| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic noise suppression member capable of showing suppression effects (especially, magnetic field suppression effects) for electromagnetic noise over a wide band, and that has a large surface resistance, and that is not short-circuited even when directly adhered to a circuit of an electronic component.SOLUTION: In an electromagnetic noise suppression member, on both sides of a composite sheet containing a magnetic material and a carbon material in resin, magnetic sheets containing a magnetic material in resin and having a surface resistance of 1 M&OHgr;/sq. or more are laminated so as to have a thickness that is 20-80% of a thickness of the composite sheet. Thereby, due to magnetic field suppression effects in a low-frequency band by the magnetic sheet and magnetic field suppression effects in a high frequency band by the composite sheet, electromagnetic noise suppression effects can appear over a wide band. In addition, since the surface resistance of the electromagnetic noise suppression member is large, the electromagnetic noise suppression member can be directly adhered to the circuit. |
