To realize the electrical connection between different layers of the circuit board, via hole is born at the right moment. It functions as below:
-- Provide a conducting path: In the multi-layer circuit board, via holes can connect the circuits between each layer, to ensure that signals and power can be transmitted among different layers.
-- Fix components: With the help of via holes, components be fixed in the proper position, to achieve good electrical connection and mechanical stability.
-- Reduce the thickness of printed circuit board: Compared with the traditional wire connection, via holes can effectively reduce the overall thickness of printed circuit board.
-- Improve the flexibility of wiring: Enhances the flexibility of circuit board wiring, making the circuit design more compact and efficient.
Different types of via holes such as blind via holes, buried via holes, and through via holes, may have some slight differences in working principle, but overall, they are all to achieve the conduction and connection among various layers of printed circuit board. In practical applications. various factors are considered while choosing the appropriate type of via hole, such as the number of layers of printed circuit board, design requirements, cost, etc.
