Home > categories > Electronic Components & Supplies > PCB & PCBA > What is the difference between the pad and the vias in a printed circuit board?
Question:

What is the difference between the pad and the vias in a printed circuit board?

What is the difference between the pad and the vias in a printed circuit board?

Answer:

Throughholes are also known as metallized holes. In the double and multi-layer board, in order to connect the printed wire between the layers, in the layers need to connect the wire at the intersection of drilling a common hole, that is, through the hole.
Pad and vias are two completely different concepts, the role of the pad is the chip pin welding place, the role of the hole is the most to create a multilayer board when the connection between the upper and lower board.
The parameters of the via hole are the hole diameter and the borehole size. Hole itself exists on the ground parasitic capacitance, but also the existence of parasitic inductance, often also give the circuit design to bring a lot of negative effects.
A land or pad, a basic unit of surface mount assembly, used to form the land pattern of the circuit board, that is, a variety of combinations of pads designed for special component types.

Share to: