| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a composite electronic component which is constituted by combining an electrostatic discharge (ESD)protection element and a common mode filter and can obtain a protection voltage equal to or higher than 5 kV. <P>SOLUTION: The composite electronic component 100 includes first and second magnetic substrates 11a and 11b, and a functional layer 12 sandwiched between these magnetic substrates, and the functional layer 12 is configured of a common-mode filter layer 12a and an (ESD) protection element layer 12b. An electrostatic capacitance of the ESD protection elements is equal to or lower than 0.35 pF. The common-mode filter layer 12a includes a first spiral conductor 17 formed on an insulation layer 16b, and a second spiral conductor 18 formed on an insulation layer 16c, and DC resistance of a common mode filter is 0.5-5Ω. A width W and a length L of the first and second spiral conductors 17 and 18 satisfy a relation expressed by√(L/W)<(7.6651-fc)/0.1385, wherein fc is a cutoff frequency (MHz) against differential mode noise. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
