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Shengyi SCGA-500 GF255 PTFE with Glass Reinforced RF Circuit Material solution, strikes a remarkable balance between electrical performance and affordability, making it an ideal choice for RF and microwave applications.
In this article, we’ll discuss what really characterizes the Shengyi SCGA-500 GF255 laminate. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the high frequency PCB board, so please feel free to contact us.
What is the Shengyi SCGA-500 GF255 pcb material?
Shengyi SCGA-500 GF255 is a low-loss PTFE woven glass PCB material, specifically engineered for high-frequency applications. With a dielectric constant of 2.55(±0.04) at 10GHz, the laminate maintains outstanding dielectric stability across various frequency and temperature ranges. This is crucial for maintaining impedance control and minimizing signal distortion in high frequency circuits. Featuring a dissipation factor of 0.0014 at 10GHz, the material demonstrates a very low Df value. This reduces transmission losses, enabling reliable performance at high data rates. The value is extremely low, minimizing signal loss and ensuring high-frequency signal transmission.
The coefficient of thermal expansion (CTE) measures how much a material expands in response to temperature changes. Shengyi SCGA-500 GF255 features a Z-axis CTE of 145 ppm/°C, contributing to its suitability for thermally demanding applications where dimensional stability is essential. This UL 94V-0 rated laminate offers exceptional mechanical and electrical properties, making it a reliable choice for advanced RF and microwave circuit designs.
Additionally, Shengyi SCGA-500 GF255 delivers excellent passive intermodulation (PIM) performance, which is critical for maintaining signal purity in high-end communication systems. Designed for high-volume manufacturing, this material offers a strong balance between performance and cost-effectiveness, making it widely adopted across various industries.
The Shengyi SCGA-500 GF255 PCB material data sheet
The features of the Shengyi SCGA-500 GF255 PCB material
Consistent and Stable Dk/Df over Frequency and Temperature
The material maintains consistent Dk and Df values across a wide range of frequencies and temperatures, reducing phase variation and ensuring reliable RF performance in dynamic environments.
Ultra-Low Dielectric Constant (Dk)
With a dielectric constant (2.55±0.04 @10GHz), this laminate maintains excellent dielectric stability across frequency and temperature ranges, which is essential for maintaining impedance control and minimizing signal distortion in high frequency circuits.
Ultra-Low Dissipation Factor (Df)
With a dissipation factor (0.0014 @10GHz), the pcb material exhibits a Ultra-low Df value, reduces transmission losses, enabling reliable performance at high data rates. Exceptionally low, minimizing signal loss and ensuring high fidelity for high-frequency signal transmission.
Low Dielectric Loss Tangent
With its extremely low loss tangent, SCGA-500 GF255 minimizes power loss and supports long-range signal transmission—ideal for microwave and millimeter-wave applications. Minimizes energy loss, improving overall circuit efficiency.
Coefficient of thermal expansion (CTE)
The laminate have a CTE of 145 ppm/℃ on the Z-axis. Therefore, it is ideal in thermal-demanding applications. The CTE measures the ability a PCB material to expand in response to changes in temperature.
Low Moisture Absorption
This PTFE-based laminate exhibits very low moisture absorption, which helps maintain electrical stability even in humid conditions, enhancing long-term reliability. Critical for maintaining stable electrical properties in humid conditions and preventing delamination or swelling, especially vital in aerospace and outdoor telecom applications.
What are the applications of the Shengyi SCGA-500 GF255 PCB material?
With its robust performance across electrical, thermal, and mechanical metrics, Shengyi SCGA-500 GF255 laminate is widely adopted in various high-frequency applications, including:
Base Station Antennas
It is widely used in 5G and LTE base station antennas, where maintaining signal integrity and minimizing insertion loss are essential for optimal network performance. Radiating elements, feed networks, filters – where low loss and stable Dk are critical for efficiency and beamforming accuracy.
Satellite Communication Systems
Ideal for use in satellite transceivers and ground stations, this material supports high-frequency transmissions with excellent phase stability and minimal signal degradation. LNB/BNC interfaces, transceiver boards, up/down converters – requiring stability across extreme temperatures and low moisture uptake.
Filters, Couplers, LNAs, Power Amplifiers
Due to its ultra-low loss and stable Dk/Df, SCGA-500 GF255 is well-suited for manufacturing critical RF components such as filters, couplers, low-noise amplifiers (LNAs), and power amplifiers. Supports high-Q circuit design with minimal insertion loss.
These advanced antenna systems require precise control over phase and amplitude—SCGA-500 GF255 provides the necessary electrical consistency and mechanical rigidity to meet these demands. Offers stable performance across array elements, critical for beam-steering applications.
Avionics and Aerospace Electronics
With its low moisture absorption, stable electrical properties, and compatibility with high-reliability requirements, SCGA-500 GF255 is ideal for use in aerospace radar systems, navigation modules, and airborne communication devices.
Manufacturing advantages of the Shengyi SCGA-500 GF255 PCB material
Choosing Shengyi SCGA-500 GF255 laminate isn’t just about technical specs, it offers significant practical benefits for manufacturers:
Extreme Low Signal Loss
SCGA-500 GF255 ensures minimal RF energy dissipation, supporting high-efficiency signal transmission in high frequency circuits. The fundamental PTFE advantage, enabling higher frequency operation, longer signal paths, and improved system efficiency compared to standard FR-4 or even high-performance epoxies.
Compatibility with Standard FR-4 PCB Processes
Despite being a high-performance RF laminate, SCGA-500 GF255 laminate can be processed using standard FR-4 fabrication techniques, including etching, drilling, and plating—making it easy to integrate into existing production lines.
Excellent Price Performance Value
Compared to other high-end PTFE or ceramic-based microwave substrates, SCGA-500 GF255 offers a more cost-effective solution without compromising on critical RF performance metrics.
The Shengyi SCGA-500 GF255 PTFE laminate is a compelling solution for engineers and designers seeking high-frequency performance without exceeding budget constraints. By choosing SCGA-500 GF255 laminate, manufacturers can achieve superior performance, enhanced safety, and extended product lifetimes.
If you have any further questions, please feel free to leave a comment below or contact QFPCB by email ([email protected]).
