I was looking through the IPC 2220 Series of specifications, and noticed a reference to IPC-2226 "High Density Interconnect Structure Design". IPC does not list this specification as being available for purchase on their website - does anyone know the status of this specification? Is it possible to obtain a preliminary copy? Also, does anyone have any links to HDI / Microvia design information? Thanks, Dave Schaefer Voice: (204)478-8059 Senior PCB Designer FAX: (204)942-3001 Symbol Technologies Email: [log in to unmask] 1000 Waverley Street Winnipeg, MB R3T 0P3