PURPOSE: To improve the effect of the prevention of electromagnetic disturbance, by forming a filter by inserting a ferrite core into the lead terminal of a through capacitor.
CONSTITUTION: Through two through capacitors 20A and 20B, common lead terminal 22 runs. At the channel-shaped lead terminal part side of through capacitor 20A, inserted ferrite core (bead) 21 is provided. Further, earthing external terminal 23 is soldered onto the external electrode of through capacitors 20A and 20B and led out. Reactance component L1 is made of ferrite bead 21, and capacitors C1 and C2 are formed by through capacitors 20A and 20B. A reactance component accompanying earth lead terminal 23 is shown by L2. Filters (F1∼F5) are packaged on one substrate 24.
TOKUDA HIROATSU
OKADA TOMOYUKI
