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Hideo Yabashi ( Ibi-gun, JP )
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Hideo Yabashi ( Ibi-gun, JP )
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Chip capacitors 20 are provided in a printed circuit board 10. In this manner, the distance between an IC chip 90 and each chip capacitor 20 is shortened, and the loop inductance is reduced. In addition, the chip capacitors 20 are accommodated in a core substrate 30 having a large thickness. Therefore, the thickness of the printed circuit board does not become large.
Chip capacitors 20 are provided in a printed circuit board 10. In this manner, the distance between an IC chip 90 and each chip capacitor 20 is shortened, and the loop inductance is reduced. In addition, the chip capacitors 20 are accommodated in a core substrate 30 having a large thickness. Therefore, the thickness of the printed circuit board does not become large.
A chip capacitor 20 is provided in a core substrate 30 of a printed circuit board 10. This makesit possible to shorten a distance between an IC chip 90 and the chip capacitor 20 and to reduce loop inductance. Since the core substrate 30 is constituted by providing a first resin substrate 30a, a second resin substrate 30b and a third resin substrate 30c in a multilayer manner, the core substrate 30 can obtain sufficient strength.
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