HDI PCB
HDI PCB Fabrication
PCBBOX is offering HDI PCBs to global customers with excellent quality and cost efficiency, which are widely applied in complex projects and compact devices. HDI (High-Density Interconnect) PCBs are a type of printed circuit board that features a higher density of wiring connections compared to traditional PCBs with advantages:
1. Miniaturization: HDI PCBs enable the design of smaller and lighter electronic devices.
2. Higher Performance: The high-density interconnections improve signal integrity and reduce signal loss.
3. Increased Functionality: More components can be placed on the board, allowing for more complex and powerful devices.

Feature | Capability |
Quality Grade | Standard IPC 2 |
Number of Layers | 4 – 24layers |
Order Quantity | 1pc – 10000+pcs |
Build Time | 2days – 5weeks |
Material | FR4 standard Tg 140°C,FR4 High Tg 170°C, FR4 and Rogers combined lamination |
Board Size | Min 6*6mm | Max 457*610mm |
Board Thickness | 0.4mm – 3.0mm |
Copper Weight (Finished) | 0.5oz – 2.0oz |
Min Tracing/Spacing | 2.5mil/2.5mil |
Solder Mask Sides | As per the file |
Solder Mask Color | Green, White, Blue, Black, Red, Yellow |
Silkscreen Sides | As per the file |
Silkscreen Color | White, Black, Yellow |
Surface Finish | HASL – Hot Air Solder Leveling Lead Free HASL – RoHS ENIG – Electroless Nickle/Immersion Gold – RoHS Immersion Silver – RoHS Immersion Tin – RoHS OSP – Organic Solderability Preservatives – RoHS |
Min Annular Ring | 4mil, 3mil – laser drill |
Min Drilling Hole Diameter | 6mil, 4mil – laser drill |
Max Exponents of Blind/Buried Vias | stacked vias for 3 layers interconnected, staggered vias for 4 layers interconnected |
Other Techniques | Flex-rigid combination Via In Pad Buried Capacitor (only for Prototype PCB total area ≤1m²) |
Printed circuit board technology has been evolving to meet the demands of smaller and faster products.HDI boards are more compact and feature smaller vias, pads, copper traces, and spaces. As a result, HDI allows for denser routing, making the PCB lighter, more compact, and with fewer layers. Runrays are right here to serve you with outstanding HDI PCB manufacturing servcies.