How to Use Via-in-Pad for PCB Design and Manufacturing

 Multi-layered printed circuit board design requires a means to establish connections between various layers. This is done using vias ranging from through-hole vias to via-in-pad technology. While traces serve as horizontal connection elements, vias function as vertical connection elements, enabling signal and power to travel between board layers. To get more news about Cavity PCB, you can visit pcbmake official website.

Before we talk about via-in-pad technology, let’s have a look at the different types of vias that are frequently used in PCB design based on functionality:
Most PCBs contain these vias to establish connectivity between PCB layers:
Through-Hole Via
This is the most common via type and is a hole drilled through all layers of a PCB. It is the simplest via type and is most cost-effective. It however takes up more space on your PCB, reducing space required for components.
Blind Via
This via connects the external layers with the internal layers of the PCB without going through the whole PCB.
Buried Via
Buried vias connect internal layers of the PCB, are more complex to create and come at a higher cost. These holes originate and end in the internal layers of the PCB and are not visible from the exterior.Here the via is placed directly on the copper pad of a surface-mounted component and plated with copper (VIPPO), as opposed to a conventional via in which the signal carrying trace is routed away from the pad (dog-bone), to the via. A via-in-pad serves the function of miniaturizing the PCB form factor by reducing the space taken up by trace routing. The most typical applications of these via-in-pads are with BGA components of pitches 0.5mm or less.
The use of via-in-pad technology minimizes signal path lengths which cuts down on the parasitic inductance and capacitance effect.
VIP routing is used when the board size is limited, the design components have very small footprints, and when the surface routing options are restricted by design. VIP routing is typically used with BGAs.
There are other advantages for the PCB as well when using VIP routing. When you compare via-in-pad to other routing options,

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