PCB Technical - What are the advantages of Teflon PCB?

For high frequency circuits, the best performance PCB substrate material is Teflon PCB. Because Teflon (PTFE) is a heat-resistant, non-toxic, acid-base resistant material, and is not contaminated by metals released by corrosion or impurities contained in it. Teflon can be used for the production of PCB. Teflon PCB is generally used in airplanes, rockets and high-performance electronic instruments.

High-frequency PCB and high-speed PCB need to have good dielectric properties: low transmission loss, short transmission delay time, and low signal transmission distortion. Teflon PCB material.

There are currently many types of high-speed and high-frequency PCB substrate materials. But they have a common feature, that is, the material used in the PCB substrate material, generally resin, and its dielectric constant and dielectric loss factors are very low or low. The dielectric constant of the resin used in the PCB substrate material and the level of dielectric loss factors are mainly affected by the degree of polarization of the resin structure itself. The greater the degree of polarization, the higher the dielectric constant value. For this reason, the characteristics of a high-speed and high-frequency substrate material are good or bad, the type of resin it uses, and more specifically the molecular structure of the resin it uses, is quite critical and important.

What are the advantages of Teflon PCB?

The PCB board using Teflon not only provides mechanical support, but also plays a role in connecting the components installed on it. Therefore, for PCB designers, it is necessary to understand the entire physical size of the panel (outer frame size) ), the location of the mounting hole, height restrictions and related details. ipcb company introduced the advantages of using Teflon PCB:

1.High wiring density, small size and light weight, which is conducive to the miniaturization of electronic equipment.

2.Due to the repeatability and consistency of the graphics, the errors in wiring and assembly are reduced, and the maintenance, debugging and inspection time of the equipment is saved.

3. It is conducive to mechanization and automated production, which improves labor productivity and reduces the cost of electronic equipment.

4. The design can be standardized to facilitate interchangeability.

5.Bending resistance, precision, and better application to high-precision instruments.

Microwave high frequency PCB refers to a special PCB with high electromagnetic frequency, used for high frequency (frequency greater than 300MHZ or wavelength. Generally speaking, high frequency PCB board can be defined as a circuit board with frequency above 1GHz. The substrate material needs to have excellent electrical properties., Good chemical stability, with the increase of power signal frequency, the loss on the substrate is very small, so the importance of Teflon PCB is shown.