What must be the value of W, L and SMO for SMT Pad in ADS. I want to use 0805 SMD resistor package series which usually have L=1000um and w= 500um and S(for soldering or bonding)=200um.
I suggest to use a pad with the same dimensions of those you usually use in the circuits. You can models this pad with a line and an open circuit or a gap.