PCB board is important in the electronic industry and other modules. It is important for working of different circuits and projects that has connected components. Now all boards are made with the same featues. For high-frequency applications PTFE boards are used they have different features that will be covered here
What is PTFE PCB?
- Teflon PCB is a high-frequency PCB board made with the use of polytetrafluoroethylene (PTFE) as PCB substrate.
- Teflon board flow signal of 5GZ and high frequency and Teflon is the name of the brand that Dupont Corporation uses for its PTFE materials, and that known as Teflon PCB to refer to PTFE substrate boards used for microwave and RF applications.
PTFE material properties
- There are differnt features of material used for the creation of PTFE listed here
- It provides good dielectric strength
- It has less value of the dissipation factor
- This material has High thermal stability
- Comes with the feature of chemical resistance
- This material absorbs less moisture
High-Frequency PCB, What Is It?
High-frequency boards also called HF boards are a special type of boards with high electromagnetic frequencies that offer high speed flow rates and about 100 GHz frequency range, that is applied to high-speed designs, reliable operation and complicated design, radio frequency, and wireless communication devices.
A high-frequency board comes with a low dielectric constant and low dissipation factor. It is best option for high complex electronic devices.
How to Choose a High-quality High Frequency PCB
- Select base materials having accurate Dk value. PCB with low Dk comes with high speed phase velocity thatn board that has high Dk. Circuits that are sensitive to delay accuracy, like high-speed digital circuits affect transmission lines with different phase speeds or transmission delays.
- PCB base materials having high Dk generate small wavelengths for certain frequency values that casues small circuit sizes on board.
- The coefficient of thermal expansion of the substrate is consistent with copper foil. The inconsistency can cause the copper foil to operate if the temperature varies highly.
- Use PCB board with good heat resistance, chemical resistance and deformation resistance.
PTFE PCBs from JLCPCB
- Leading suppliers and producers of PTFE PCBs are JLCPCB. With years of PCB industry expertise, JLCPCB has been a reliable partner for clients all over the world.
- Different options are available at PTFE options, they come with advanced PTFE PCB services irrespective for single-layer boad and complicated multi-layer PCB.
- You can get PTFE PCBs for $50.5 from this best PCB supplier. Save you more than $100 compared to other HF PCBs on the market.
- Here are some features of PTFE offered by the JLCPCB are listed
- PCB Thickness:0.76/1.52
- PCB Laminates: ZYF255DA(Dk=2.55, Df=0.0018)/ ZYF265D(Dk=2.65, Df=0.0019)/ ZYF300CA-C(Dk=2.94, Df=0.0016)/ ZYF300CA-P(Dk=3.00, Df=0.0018)
Advantages of PTFE Teflon PCB from JLCPCB
- PTFE Teflon board comes with the best operations for practical uses high complication and good stability features.
- It has good temperature resistance, high heat dissipation, good dielectric features, and mechanical stability.
- It is durable for use and handle oxidation resistance and UV lights, and best cost-effective solution
- Further details of the JLCPCB PTFE board can seen in this picture
How to order PTFE Teflon PCB on JLCPCB
- First of all visit the JLCPCB site: https://jlcpcb.com/ILV
- You can see the below figure add the Gerber file option to upload your Gerber file here
- Then choose the PTFE according to your project requirements
- Now choose PCB thickness and PCB Laminates
- After that choose other specifications according to need and finally save to the cart and checkout
PTFE VS FR4 PCB
Advantages of PTFE PCB Laminates
- It offers high frequency due to low dielectric constant and loss
- it has good thermal stability and chemical resistance.
- Best to use for harsh conditions
- It is stable and low thermal expansion coefficient
- Best for uses where low friction or sliding parts needed
Disadvantages of PTFE PCB Laminates
- It is higher cost than FR4 and conventional laminates
- It needed more reinforcement since have moderate mechanical strenght
- It has limited adhesion featues and needs surface treatments
- it’s manufacturing difficult due to its high melting point and chemical inertness
Advantages of FR4 PCB Laminates
- Low-cost and easy to access
- It has the best mechanical strenght and rigid structure.
- It offers moderate thermal stability
- It has flame retardant featues for industrial standards
- It is best for different types of electronic uses having moderate need
Disadvantages of FR4 PCB Laminates
- It has a higher dielectric constant than PTFE
- it has restricted stability in high temperatures
- its chemical resistance is moderate and can degrade under harsh conditions.
- It absorbs moisture that affects electrical properties
- Dimensional stability affected by temperature and humidity variations
Applications of Teflon PCBs
Military-grade Teflon boards used for
- Antenna systems,
- Communications systems,
commercial Teflon PCBs used for
- Active safety,
- Telematics and information,
- Power amplifiers,
- Handled device cellular and Wi-Fi antenna, etc.
- Communications systems,
- Antenna systems,
- Backhaul radios,
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