NOISE FILTER

摘要

In a noise filter (1A), an input side of a signal-line lead (11) is inserted in a cylindrical ferrite bead (2), and an output side of the signal-line lead (11) is inserted in a cylindrical ferrite bead (3). An input side of a ground lead (12) is inserted in a cylindrical ferrite bead (4). The signal-line lead (11) is inserted in a feedthrough capacitor (5) such that the feedthrough capacitor (5) is adjacent to an output side of the cylindrical ferrite bead (3). A multilayer capacitor (6) is electrically coupled between the signal-line lead (11) and the ground lead (12) such that the multilayer capacitor (6) is adjacent to an output side of the cylindrical ferrite bead (2) and adjacent to an output side of the cylindrical ferrite bead (4). Each of an end (11a) of the signal-line lead (11) and an end (12a) of the ground lead (12) is flat shaped, bent along an outer surface of a base member (21), and formed as a surface-mount external terminal.