/PCB Via Size-Complete Information It’s Here

PCB Via Size-Complete Information It’s Here

PCB Via Size-Complete Information It’s Here

Abstract

PCB is a multi-floor construction with various passages and links between two or more adjacent floors. As complex, as it sounds designing and implementing a multilayer PCB, is the very complicated process. PCB via or vertical interconnection access connects two points that are located on different layers of the PCB. Vias pass current on various electronic devices, for instance, the integrated circuit uses embedded vias surrounded by SiO2 to link between two substrates. PCB via size are the key features in the multilayer PCB. Via construction consists of three major components, a metal plated hole, solder pads on either side and insulation and clearance along the entire via.

PCB via size

 

Content

1.PCB via types

2.Standard PCB via size

3.PCB aspect ratio

 

1.PCB via types

PCB vias are classified into three different types. Through hole vias, blind via and buried via. As the name implies, each type is classified based on their location on a printed circuit board. Through hole via connects the top and bottom layer of the PCB by cutting through the inner layers. These type of vias are usually the cheapest and easy to construct type as it only needs a plated through hole which is either driller or laser cut. Blind via are usually located on the sides to separate them for the rest of the tracks as it mostly connects power and ground rails to the inner layers. Buried via is embedded into the PCB as it connects the two inner layer points. It is very delicate to drill the Z-axis holes for blind and buried via.

PCB via size

 

2.Standard PCB via size

As vias are hole most of the manufacturers can handle any of the standard drill sizes. But it is important to note that the production process will be efficient if all the vias in the boards are of the same size. This will make the drilling process easier and saves a considerable time thus saving production cost. Vias from drills start from 0.15mm with 0.3mm solder pad and can drill as big as requested, but different sizes may require manual drilling which increases the production cost. Holes smaller than 0.15mm can only be drilled by laser drill. Via with 0.6mm hole and a 1mm solder pad is the most common size that can be fud on most of the PCBs.

 

PCB via size

 

3.PCB aspect ratio

PCB’s aspect ratio can be defined as the ratio between the thickness of the board and the diameter of the drilled hole. A ratio of 6:1 or more must be achieved to dub the process as efficient. The ratio determines the surface area of the hole and current capacity of the via.

 

PCB via size

Fill out my online form.
By |2018-09-20T15:31:53+00:00June 7th, 2018|Update|Comments Off on PCB Via Size-Complete Information It’s Here
OurPCB CEO

 
 

Fill out my online form.