Several technical or production-related demands require the covering / sealing of vias. These types of Via covering are possible:
- Via Tenting (simple covering)
- Via Plugging (partially filled)
- Via Filling (completely filled)
In the following, you will find a comparsion of the technical capabilities.
The reference is the IPC 4761, which can be purchased here: https://portal.ipc.org/Association/Index.htm.