PURPOSE: An isolator is provided to couple components within a limited space of an isolator and maintain the isolator to be small sized. CONSTITUTION: A Sr-Ferrite(120) is arranged in an inside of an upper case and a lower case and generates a static magnetic field by an input current. A garnet ferrite(140) is arranged on a lower part of the Sr-Ferrite(120) and generates an induction magnetic field. An inside terminal(130) has a strip line(130') to be connected to input and output terminals and a ground terminals along with the garnet ferrite(140). A chip resistance(160) is connected to the strip line(130') of the inside terminal. A groove is formed on a central part of an inside of an injection case and allows the garnet ferrite to be inserted therethrough. Dielectric elements(150a-150c) are disposed on both sides and one front side of the garnet ferrite(140). A chip resistance(160) is installed on one side of the dielectric element(150c) which is disposed on the front side. The strip line(130) of the inside terminal(130) is interposed on an upper side of the garnet ferrite(140).
