CLTE™ laminates ensures minimal signal attenuation and high-efficiency energy transfer, critical for high speed circuits and millimeter-wave applications. Among PTFE-based laminates, CLTE exhibits the lowest performance variance, making it ideal for high-precision, high-reliability applications.
In this article, we’ll discuss what really characterizes the high frequency Rogers CLTE-XT PTFE 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 print circuit board, so please feel free to contact us.
What is The Rogers CLTE™ PTFE Laminate?
CLTE™ laminates have demonstrated exceptional dimensional stability and low planar Coefficient of Thermal Expansion (CTE), ensuring reliable and consistent performance for embedded resistors. Among PTFE-based laminates, CLTE laminates exhibit some of the lowest variance in performance, making them a preferred choice for applications requiring high precision and reliability.
The history of CLTE laminates dates back several decades, during which they have been extensively used in conjunction with Resistor Foil. This long-standing partnership has proven to be highly effective, as the laminate’s properties complement the functionality of resistor materials, enhancing overall circuit performance. The combination ensures that resistors maintain their specified resistance values even under varying environmental conditions, such as temperature fluctuations and mechanical stress.
Moreover, CLTE laminates are available with a wide variety of cladding options, catering to diverse application requirements. These options include electrodeposited copper, which offers excellent adhesion and uniformity; reverse-treated copper, designed to improve peel strength and reduce delamination risks; and rolled copper foil, known for its superior flexibility and durability. Additionally, other specialized cladding types are also available, allowing engineers to select the most suitable material for their specific design needs.
Rogers CLTE-XT PTFE Laminate Data Sheet
Features of The Rogers CLTE-XT PTFE Laminate
Dielectric Constant (Dk) of 2.94 at 10 GHz
With a dielectric constant (Dk) of 2.94 at 10 GHz at the same frequency, CLTE-XT ensures minimal signal degradation and excellent efficiency. Provides consistent and predictable electrical performance across a broad frequency range.
Loss Tangent of 0.0010 at 10 GHz
It’s ultra-low loss tangent of 0.0010，this material ensures minimal signal attenuation and high-efficiency energy transfer, critical for high speed circuits and millimeter-wave applications. Ensures minimal signal loss, making it ideal for high-frequency applications.
Dielectric Constant Stability with Temperature
The material maintains consistent Dk across a broad temperature range, ensuring reliable performance in environments subject to thermal fluctuations. Ensures consistent performance across varying environmental conditions.
Low Moisture Absorption of 0.02%
Rogers CLTE-XT PTFE laminate has an impressively low moisture absorption rate of 0.02%. This reduces the likelihood of material degradation due to moisture, ensuring consistent performance in humid environments.
Low Z-Axis CTE (20 ppm/°C)
The low coefficient of thermal expansion (CTE) in the Z-axis minimizes dimensional changes during temperature swings, reducing stress on plated through holes (PTH) and interconnects. Enhances reliability by maintaining structural integrity under thermal stress.
Available with Heavy Metal Backing (Aluminum, Brass, and Copper)
Available with aluminum, brass, or copper backing, the laminate offers enhanced thermal management and mechanical rigidity, ideal for applications requiring heat dissipation or structural support.
Applications of The Rogers CLTE-XT PTFE Laminate
Rogers CLTE-XT laminates are widely utilized in industries that require high-frequency stability and reliability. CLTE laminates’ tried and tested performance continues to make them a top choice for a wide range of ground-based and airborne communications and radar systems.
Advanced Driver Assistance Systems (ADAS)
Supports radar and sensor modules with low-loss signal integrity, ensuring accurate object detection and collision avoidance in automotive systems. Supporting critical automotive radar applications for enhanced safety and automation.
Patch Antennas, Phased Array Antennas
Delivers consistent performance in compact, high-gain antenna designs for 5G, IoT, and satellite communication devices. Well-suited for patch antennas and phased array antennas, providing high performance and reliability in both ground-based and airborne applications.
Power Amplifiers
Enhancing power efficiency and signal integrity in high-performance electronic systems. Maintains thermal stability and low distortion in high-power RF amplifiers, critical for base stations and radar systems.
Manufacturing Advantages of Rogers CLTE-XT PTFE Laminate
CLTE-XT laminates are engineered for superior manufacturability, offering several key benefits:
High Plated Through-Hole Reliability
Offers high plated through hole reliability, which is essential for creating strong and durable connections within multilayer boards. Enhances durability and longevity in multilayer circuit constructions.
Reduced Circuit Losses Without Sacrificing Dimensional Stability
Combines low-loss performance with tight thickness tolerances, ensuring consistent impedance control and signal integrity in multilayer designs. Ensures high-performance signal transmission while maintaining mechanical integrity.
Reduced Stress Attachment to Ceramic Active Devices
Compatible with ceramic components, the laminate’s CTE closely matches that of ceramics, reducing mechanical stress and improving solder joint reliability. Minimizes mechanical stress, improving the lifespan and performance of sensitive components.
Reliably Designed with Embedded Resistor Networks
Supports advanced circuit integration with greater reliability and efficiency. Supports integration of thin-film resistors directly into the substrate, simplifying designs and reducing component count for compact, high-density circuits.
Rogers CLTE PTFE PCB Material Standard Thickness
0.0053” (0.135 mm) ± 0.0005”
0.010” (0.254 mm) ± 0.0010”
0.020” (0.508 mm) ± 0.0020”
0.030” (0.762 mm) ± 0.0020”
Rogers CLTE-XT PTFE PCB Material Standard Thickness
0.0051” (0.130 mm) ± 0.0005”
0.0094” (0.239 mm) ± 0.0007”
0.020” (0.508 mm) ± 0.0010”
0.030” (0.762 mm) ± 0.0010”
Rogers CLTE-XT PTFE PCB Material Standard Size
18” X 12” (457 X 305mm)
18” X 24” (457 X 610mm)
Rogers CLTE-XT PTFE PCB Material Standard Copper Clad
Electrodeposited Copper Foil
1/2 oz. (18µm)
1 oz. (35µm)
Reverse Treated Electrodeposited Copper Foil
1/2 oz. (18µm)
1 oz. (35µm)
Rogers CLTE-XT PTFE laminates represent a fusion of cutting-edge material science and practical engineering. By choosing CLTE-XT, manufacturers can benefit from reduced circuit losses, enhanced thermal management, and improved manufacturing yields, positioning themselves competitively in today’s fast-paced electronics market.
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