Week 9 (Final Semester)

Title: Drilling


Objective:

• To make a hole on PCB for the component to fit in
• To master the skill  on drilling the PCB

Content:

Drill size is important to make correct holes for the correct electronic components. Difference components have difference size of leads and hence need difference pad sizes and hole. Following figure shows the difference size of drill bits and following table shows the functions of each bit. 

Difference size of drill bits and their functions. 

Analysis:

There are certain things must be considered while drilling. The most importance thing is make sure the drill bits did not cuts the diagram on the PCB. It may unconnected the circuit of PCB. And make sure the size of the drill bits is proportional for the functions just like on the table.

Conclusion:

If the drill accidentally damage the diagram on the circuit, the circuit must be fix with the soldering iron to connect back what the damage that has been done. After successfully finish the drilling, the next thing to do is to track checking and soldering the component.