IsoClad Series laminates are nonwoven fiberglass/PTFE composites specifically engineered for use as printed circuit board substrates. When compared to other nonwoven fiberglass/PTFE laminates with similar dielectric constants, IsoClad products demonstrate superior dimensional stability and improved dielectric constant uniformity, which can be attributed to their distinctive fiber arrangement and advanced manufacturing process.
In this article, we’ll discuss what really characterizes the Rogers IsoClad 917 and IsoClad 933 Series PTFE laminates. 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 print circuit board, so please feel free to contact us.
What is The Rogers IsoClad® Series Laminates?
IsoClad Series laminates are nonwoven fiberglass/PTFE composites specifically designed for use as printed circuit board substrates. The nonwoven structure, composed of longer random fibers and processed through a proprietary method, allows these laminates to be more readily employed in applications requiring bending or conforming to specific shapes. Conformal or “wrap-around” antennas serve as prime examples.
Compared to competitive nonwoven fiberglass/PTFE laminates with similar dielectric constants, IsoClad products exhibit superior dimensional stability and enhanced dielectric constant uniformity due to their unique fiber arrangement and manufacturing process.
IsoClad 917 laminates (Er=2.17, 2.20) use a low ratio of fiberglass/PTFE to achieve the lowest dielectric constant and dissipation factor available in a combination of PTFE and fiberglass.
IsoClad 933 laminates (Er=2.33) use a higher fiberglass/PTFE ratio for a more highly reinforced combination that offers better dimensional stability and increased mechanical strength.
Rogers Corporation offers the IsoClad 917 and IsoClad 933 series PTFE laminates, which are designed to meet the stringent demands of aerospace, defense, and communication systems. These materials provide excellent electrical and mechanical properties, making them ideal for advanced circuit designs.
Rogers IsoClad® Series Laminates Data Sheet
Features of The Rogers IsoClad® Series Laminates
Low Dielectric Constant (Dk)
The IsoClad 917 and IsoClad 933 series boast a low dielectric constant (Dk ≈ 2.2–2.33 at 10 GHz), minimizing signal propagation delays and phase distortions. This makes them ideal for high-speed digital and analog circuits where signal integrity is paramount. One of the standout features of IsoClad 917 and IsoClad 933 is their low dielectric constant. This characteristic ensures minimal signal distortion and enhanced signal integrity, making them suitable for high-frequency applications.
Extremely Low Loss Tangent (Df)
With an ultra-low dissipation factor (Df < 0.0016 at 10 GHz), these laminates minimize signal loss at microwave frequencies. This characteristic is crucial for applications requiring high efficiency, such as radar systems and satellite communications. IsoClad 917 and IsoClad 933 offer extremely low dielectric loss, which is critical for applications requiring efficient power transmission and minimal signal attenuation. Their low loss tangents contribute to high-performance RF and microwave circuit designs.
Nonwoven Fiberglass Reinforcement
Unlike traditional laminates that use woven fiberglass, the IsoClad series employs nonwoven fiberglass reinforcement. This structural choice provides uniformity in electrical properties while maintaining mechanical flexibility.Offers consistent electrical and mechanical properties throughout the material, contributing to reliable performance.
Applications of The Rogers IsoClad® Series Laminates
Due to their superior electrical and mechanical properties, Rogers IsoClad 917 and IsoClad 933 laminates are widely used in various advanced applications, including:
Conformal Antennas
Their flexibility and isotropic properties allow seamless integration into conformal antenna structures. Their flexibility and low-loss properties allow integration into curved surfaces, enabling compact, aerodynamic designs for UAVs, aircraft, and vehicles.
Stripline and Microstrip Circuits
Their unique combination of electrical, mechanical, and environmental properties makes them well-suited for high-frequency applications requiring exceptional performance and reliability. The low dielectric loss and controlled dielectric constant make these laminates ideal for high-frequency circuit designs. The consistent dielectric properties support precise impedance control, essential for filters, couplers, and amplifiers.
Missile Guidance Systems
IsoClad 917 and IsoClad 933 series PTFE laminates are advanced composite materials specifically engineered for use in missile guidance systems. These materials play a critical role in ensuring the reliability, performance, and durability of these sophisticated systems. To fully appreciate the significance of these laminates, it is important to understand both their unique properties and the demanding requirements of missile guidance applications.
Missile guidance systems require materials that can withstand extreme environmental conditions while maintaining high levels of electrical performance and mechanical stability. High-frequency stability ensures accurate signal transmission in harsh environments. The stable electrical properties ensure reliable signal transmission in critical defense applications.
Radar and Electronic Warfare Systems
The materials’ low loss characteristics enhance signal fidelity, crucial for radar and EW applications. Low loss and thermal resilience enhance detection range and signal clarity in phased-array radars and jamming systems. Enables advanced communication systems to achieve superior performance in demanding environments.
Manufacturing Advantages of Rogers IsoClad® Series Laminates
Beyond their excellent electrical and mechanical properties, IsoClad 917 and IsoClad 933 offer significant advantages in manufacturing and processing:
Less Rigid than Woven Fiberglass
The nonwoven fiberglass reinforcement reduces brittleness, making the material easier to drill, cut, and route without delamination or fiber breakout. This is particularly beneficial for complex multilayer designs. The nonwoven fiberglass reinforcement results in a laminate that is less rigid than conventional woven fiberglass-reinforced materials. This flexibility allows for easier handling and processing during fabrication.
Highly Isotropic in X, Y, and Z Directions
The uniform distribution of nonwoven glass ensures consistent mechanical and electrical behavior in all axes. This isotropy eliminates performance variations caused by directional dependencies, simplifying design validation and improving yield rates. A key benefit of these laminates is their high isotropy in all three directions (X, Y, and Z). This ensures uniform electrical performance across the entire substrate, making them particularly advantageous for complex microwave designs where consistency is crucial.
Compatibility with Standard Processes
These laminates work seamlessly with conventional PCB manufacturing techniques, including etching, plating, and soldering, reducing time to market for high-frequency prototypes and production runs.
Rogers IsoClad® Series PCB Materials Standard Offerings
Ultimately, Rogers IsoClad 917 and IsoClad 933 series PTFE laminates offer a compelling combination of low dielectric constant, extremely low loss, and mechanical flexibility. Their unique nonwoven fiberglass reinforcement provides processing advantages while maintaining excellent electrical performance. By combining ultra-low loss, thermal resilience, and fabrication-friendly properties, they empower engineers to push the boundaries of high-frequency design. To learn more about integrating IsoClad laminates into your next project, consult QFPCB Corporation’s technical resources or reach out to their engineering support team.
If you have any further questions, please feel free to leave a comment below or contact QFPCB by email ([email protected]).
