6 Replies Latest reply on Feb 16, 2018 8:55 AM by k.r.kabaleeswaran

    copper not flood in between two vias?? How to maintain copper width 3.6mil in b/w vias ?

    k.r.kabaleeswaran

      Dear Team,

                i am working in BGA Component,BGA pitch is 0.65mm.BGA fantout is Via in Pad.in my design, i need to maintain copper widht is 3.6mil for plane layer under the BGA area.here i post the image file. Drill to drill need to maintain 7mil;  trace to via clearance is 4mil;if 3.6mil running in between  i can able to meet below image rules.but i need to assign the these rules for copper.if i flood the copper in under BGA area for below image rules copper is  not flood between 2 holes or 2 vias.

       

      contraint rules attached below

       

      if i set the above rules copper to copper disconnected happened in between 2 holes or 2 vias.

      The following queries are aries below.

      1.why copper disconnected happen in inner layer.

      2.is PADS software is not allowed below 5 mil copper widht ??

       

      kindly update any one.it is very critical. Need to solve it ??