PCB etching design

The copper layer of the bọọdụ sekit biri ebi is the focus of any circuit design, the other layers only support or protect the circuit, or simplify the assembly process. For A budding PCB designer, the main focus is simply to get the connection from point A to point B with as few problems as possible.

The copper layer of the printed circuit board is the focus of any circuit design, the other layers only support or protect the circuit, or simplify the assembly process. For A budding PCB designer, the main focus is simply to get the connection from point A to point B with as few problems as possible.

ipcb

However, with time and experience, PCB designers focus more on:

elaboration

nka

Space utilization

Omume zuru ezu

Low cost board

Availability comes at the cost of speed and quality

Homemade PCB

Relatively common due to turnaround time

Ọkachamara PCB

Use more advanced methods to extensively improve its functionality and tolerance

L Take advantage of etching techniques and better equipment and expertise

Due to the enormous influence of expertise, the difference between amateur and professional committees became more pronounced as tolerances increased

The distinction between affordable and quality housing has also become clearer

PCB etching steps:

1. Evenly apply the photoresist to the copper clad plate

The photoresist is sensitive to ultraviolet light and hardens after exposure. The photoresist is then covered with a negative of the image of the copper layer on the plate.

2. Strong ultraviolet light is used to expose the bottom cover of the circuit board

Strong ultraviolet light will harden areas that should remain copper plates. The technology is similar to that used to make semiconductors with tens of nanometers in size, so it is perfectly capable of having excellent characteristics.

3. Immerse the entire circuit board in solution to remove hardened photoresist

4. Use copper etcher to remove unwanted copper

An interesting challenge in the etching step is the need to perform anisotropic etching. When the copper is etched downward, the edge of the protected copper is exposed and left unprotected. The finer the trace, the smaller the proportion of the protected top layer to the exposed side layer.

5. Drill holes in the PCB

From plating through holes to mounting holes, these holes can be used for all different uses in PCB. Once these holes are made, copper is deposited inside the hole walls using electroless copper deposition to form an electrical connection across the board.

The manufacturing mode and design mode of PCB can not be ignored or can not be ignored. Although a designer doesn’t need years of PCB manufacturing and assembly experience, a solid understanding of how to do these things will give you a better understanding of how and why good PCB design works.