Patent ID: 8698287
Filing Date: 2014-04-15
Classification: H01L

Abstract:
1. A semiconductor device in which a control circuit board is mountable outside a sheath case, a power semiconductor element being placeable inside the sheath case, the device comprising: a metal step support including a base portion implanted in the sheath case, a connection portion which extends from an end of the base portion, and a step portion formed at a boundary between the base portion and the connection portion; a shield plate disposed over the step portion such that the connection portion of the step support pierces the shield plate; and a metal ring disposed around the connection portion and over the shield plate, an end of the metal ring being spaced apart from an end of the connection portion, wherein the semiconductor device is adapted such that the control circuit board is mounted over said end of the metal ring and is fixed onto the connection portion by an engagement member, and wherein said end of the metal ring is an upper end of the metal ring and said end of the connection portion is an upper end of the connection portion, and the upper end of the metal ring is disposed at a level higher than a level at which the upper end of the connection portion is disposed.