Via plug is a PCB manufacturing technology in which the via is filled with solder mask or other non-conductive/conductive material. In this process, the via holes are closed partially or completely to improve reliability of the printed circuit boards during usage or soldering quality. Via plug is more and more commonly used in high standard PCBs, especially the ones with BGA assembly.
Viasion offers a variety of via plug requirement in our PCB production, such as vias tented by solder mask, vias plugged/filled by solder mask, vias plugged by conductive and non-conductive material, vias plated shut by copper (via-in-pad) etc.
Our experienced engineering team will be helpful to advise the best via plug options which are suitable to your products. To make sure your products to have best quality and most competitive pricing.
What is via in PCB
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What are the normal types of via plug
Via tenting by LPI Solder Mask
Via plugging by Solder Mask
Non-conductive via plug
Conductive via plug
Via plated shut by copper
Introduction for IPC 4761-Guide for PCB via protection types
|IPC-4761 Type||Description||IPC-4761 Illustration||Material used||Reliability||Cost||Available|
|Type I-A||Tented Vias- Single-Sided||Dry Film||low||low||NO|
|Type I-B||Tented Vias- Double-Sided||Dry Film||low||low||NO|
|Type II-A||Tented And Covered via –Single-Sided||Dry Film/LPI Solder Mask||medium||low||YES|
|Type II-B||Tented And Covered via –Double-Sided||Dry Film/LPI Solder Mask||medium||low||YES|
|Type III-A||Plugged via– Single Sided||LPI Solder Mask Or Resin||medium||low||YES|
|Type III-B||Plugged via- Double Sided||LPI Solder Mask Or Resin||medium||low||YES|
|Type IV-A||Plugged And Covered via- Single-Sided||LPI Solder Mask Or Epoxy||medium||low||YES|
|Type IV-B||Plugged And Covered via- Double-Sided||LPI Solder Mask Or Epoxy||medium||low||YES|
|Type V||Filled via(Fully Plugged)||Conductive Or Non-Conductive Material||High||medium||YES|
|Type VI-A||Filled And Covered via– Single-Sided||Conductive Or Non-Conductive Material + LPI Solder Mask||High||medium||YES|
|Type VI-B||Filled And Covered via –Double-Sided||Conductive Or Non-Conductive Material + LPI Solder Mask||High||medium||YES|
|Type VII||Filled And Capped by copper||Conductive Or Non-Conductive Material+Copper plating||High||High||YES|
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