MOUNTING DESIGN DEVICE AND MOUNTING DESIGNING METHOD

摘要

PROBLEM TO BE SOLVED: To improve a wiring ratio and to make design efficient by following a wiring lead pattern that is preliminarily prepared and performing arrangement design that secures a wiring lead area in part arrangement of a mounting design device. SOLUTION: A storage device 2 stores the lowest pitch between vias as a 1st design protocol. A predictive expanding part 3 detects plural pins that can lead out a wiring to a via among pins which are attached to parts that should decide a mounting position and decides whether the interval between plural pins that are detected is narrower than the smallest pitch between the vias. When the pin interval is narrower than the smallest pitch, the part 3 predicts how many steps are formed in the wiring that is led out from the pins and expands the part so that a wiring area for predicted steps can be secured. A mounting design application decides the mounting position of the part to a substrate in an enlarged size.