of WL-CT440-Based PCBs

The low dissipation factor (Df) and stable dielectric constant (Dk) enable minimal signal distortion in high-frequency circuits.

The high Tg (280°C) and thermal conductivity (0.66 W/mK) ensure consistent performance in extreme temperature environments.

Low moisture absorption (0.12%) ensures dimensional stability and signal integrity in harsh, humid conditions.

WL-CT440 laminates are more straightforward to process than PTFE materials, reducing manufacturing complexity while delivering stable and consistent results.

Matched CTEs and high thermal conductivity allow for durable performance, even in high-temperature or high-power applications.

The Immersion Silver finish enhances solderability and corrosion resistance, ensuring reliability and longevity for critical applications.

Application Scenarios

Aerospace Equipment

Microwave and RF Applications

Early Warning and Airborne Radar

Phased Array Antennas

Satellite Communication and Navigation systems

Power Amplifiers

Conclusion

The 2-layer 10mil WL-CT440 PCB with Immersion Silver finish is a high-performance solution for high-frequency, high-reliability applications requiring low loss, thermal stability, and durability. With its advanced hydrocarbon resin and ceramic composition, precise dielectric properties, and ease of processing, this PCB is an excellent choice for aerospace, radar systems, satellite communications, and antenna applications. Backed by IPC-Class-2 standards and 100% electrical testing, this PCB ensures superior quality and performance.

For inquiries or to discuss your specific requirements, contact us today to bring your high-frequency designs to life!