Abstract: An electronic component mounting structure includes a terminal of an electronic component package and a chip heat radiating member. The terminal is soldered on a land of an electronic substrate and the chip heat radiating member is soldered on a back surface of the electronic component package. The chip heat radiating member is covered by a packaging resin. A metallic heat radiating pattern integrally includes a pattern extension part that protrudes from the electronic component package, such that at least a part of the metallic heat radiating pattern is formed so as to be larger than the electronic component package. The pattern extension part is configured to guide excessive solder to an outside of the electronic component package.

Abstract: Air in a thermally insulated space, which has been expanded by heat resulting from heating treatment for curing a thermosetting potting material, is prevented from entering the potting material. A casing has a partition wall that partitions an opening into a heat-generating-electronic-component placement section, where a heat generating electronic component is placed, and an adjacent section that is adjacent to the heat-generating-electronic-component placement section, when a heat releasing member is fixed to the opening. The heat-generating-electronic-component placement section is filled with a thermosetting potting material for moisture prevention up to a height which allows at least the heat generating electronic component to be buried in the potting material. The adjacent section has in the casing a communicating portion that communicates with a position which is apart from the heat-generating-electronic-component placement section filled with the potting material.

Abstract: Air in a thermally insulated space, which has been expanded by heat resulting from heating treatment for curing a thermosetting potting material, is prevented from entering the potting material. A casing has a partition wall that partitions an opening into a heat-generating-electronic-component placement section, where a heat generating electronic component is placed, and an adjacent section that is adjacent to the heat-generating-electronic-component placement section, when a heat releasing member is fixed to the opening. The heat-generating-electronic-component placement section is filled with a thermosetting potting material for moisture prevention up to a height which allows at least the heat generating electronic component to be buried in the potting material. The adjacent section has in the casing a communicating portion that communicates with a position which is apart from the heat-generating-electronic-component placement section filled with the potting material.

Abstract: An electronic component mounting structure includes a terminal of an electronic component package and a chip heat radiating member. The terminal is soldered on a land of an electronic substrate and the chip heat radiating member is soldered on a back surface of the package. The chip heat radiating member is covered by a packaging resin. The metallic heat radiating pattern integrally includes a pattern extension part that is protruded from the package, such that at least a part of the metallic heat radiating pattern in formed to be larger than the package. The pattern extension part guides excessive solder to outside of the package.