What is Teflon PCB?
Teflon PCB in high-end electronics use Teflon lamination material. The scientific name of polytetrafluoroethylene is polytetrafluoroethylene (Teflon PCB). It is insoluble in almost all solvents. At the same time, it has the characteristics of high temperature resistance, and its dielectric coefficient is very low, therefore, Teflon pcb is an ideal high frequency PCB material.
What is the outstanding performance of Teflon PCB?
1. High temperature resistance: long-term use temperature 200~260 degrees.
2. Low temperature resistance: still soft at -100 degrees.
3. Corrosion resistance: resistant to aqua regia and all organic solvents.
4. Weather resistance: the best aging life of plastics.
5. High lubricity: Lowest coefficient of friction in plastics (0.04).
6. Non-viscous: In the solid material, it has the smallest surface tension and does not adhere to any substance. It is physiologically inert.
7. It has excellent electrical performance and is an ideal Class C insulation material. A thick layer of newspaper can block 1500V high pressure; It's smoother than ice.
Polytetrafluoroethylene has excellent comprehensive performance, high temperature resistance, corrosion resistance, non-stick, self-lubrication, excellent dielectric performance and very low friction coefficient. In Teflon PCB, polytetrafluoroethylene is a very efficient high-frequency PCB material, which is very suitable for application in radar, high-frequency communication equipment, radio equipment and other fields. Usually, the general teflon pcb manufacturer rarely uses this Teflon board, and SeekPCB can provide Teflon PCB to meet the various PCB needs of customers. At present, in the manufacture of Teflon PCB board, Teflon PCB data can achieve pure compression of 4~6 layers; 4-8 layers of mixed compression.
Teflon circuit board mainly includes the following categories:
1. Input
Both teflon PCB and low-frequency power supply circuits have the effect of voltage gain and output power collection. Resonant differential amplifier circuit, which refers to the resonant frequency FO, for optical fiber broadband differential amplifier circuit, it refers to a 1 frequency region.
2. Passband
The concept of low-frequency power PCB is not bad. For the resonant differential amplifier circuit, when the normalized amplitude of the resonant frequency f0 drops to 0.707, most pointers refer to the value between the two corresponding frequencies. For a fiber wide 1-band amplifier circuit, it refers to a signal corresponding to a certain frequency.
3. Selectivity
This selectivity is mainly for the resonant amplifier circuit, which characterizes the circuit's selection of useful signals and its ability to suppress unnecessary signals. It is usually measured by rectangle coefficient and rejection ratio according to the resonant characteristic curve of the circuit.
4. Noise factor
When the amplifier circuit is working, due to some factors, the wave will move irregularly, forming noise inside the circuit, thus affecting the quality of the signal. This effect is usually described by the ratio of signal power PS to noise power PN (SNR)1. The noise figure is the comparison between the input signal noise and the output signal noise.
5. Stability
The stability of high frequency Teflon PCB refers to the stability of its main performance when the working state or working conditions change. For example, when the ambient temperature changes or the power supply voltage fluctuations, it will affect the normal DC operation of the amplifier circuit; The parameters of the circuit components will also change accordingly, which will cause the gain of the amplifier circuit to change, and the frequency shift and resonance curve of the center to change sharply. Ultimately, it may not work at all.
High frequency Teflon PCB mainly has high income, high reception signal, wide range, low noise factor, and high stability. First, high-frequency Teflon PCB refers to PCB with high electromagnetic frequency used in high frequency (frequency greater than 300MHz or frequency band length less than 1m) and microwave (frequency greater than 3GHz or wavelength less than 0.1m). It is a PCB produced on a microwave polytetrafluoroethylene copper clad board using a common rigid circuit board manufacturing method or a special processing method. In general, high-frequency Teflon PCB can be considered as PCB with frequencies higher than 1GHz.
With the rapid development of science and technology, many types of equipment are planned in the microwave frequency band (>1GHz) or even millimeter wave (30ghz) range. It can be seen that the frequency is getting higher and higher, and the requirements for Teflon PCB board are also getting higher and higher. For example, the substrate needs to have high quality electrical performance and chemical stability. With the addition of the power signal frequency, the loss of the plate is very small, and the importance of high-frequency Teflon PCB is becoming increasingly prominent.
High frequency Teflon PCB application range:
1. Related to lighting and communication systems.
2. Power amplifier, low noise amplifier, etc.
3. Passive components, such as power dividers, couplers, diplexers, filters, etc.
4. In the automotive collision avoidance systems, satellite systems and radio systems, high-frequency electronic equipment is a development trend.
SeekPCB is a Teflon PCB manufacturer. Offer a variety of well-known brands of Teflon PCB, such as Rogers Teflon PCB, Konik Teflon PCB, and prepare enough Teflon PCB onboard to meet your quick needs.
