2-Layer WL-CT440 Rigid RF PCB Hydrocarbon Ceramic Filled High Frequency Board

This 2-layer rigid WL-CT440 high-frequency RF PCB is fabricated with hydrocarbon ceramic-reinforced fiberglass dielectric laminate, serving as an economical alternative to imported high-frequency substrates. Manufactured to IPC-Class-2 standards and finished with immersion gold plating, this 0.8mm thin circuit board delivers low dielectric loss, exceptional thermal conductivity, high Tg performance, and consistent dielectric stability. Featuring FR4-compatible fabrication processes, WL-CT440 is far easier to process than conventional PTFE materials while maintaining excellent repeatability and circuit reliability. It is commonly deployed in aerospace machinery, phased array antennas, radar hardware, and satellite communication assemblies.

PCB Specifications

PCB Stack-up Configuration

Artwork Format & Compliance Standard

Artwork Format: Provided in Gerber RS-274-X, an industry-standard format that ensures precise PCB fabrication and universal data compatibility.

Accepted Standard: IPC-Class-2, ensuring durable and reliable operation for aerospace & military high-frequency electronic devices.

Availability: Global shipping is offered to support international engineering procurement and industrial projects.

Introduction of WL-CT440 Substrate

WL-CT440 is a thermoset hydrocarbon ceramic fiberglass-reinforced copper-clad laminate engineered for high-frequency microwave applications. Formulated with hydrocarbon resin, composite ceramic filler, and woven fiberglass, this substrate delivers steady low-loss electrical performance for microwave circuit designs. Unlike complex PTFE-based materials, WL-CT440 adopts FR4-matched manufacturing workflows, simplifying PCB processing while maintaining outstanding stability and production repeatability.

The synergistic combination of hydrocarbon resin and ceramic additives provides minimal signal attenuation, superior heat resistance, and excellent temperature stability. This material exhibits a stable dielectric temperature coefficient, low thermal expansion rate, and an ultra-high Tg exceeding 280°C. As a cost-effective domestic substitute for imported high-frequency laminates, WL-CT440 is widely adopted for military, aerospace, and commercial radio frequency systems.

Key Features

Key Benefits

WL-CT440 offers distinct technical advantages for commercial and military high-frequency circuit designers:

FR4-compatible fabrication simplifies manufacturing and reduces production costs compared with PTFE substrates

Optimized low Dk and low Df values ensure clean, stable signal transmission across microwave frequency bands

Low water absorption prevents electrical performance degradation under humid atmospheric conditions

High thermal conductivity accelerates heat dissipation for high-power amplifier circuits

Copper-synchronized CTE minimizes thermal stress and enhances long-term structural reliability

Superior Tg property strengthens thermal stability during repeated soldering processes

Typical Applications

This WL-CT440 2-layer RF PCB is extensively utilized in military-grade, aerospace, and microwave communication systems:

Aerospace apparatuses, space cabin equipment and airborne electronic modules

-Microwave antennas and phase-sensitive antenna array systems

-Early-warning radar and airborne radar transceiver units

-Phased array antennas and microwave beam-forming networks

-Satellite communication, navigation systems and RF power amplifiers