Country: United Kingdom; City: London;
Blind and Buried via PCB Poland, UK, Europe, Italy, Germany, Sweden, Netherlands, Spain, and Czech - A blind via connects exactly one outer layer with one or more inner layers. Blind vias are used to connect one outer layer with at least one inner layer. The holes for each connection level must be defined as a separate drill file. The ratio of whole depth to drill diameter (aspect ratio) must be ≤
A buried via is avia between at least two inner layers, which is not visible from the outer..