| 摘要 |
PROBLEM TO BE SOLVED: To always operate normally an electronic component, such as a semiconductor element by converting generated noise with magnetic powder contained in a magnetic layer into thermal energy and absorbing it immediately before the noise enters into an electronic component such as a mounted semiconductor element mounted, thereby avoiding the entering of noise into an electronic component such as semiconductor element. SOLUTION: This wiring board is conductive to a wired conductor layer 3 on an organic resin insulating layer 2 and is covered and formed with a bonding pad 10 conductive to the wired conductor layer 3, to which electrodes of an electronic component are connected. Then a magnetic layer 11 containing magnetic powder in an organic resin is formed on an outer peripheral end of a bonding pad 10 and/or in the vicinities of the bonding pad 10. |
