Speaking of blind and buried via circuit boards, everyone's understanding and understanding of blind and buried via circuit boards is vague. Some manufacturers cannot know exactly what blind vias are, how to treat blind vias and what kind of blind vias it is. What is buried-hole board, the definition and difference of buried-hole board; Let’s talk about the history of PCB board: the name of circuit board appeared from the 20th century to the beginning of the 21st century, and the appearance of circuit board guides the development of electronic products. The progress of the company is advancing by leaps and bounds, and electronic assembly technology has been rapidly improved. However, due to the increase in circuit density, the packaging methods of parts are constantly updated. In order to allow the limited circuit board area to place more high-performance parts, in addition to the thinner circuit width, the diameter of the hole was also reduced from 1 mm in the DIP jack to 0.6 mm in the SMD, and further reduced. Reduce to less than 0.4mm. But it still occupies the surface area, so there will be buried and blind holes. The definition of the blind buried via circuit board is as follows:

  Buried hole

  Buried vias are through holes between inner layers. They cannot be seen after pressing, so there is no need to occupy the outer area. The upper and lower sides of the holes are located in the inner layer of the board, in other words, they are buried inside the board. In short, it's just sandwiched in the middle, you can't see these processes from the surface. Therefore, you must carefully inquire and understand the file before producing the buried-hole circuit board, otherwise it will bring a lot of trouble!

  Blind hole

  Blind buried vias are used to connect the surface layer and one or more inner layers. One side of the hole is on the side of the board and then reaches the inside of the board. Simply put, the surface of the blind hole can see one side and the other. The board of directors is intangible, just like the order in our daily lives. There is only one opening on the surface, and the water goes straight to the ground. If you want to make samples, I suggest you go to Jaguar's 24-hour fast PCB factory to try it. PCB proofing is priced online, with fast response, affordable prices, fast speed and good quality. Through the above introduction, I hope you have an understanding of blind holes. To understand.