Multi-Layer PCB:What is Via
A via is used to make an electrical connection between the layers of a Multi-Layer PCB. Connecting multiple layers of the board make it possible to reduce the size of the PCB. A via is constructed by placing copper pads on each layer of the PCB and drilling a hole through them. The hole is made conductive through electroplating or by placing copper cylinders directly in the drilled holes.
The inner part of the via, is usually filled with a non-conductive material (air in most cases), while the outer layer of the cylinder has a conductive plating which is used to connect each layer of the Multi-Layer PCB.
Note: It is always good to use multiple smaller vias than one large via since it reduces the inductance and also provides an additional path to the current flow if any of the via fails.
Types of Vias
There are three main types of Vias used in a Printed Circuit Board:
Through Hole Via: This Via goes right through the Multi-Layer PCB from top to bottom and can be used to connect all the layers of a PCB. It is the most common via and is easiest to construct.
Blind Via: This Via connects the outer most layer of a PCB to the next layer. It can not be seen on the other side of the board and is therefore called blind via.
Buried Via: This Via can be used to connect internal layers of a PCB. It will not be seen on the surface of the board.
Other news about S&L
- Celebrating the Establishment of SUNLYNN CIRCUITS(THAILAND)
- Good News! Sun&Lynn Circuits Co.,Ltd. is honored as one of the Top 100 Innovative Enterprises in Bao
- What Should You Know about Metal Core PCB?
- FPC supplier : the types of Flexible PCB
- PCB manufacturer China:Why PCB board snake line, what is it used for?
- What is Metal Core PCB and types of Metal Core PCB?
- Why are High frequency PCBs much more expensive than normal PCBs?
- Flexible PCB supplier China :When to use flexible PCB?
- Flexible PCB manufacturer:What Is Flex Soldering?
- What Is Automotive PCB? Why we use automotive PCB?
Your browsing history
- What is High frequency PCB V-Scoring
- GE
- What are the impedances involved in the Automotive PCB
- PCB supplier china :How to prevent Lamination voids
- Flexible PCB manufacturer:Development Opportunity and Challenge of Flexible PCB
- PCB factory china:4 Tips on How to Design PCBs for High Currents
- Quick Turn Health care PCB Prototypes
- Amphenol
- Flexible PCB manufacturer tells you what is Multi-layer Flexible PCBs
- What is Health care PCB routing?
A total of -comments【I want to comment】