PCB vias are the electrical connections between layers. Vias are handled in the following ways:
PCB vias be covered:
Standard: Over-line holes must be covered, normal screen-printed solder resisted, no special plug-hole treatment;
Plug, part of the hole is not plugged, must accept the mouth of the yellow, but does not receive the
When designing a PCB, how to choose the via size? There are two voices.One voice said: choose 10-12mil via,Large vias are not helpful for heat dissipation and flow design, and the parasitic inductance of small holes is very small, which can effectively reduce the impedance of the power path. Another
Most of PCB manufacturers use Al sheet to plug vias.We use blank net to make solder mask and plug vias after many experiences, it's stability and reliability.
As the development of electronics industry, customers put high requirements for PCB surface mounted technology.Via plugging come into being as it connected all circuits,then
