High Frequency PCB processing attention points
1. The impedance control requirements are relatively strict, and the relative line width control is very strict, with a general tolerance of about 2%.
2. Due to the special plate, the adhesion of PTH copper sinking is not high. Usually, it is necessary to use plasma treatment equipment to roughen the vias and the surface to increase the adhesion of PTH hole copper and solder resist ink.
3. Do not grind the board before making the solder mask, otherwise the adhesion will be very poor, and it can only be roughened with micro-erosion potion.
4. Most of the plates are PTFE materials, and there will be many burrs when forming with ordinary milling cutters, so special milling cutters are required.
5.
High Frequency PCB is a special circuit board with high electromagnetic frequency. Generally speaking, high frequency can be defined as the frequency above 1GHz.
Its physical properties, precision, and technical parameters are very demanding, and are often used in automotive anti-collision systems, satellite systems, radio systems and other fields.
