Patent ID: 6418032
Filing Date: 2002-07-09
Classification: H05K

Abstract:
A printed wiring board for supplying electric power from an external power source to a semiconductor device, wherein the semiconductor device has a plurality of input power supply terminals for inputting substantially equal voltages to the semiconductor device, the printed wiring board comprising:(a) a plurality of layers, the layers including: (i) a mounting face having a plurality of electrical terminals, the mounting face being adapted for mounting the semiconductor device thereto with the plurality of semiconductor device power supply terminals electrically connected to the mounting face electrical terminals; and (ii) another layer having a first power source region adapted for connection to the external power source; and (b) a second power source region having an outer configuration smaller than an outer configuration of the semiconductor device, electrically insulated from the first power source region except through an electrical connection through a filter, and electrically connected to the mounting face electrical terminals for supplying electrical power received from the first power source region through the filter, to the semiconductor device.