aaron_do
|
Hi all,
I have checked two different vias. One is going from Cu to Cu, and the other is going from Cu to Al (top layer). The one going from Cu to Cu has about 7 times higher resistivity than the Cu metal layer, while the one going from Cu to Al has about 18 times higher resistivity than the Al metal layer! Unless the cone really goes to a single point, I can't see how a conical shape can explain such huge increase in resistivity. Any ideas?
thanks, Aaron
|