Abstract: An inductor includes a base device having a parallelepiped chamber formed by two side surfaces and two end surfaces, a parallelepiped conductive device engaged into the parallelepiped chamber of the base device and having a parallelepiped compartment and having two terminals engaged onto an upper surface of the base device, and a core engaged into the parallelepiped compartment of the conductive device. The conductive device is planar and includes a rectangular cross section having a reduced dimension or structure for allowing the inductor to be easily and quickly and attached onto the surfaces of the electric circuit boards with surface mount devices.