Vias

The final “main component” of a PCB would be the ever useful via. Vias are used in multi-layer boards to electrically connect one layer to another.
There are essentially three types of vias, only one of which is common in the hobbyist world. These via types are:
Through hole - Most common type of via, a hole is drilled through the whole board and then electroplated so that it is conductive.
Blind - A blind via is used in designs with more than two layers to connect a surface layer to an internal layer without going all the way through.
Buried - Buried vias are similar to blind vias but are only used to connect internal layers.

Following will be continued in next chapter.

Shirley Xia
Oversea sales
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