Vertical interconnect access (or via) are small electrical connections that enable the transfer of electrical signals between different layers of a Printed Circuit Board (PCB). If we consider the tracks to be present in the x and y axes of the board, vias exist in the z...
In printed circuit boards (PCBs), vias provide electrical connections between layers of the board. While basic through-hole vias span the entire board, more advanced via structures called blind vias and buried vias connect only between adjacent layers without passing completely through the board....
PCB vias Via holes are also called metallized holes. In double-sided and multi-layer boards, in order to connect the printed wires between the layers, a common hole, that is, a via hole, is drilled at the intersection of the wires that need to be connected in each layer. Vias are use...
The diagram on the left shows a cross-section of a PCB. Imagine it as a nest of ants inside a glass jar. This particular PCB has six layers of copper foils, like a building with six floors. Each copper layer represents a floor, and the vias are like staircases that connect different ...
Although small and sometimes very small, vias are extremely important parts of the circuit board landscape. In fact, in the world of surface mountcomponents, vias are the only means to interconnect copper traces on different layers on a PCB, where earlier, leads of components would do the job...
Printed circuit boards (PCBs) contain plated through holes and vias to allow mounting of electronic components and electrically connecting traces across layers. Castellated holes are a special type of plated through hole that provide a unique way to extend PCB connections to external devices or boards...
Buried Vias Buried vias are drilled holes that connect two or more internal layers of a PCB, but they do not go through the outer layers of the board. This means that they are not visible from the outside, hence the name "buried" vias. Buried vias are typically used in multilayer PCBs...
Hot Vias are a specialized type of via designed for high-frequency applications in printed circuit boards (PCBs). Unlike traditional vias that primarily serve as ground or power connections, hot vias carry high-speed signals between different layers of a PCB. These vias are essential for maintaini...
For microwave circuit boards, the wavelength is further reduced, and due to the current PCB production process, the spacing between holes cannot be made very small. At this time, the spacing between the holes is already 1/20 of the wavelength. The method of drilling shielded vias around the...
but it doesn’t go all the way through. It’s called “blind” because you can’t see through to the other side. Blind vias are used to save space on the PCB. However, it requires careful drilling depth (in the Z-axis), and it often presents challenges in plating the hole, so it...