- Parameters of TLY-5 PCB
Taconic TLY-5 is a microwave PCB material based on polytetrafluoroethylene (PTFE), offering ultra-low dielectric loss and exceptional frequency stability. Key parameters are as follows:
Dielectric Constant (Dk):2.17 ± 0.02 (@10GHz)
Extremely low Dk ensures high-speed and accurate signal transmission in high-frequency circuits.
Dissipation Factor (Df):0.0009 (@10GHz)
Ultra-low dissipation factor minimizes signal loss, ideal for demanding RF and high-speed applications.
Coefficient of Thermal Expansion (CTE):
X, Y Direction: 15 ppm/°C
Z Direction: 23 ppm/°C
Excellent thermal expansion compatibility with copper, reducing stress during soldering and thermal cycling.
Water Absorption:<0.02%
Extremely low moisture absorption ensures stable electrical performance in humid environments.
Thermal Conductivity:0.22 W/(m·K)
While moderately conductive, it provides adequate heat dissipation for high-frequency circuits.
Heat Resistance (Tg):
No specific glass transition temperature (Tg). The inherent high-temperature resistance of PTFE allows operation between -240°C and +260°C.
Peel Strength:1.1 N/mm
Strong peel strength enhances mechanical reliability in multilayer PCBs.
Surface Roughness (Copper Foil):
Smooth copper surface reduces signal loss and enhances high-frequency performance. - Application Fields
Taconic TLY-5 is widely used in various fields due to its ultra-low loss and exceptional properties:
Wireless Communication:
Ideal for RF front-end modules, antennas, and microwave filters in 5G base stations.
Radar and Navigation Systems:
Used in both military and civilian radar systems, including aviation and marine navigation equipment, ensuring high precision and stability.
Satellite Communication:
Applied in satellite antennas and signal processing circuits for high-frequency signal transmission between satellites and ground stations.
Automotive Electronics:
Used in automotive millimeter-wave radar and advanced driver-assistance systems (ADAS) for precise target identification and distance measurement.
High-Frequency Medical Devices:
Found in RF modules of MRI imaging systems and other diagnostic equipment operating at high frequencies.
Defense and Aerospace:
Used in military-grade equipment, UAVs, and missile control systems that require high reliability and performance. - Production Description
Material Characteristics:
Taconic TLY-5 is a PTFE-based substrate reinforced with glass fiber layers, with low-loss fillers to optimize high-frequency performance while maintaining mechanical and thermal stability.
Processing Guidelines:
Drilling:
PTFE is soft, so sharp drill bits or laser drilling techniques are recommended to avoid rough holes or tearing.
Post-drilling deburring and plasma cleaning are essential to ensure clean hole walls and improve copper adhesion.
Etching:
In high-frequency circuits, the accuracy of microstrip and stripline designs is critical. Precise etching prevents signal integrity degradation.
Lamination:
Lamination processes require a controlled temperature of around 300°C, with careful control of pressure and cooling rates to ensure dimensional stability and lamination quality.
Soldering and Assembly:
TLY-5 material is high-temperature resistant and compatible with lead-free soldering, though low-temperature soldering processes are preferred to reduce thermal stress.
During assembly, care must be taken to avoid cracking or delamination due to the flexible nature of the substrate.
Quality Control:
Electrical Performance Testing: Ensures dielectric constant (Dk) and dissipation factor (Df) are within design specifications.
Thermal Performance Testing: Simulates extreme environments to test thermal expansion and reliability.
Mechanical Performance Testing: Includes peel strength and impact tests to verify durability.
Environmental Compliance:
Compliant with RoHS and REACH standards, free of halogens, making it suitable for global markets.
