General

PCB: 8 metallized holes

userHead Roman.Roman 2025-04-24 22:02:33 841 Views4 Replies

What is the purpose of 8 metallized holes in the mounting pads (see picture)? Why are there 8 holes and not 4 or 6?

2025-04-27 00:46:47

Thanks for the answer. But I have more questions. Why are there no 8 holes in the DS3231M, Fermion: AS7341 (and so on) modules (see the pictures below)? If I understand correctly, the contact pads are only needed for mechanical fastening of the modules. If they were connected to the GND, then 8 holes would improve the electrical contact. But the contact pads are isolated from the circuit's radio components. Then why do we need 8 metallized holes at all?

userHeadPic Roman.Roman