FYP Sem II : Week 7

Title of Activity:

Making the PCB Fabrication

Analysis:

1) PCB Drawing: 

     Designed using Protel DXP 2005. Once the PCB layout has been correctly design, it is now prints out the layout on the A4 size transparent OHP paper. Only laser printer and the carbon type of printer such as Photostat machine are allowed to print the PCB layout. 

2) PCB Cutting: 

      Cut photo PCB size according to the film size and OHP paper according to PCB size. 

3) PCB Photo Etching: 

Exposing the photo PCB in photo etching kit or can be using iron to transfer the ink into PCB board in about 8 to10 minutes.

4) PCB Redrawing: 

Redraw the remaining circuit design by using PCB marker or any marker.

5) Acid Etching: 

The purpose of etching is to remove unwanted copper from the PCB surface to achieve circuit design requirements. The etching process takes around 30 minutes to finish.

6)Thinner Washing:

This is a process to remove the remaining copper on the PCB board in order to solder the components. This also can be done by putting some aerosol to remove the remaining copper.

Conclusion:

I learned how to do the PCB fabrication. It is the basic step to make a circuit on a PCB board. The same process will be done if any damage occurred on the previous circuit.