why different hole sizes in tiny silver dots?

217 views

Like this one [here](https://www.auspienterprises.com/wp-content/uploads/2021/12/PCB1-1.jpg)

In: 0

3 Answers

Anonymous 0 Comments

Those are passthrough holes for different components. Not all components have the same size posts. Higher amperage components need bigger posts as not to melt. This PCB has several configurations so all the through holes won’t be used. Cheaper this way.

You are viewing 1 out of 3 answers, click here to view all answers.