When it comes to printed circuit board manufacturing, there are a variety of PCB via process requirements to consider. Each has their own pros, cons, and cost adders so knowing these requirements can aid you when designing your circuit boards. In this post we will discuss the differences for why you would either fill or plug a circuit board via.
The amount of heavy copper applied to the plated through-holes (PTH) plays a critical factor of the overall reliability of the printed circuit board. There are two key elements to consider. The first is the current capacity of the barrel for acceptable heat rise. The second is the mechanical strength determined by the copper thickness, hole-size and whether or not there are any support vias.
Plated through holes are the holes in a printed circuit board (PCB) with copper coated walls. These holes allow electricity to be carried from one side of the circuit board through the copper in the hole to the other side of the board. On any printed circuit board of two or more circuitry layers, plated through holes form the electrical interconnection between the different layers.