Duanxx's alicloud designer Learning: the differences between pad and

1. Differences

Here, we can see that the pad is slightly larger on the left, while the via is slightly smaller on the right. The best answer to the difference between Baidu search is:

Pad is a pad, also called a plug-in hole, used to place the plug-in

Via is a cross hole used for the link between the upper and lower layers. There will be a welding layer above, which is our common green oil.

2. Simulation diagram description

Actually:

Pad is the exposed copper surface that can be used for soldering on the PCB.

It has two types: No perforation and no perforation, that is, the pin of our commonly used encapsulated device is placed, that is, the pad without perforation.

Perforation, the above can use solder welding pin, such as our commonly used pin hole, is the perforation pad, the left is the perforation pad.

Generally, we also use pad for mechanical holes.

Via is the conductive holes on the PCB. It is mainly used for electrical connections between two layers.

 

See the differences between pad and:

The two red boxes on the left are pad, and the first is perforated, and the bottom is non-perforated.

The one on the right is.

Three attribute differences

Pad attributes:

You can see that:

Pad Size and shape

Top paste and bottom paste can be coated with solder.

Has the layer and net attributes, but the layer attribute has only one

Via attributes:

Via does not have as many attributes as pad, so it cannot be coated with solder.

However, the channel has two layer attributes, and the net attribute has only one.

Duanxx's alicloud designer Learning: the differences between pad and