high density interconnect PCB for mobile and IoT devices

HDI boards, or High-Density Interconnect boards, are printed circuit boards that achieve high routing density through micro-line widths, micro-line spacing, and micro-via technology. HDI boards are a common high-end PCB type used in modern electronic products such as smartphones, tablets, and high-end servers.

Key Features of HDI Boards

1. High routing density: Line widths and spacings typically below 100μm (4 mil), enabling tighter routing and smaller component spacing.
2. Microvia technology: Extensive use of micro blind vias and buried vias formed by laser drilling to enhance interlayer interconnect efficiency.
3. Multilayer structure: Typically multilayer boards (4-layer, 6-layer, 8-layer, or higher) supporting complex circuit designs.
4. Thin and compact design: Enables the development of lighter, thinner, shorter, and smaller electronic products.

Advantages of HDI Boards

1. Supports high-density, high-performance chip packaging such as BGA, CSP, and QFP.
2. Significantly improves signal integrity and reliability while reducing signal delay and crosstalk.
3. Facilitates smaller product dimensions and reduced weight.
4. Ideal for electronic products requiring high speed, high frequency, and stringent signal integrity.

Application Fields of HDI Boards

1. Smartphones, tablets, wearable devices.
2. Laptops, high-end motherboards.
3. Automotive electronics, medical equipment.
4. Communication base stations, servers, and other high-end electronic devices.