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HDI stands for High Density Interconnect, and it refers to a type of printed circuit board (PCB) technology that allows for higher component density and increased functionality in a smaller form factor.
Microvia HDI PCBs: These are the most common type of HDI PCBs. They use microvias, which are small drilled holes that connect different layers of the PCB. Microvias enable the routing of signals between layers, allowing for a higher density of components.
Stacked Microvia HDI PCBs: These PCBs have multiple layers of microvias stacked on top of each other. This allows for even higher component density and more complex interconnections. Stacked microvias are often used in advanced applications like smartphones and tablets.
Sequential Build-Up HDI PCBs: Sequential build-up HDI PCBs are built layer by layer, adding conductive and insulating layers sequentially. This process allows for more complex and intricate designs, as well as finer trace widths and spacing. Sequential build-up HDI PCBs are commonly used in high-end electronics.
Any Layer HDI PCBs: As the name suggests, any layer HDI PCBs allow for the placement of vias on any layer of the PCB. This provides maximum flexibility in routing and interconnection. Any layer HDI PCBs are often used in applications where space is at a premium, such as aerospace and medical devices.
Flex and Rigid-Flex HDI PCBs: These HDI PCBs combine flexible and rigid sections, allowing for increased flexibility and space-saving designs. Flex and rigid-flex HDI PCBs are commonly used in applications that require bending or folding, such as wearable devices or automotive electronics.
It's important to note that the availability and suitability of different types of HDI PCBs may vary depending on the specific requirements of your project. It's always recommended to consult with a PCB manufacturer or design engineer to determine the best type of HDI PCB for your application.
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