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F4B PCB

Polytetrafluoroethylene (PTFE) Microwave PCB


Material: F4BM-2

Line Width : 3MIL ;

Line Spacing : 3MIL ;

Drilling Diameter : = 0.2mm ;

Thickness: 1.6mm

Number of Layers: 4 layers

Dielectric Constant :2.55

Dielectric Thickness: 1.5Tg: 260

Thermal Conductivity: 0.8w/m.k

Surface Technology: Immersion Gold

Copper Thickness: Base copper 0.50Z

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Microwave printed circuit board refers to the specific microwave substrate copper-clad plate using ordinary rigid printed circuit board manufacturing methods to produce microwave electronic components.

The current printed circuit board high-speed signal transmission line can be divided into two categories: one is a high-frequency signal transmission class, which is related to the electromagnetic waves of the radio, with sinusoidal wave transmission of signals, such as radar, radio and television and communications (cell phones, microwave communications, fiber optic communications, etc.); the other is a high-speed logic signal transmission class, this type of product to digital signal transmission, with the electromagnetic waves of the square wave transmission related to the beginning of this type of product is mainly used in the Computer, computer applications, and now has been applied to home appliances and communications electronic products.

In order to achieve high-speed transmission, the electrical characteristics of the microwave printed circuit board substrate materials have clear requirements. To achieve low loss and low delay of the transmitted signal, it is necessary to select the dielectric constant and dielectric loss angle tangent small substrate materials, generally ceramic materials, glass fiber cloth, PTFE and other thermosetting resins.

In all the resins, polytetrafluoroethylene dielectric constant (εr) and dielectric loss angle tangent (tan δ), and resistance to high and low temperatures and aging performance is good, suitable as a high-frequency substrate materials, is currently the amount of microwave printed circuit board substrate materials.

Polytetrafluoroethylene (PTFE) <a class='inkey' href='https://www.szxcepcb.com/Microwave-pcb/microwave-pcb' target='_blank'>Microwave PCB</a>

Polytetrafluoroethylene (PTFE) surface belongs to the low-energy surface, printing, painting, bonding are more difficult. In order to improve its surface properties, people are carrying out various modification studies. Plasma treatment is one of the most active research methods for surface modification. The plasma can be excited by microwaves, and through the physicochemical action of sputtering and etching of ions on the surface of the material, polar groups can be introduced into the surface of the material, or the crystalline form of the material surface can be changed.

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