Patent ID: 7217979

Claim:
A semiconductor apparatus, comprising: an input protection circuit coupled to a wiring provided between an external terminal and an internal circuit, the input protection circuit including a protection element for protecting the internal circuit from an excessive electrostatic surge input supplied to the external terminal; a contact coupled to the input protection circuit; a first metal wiring layer electrically connected to the contact at a first location, and a length of a portion of the first metal wiring layer extending from the first location to a second location in a direction away from the contact; and a radiator coupled along the length of the portion of the first metal wiring layer, such that the radiator radiates heat along the length of the portion of the first metal wiring layer when an electrostatic discharge current flows through the first metal wiring layer, the radiator including: a plurality of second metal wiring layers; a plurality of interlayer insulating films, adjacent ones of the plurality of second metal wiring layers being separated from one another by a corresponding one of the plurality of interlayer insulating films; a first plurality of via-metals being provided in a first one of the plurality of interlayer insulating films, each of the first plurality of via-metals having a first width in a direction parallel to the first metal wiring layer; and a second plurality of via-metals provided in a second one of the plurality of interlayer insulating films, each of the second plurality of via-metals having a second width in the direction parallel to the first metal wiring layer, the second width being different than the first width.