Products Description
2-Layer F4B High Frequency PCB is a kind of circuit board designed for high frequency signal transmission, which usually adopts polytetrafluoroethylene (PTFE) as the substrate, and this material is known for its excellent electrical performance and stable physical properties. Below are the functions and roles of 2-Layer F4B High Frequency PCB circuit boards, as well as some of the related applications and processing requirements:
F4BTMS233 is a high performance PTFE (polytetrafluoroethylene) based high frequency circuit board material produced by Wanling, which is an upgraded product of the F4BTM series. This material has been dramatically enhanced by the addition of large amounts of ceramics and reinforced with ultra-thin, ultra-fine glass fiber cloth to provide a wider range of dielectric constants, making it an aerospace-grade, high-reliability material.
The Following are the Characteristics of F4BTMS233 Sheet:
Dielectric Properties:
Dielectric Constant (Dk): 2.33±0.03 (under 10 GHz test conditions)
Loss Factor (Df): 0.0010 (under 10GHz test conditions)
Temperature Coefficient:
TcDk (temperature coefficient of dielectric constant): -122 ppm/°C
Coefficient of Thermal Expansion:
CTE-Z (coefficient of thermal expansion in the Z axis): 220 ppm/°C
Material Composition:
Composed of PTFE, special nano-ceramics and ultra-thin, ultra-fine glass fiber cloth with RTF (Rough Top Finish) copper foil as standard.
Product Features:
Small dielectric constant tolerance, good batch-to-batch consistency.
Ultra-low dielectric loss for high frequency applications.
Stable dielectric constant and low loss values up to 40 GHz for phase sensitive applications.
Excellent coefficient of variation of dielectric constant and dielectric loss with temperature, maintaining excellent frequency stability and phase stability between -55℃ and 150℃.
Excellent anti-irradiation performance, even after dose irradiation treatment, still maintain stable dielectric properties and physical properties.
Low outgassing performance, in line with aerospace vacuum outgassing requirements.
Small coefficient of thermal expansion in X/Y/Z direction, ensuring dimensional thermal stability and reliability of hole copper.
Good thermal conductivity, adapting to larger power applications.
Excellent dimensional stability.
Low water absorption.
2-Layer F4B High Frequency Circuit Board Application Areas:
Wireless Communications: Including cellular phones, base stations, satellite communication equipment, etc.
Aerospace: Used in navigation and communication systems for spacecraft.
Medical Equipment: Such as high frequency circuits in MRI (magnetic resonance imaging) equipment.
Test and Measurement: High-speed data acquisition and signal processing equipment.
Automotive Electronics: Including radar, in-vehicle communications, and engine controllers.
Military and Radar Systems: For military communications and radar detection systems.
2-Layer F4B High Frequency PCB Processing Requirements:
Accurate Drilling: Use laser drilling or mechanical drilling technology to ensure the accuracy of the hole position and the finish of the hole wall.
Lamination Process: High temperature and high pressure lamination processes are used to ensure a tight bond between layers.
Pattern Transfer: Precise transfer of circuit patterns onto the board by means of exposure machines or LDI (Laser Direct Imaging) technology.
Etching: Using chemical or laser etching technology, excess copper layers are removed to form the desired circuit pattern.
Surface Treatment: Depositing gold, tin, OSP (anti-oxidation) and other surface treatments according to the needs of the final product.
Impedance Control: Precisely control the impedance of the circuit to ensure stable signal transmission.
Quality Inspection: Strict quality inspection, including impedance test, thermal performance test, etc.
Environment Control: Processing in a constant temperature and humidity environment to minimize the impact of environmental factors on the performance of the board.
Due to its excellent high frequency characteristics, 2-layer F4B high frequency PCB circuit boards are widely used in high-end electronic devices that require high frequency signal processing. With the continuous progress of electronic technology, the performance requirements of high frequency board materials are also increasing, F4B material has become the ideal choice for high frequency applications due to its excellent performance.
