An inductor and capacitor implemented with build-up vias. The inductor and capacitor comprise a conductor plane, a dielectric layer, an inductor/capacitor inducing build-up via and a conductor layer. There is a conducting material in the inductor/capacitor inducing build-up via and a fist end thereof is in contact with the conductor plane. The length of the inductor inducing build-up via is larger than one fourth of a signal wavelength while the length of the conductor inducing build-up via is smaller than one fourth of a signal wavelength.