Several technical or production-related demands require the covering / sealing of vias.
We use a vacuum plugging machine for via filling.
These types of Via covering are possible:
- IPC 4761 Typ V: Filled Via
- IPC 4761 Typ VI: Filled & Covered Via (overprinted with solder-stop)
- IPC 4761 Typ VII: Filled & Capped Via (suitable for für Via-in-Pad)
Instead of IPC 4761 Type III or IV, we recommend Type V or VI for the same applications.
In the 4-layer
the Filled & Capped Via (VII)
is most affordable option because biggest range of applications including via-in-pad.