Hdi boards high density interconnect topscom is a professional printed circuit boards manufacturer, include: pcb circuit boards manufacturing, multilayer rigid pcb, high frequency pcb, aluminum pcb, led pcb, thick copper pcb, high-tg pcb, halogen-free pcb, hdi pcb, flexible pcb, rigid-flexible pcb, pcb assembly, oem manufacturing, electronic contract manufacturing.hdi boards, one of the fastest growing technologies in pcbs, are now available at topscom. Hdi boards contain blind andor buried vias and often contain microvias of .006 or less in diameter. They have a higher circuitry density than traditional circuit boards.there are 6 different types of hdi boards, through vias from surface to surface, with buried vias and through vias, two or more hdi layer with through vias, passive substrate with no electrical connection, coreless construction using layer pairs and alternate constructions of coreless constructions using layer pairs.hdi high density interconnect pcbprinted circuit board using hdi technologyconsumer driven technologythe via-in-pad process supports more technology on fewer layers, proving that bigger is not always better. Since the late 1980's we have seen video cameras using cartridges the size of a novel, shrink to fit in the palm of your hand. Mobile computing and working from home pushed technology further to make computers faster and lighter, allowing the consumer to work remotely from anywhere.hdi technology is the leading reason for these transformations.