Printed Circuit Boards - PCBs

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PCB (printed circuit board) density refers to the amount of electrical and electronic components that can be integrated into a given area of a PCB. It is usually measured in terms of components per square inch or square centimeter. The higher the PCB density, the more components can be packed into a smaller space. This can result in smaller, lighter, and more compact electronic devices. However, higher PCB density also increases the complexity of manufacturing, testing, and troubleshooting the circuit board. The PCB density is influenced by several factors, including the size and pitch of components, the interconnect technology used, the routing method, and the board layout.

HDI (High-Density Interconnect) PCBs are a type of printed circuit board that has a higher component density compared to traditional PCBs. They are designed to accommodate the increasing demand for smaller and more complex electronic devices. HDI PCBs are made using micro-via technology, which allows for more routing layers in a smaller space and enables the use of smaller components. This results in higher component density and reduced board size, making HDI PCBs ideal for use in compact, portable electronic devices such as smartphones, tablets, and wearable devices.

HDI PCBs are made by drilling micro vias, which are small holes, through the PCB substrate to connect the various layers. This allows for more routing layers to be used, resulting in higher component density. The smaller vias also allow for smaller components to be used, further increasing the PCB density.

Overall, HDI PCBs offer several advantages over traditional PCBs, including higher component density, reduced board size, and improved electrical performance. However, HDI PCBs are also more complex to manufacture, requiring specialized equipment and processes, which can result in higher costs compared to traditional PCBs.