in general principle is same, V=L*di/dt=N*d(BS)/dt, all depend on your requirement, e.g. current and lnductance and dimension and DCR and dimension,first we suggest to use standard part, if not, the part must be customized, for difference inductor, has difference design, e.g. for common mode choke, we select high permeability core, UU or EE or ET or toroidal, SMD or pin through configuration, according to inductance and AL of core, get turns, get diameter of wire according to current.