China Wholesale Rigid Flex Circuit Boards Quotes - 8 Layer ENIG Impedance Control PCB 16978 – Huihe
China Wholesale Rigid Flex Circuit Boards Quotes - 8 Layer ENIG Impedance Control PCB 16978 – Huihe Detail:
Deficiencies of the blind buried vias
The main problem of blind buried via is the high cost. In contrast, buried holes cost less than blind holes, but the use of both types of holes can significantly increase the cost of a board. The cost increase is due to the more complex manufacturing process of the blind buried hole, that is, the increase in manufacturing processes also leads to the increase in testing and inspection processes.
Buried Via
Buried vias are used to connect different inner layers, but have no connection with the outermost layer.
A separate drill file must be generated for each level of buried hole. The ratio of hole depth to aperture (aspect ratio/thickness-diameter ratio) must be less than or equal to 12.
The keyhole determines the depth of the keyhole, the maximum distance between different inner layers.
In general, the larger the inner hole ring, the more stable and reliable the connection.
Blind buried vias
The main problem of blind buried via is the high cost. In contrast, buried holes cost less than blind holes, but the use of both types of holes can significantly increase the cost of a board. The cost increase is due to the more complex manufacturing process of the blind buried hole, that is, the increase in manufacturing processes also leads to the increase in testing and inspection processes.
A: buried vias
B: Laminated buried via (not recommended)
C: Cross buried via
Equipment display
Automatic Plating Line
PTH line
LDI
CCD Exposure Machine
The advantage of blind Vias and buried Vias for engineers is the increase of component density without increasing layer number and size of circuit board. For electronic products with narrow space and small design tolerance, blind hole design is a good choice. The use of such holes helps the circuit design engineer to design a reasonable hole/pad ratio to avoid excessive ratios.
Application
Communications
Security electronics
Railtransit
Product detail pictures:
Related Product Guide:
We emphasize progress and introduce new solutions into the market each year for China Wholesale Rigid Flex Circuit Boards Quotes - 8 Layer ENIG Impedance Control PCB 16978 – Huihe , The product will supply to all over the world, such as: Karachi, Albania, Cape Town, Now, with the development of internet, and the trend of internationalization, we have decided to extend business to overseas market. With the propose of bringing more profits to oversea customers by providing directly abroad. So we have changed our mind, from home to abroad, hope to give our customers more profit, and looking forward to more chance to make business.
By Frank from Russia - 2018.11.22 12:28
Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
By Frances from Liberia - 2018.06.19 10:42