Solid state relay
AssigneeSharp Kabushiki Kaisha
InventorHiroshi Yamaguchi
Life of this patent
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Abstract
A solid state relay is formed by mounting a light-emitting element on a light-emitting side lead frame, mounting a light-receiving element or a switching element which operates in response to the light-receiving element and signals from the light-receiving element on a light-receiving side lead frame, arranging these lead frames on the light-emitting side and the light-receiving side to opposite each other, and sealing into one package and is formed by mounting protective element that protects the light-emitting element or the light-receiving element on at least one of the lead frames and arranging the protective element or the protective element and the switching element inside a primary mold resin that seals the light-emitting element and the light-receiving element.
Claims6
A method for forming a solid state relay, comprising:
- mounting a light-emitting element on a light-emitting side lead frame;
- mounting a light-receiving element or a light-receiving element and a switching element which operates in response to signals from the light-receiving element on a light-receiving side lead frame;
- arranging the light-emitting side and the light-receiving side lead frames in opposition to each other;
- and
- sealing the lead frames into one package,
- wherein protective elements that protect the light-emitting element or the light-receiving element is mounted on at least one of the lead frames,
- wherein the protective elements, or the protective elements and the switching element, are arranged inside a primary mold resin that seals the light-emitting element and the light-receiving element,
- wherein a floating island portion and a peripheral portion surrounding the floating island portion are provided in at least one of the lead frames,
- wherein a plurality of mounting portions with different gaps between the floating island portion and the peripheral portion opposing each other are provided at the floating island portion and the peripheral portion that opposes the floating island portion, and
- wherein the protective elements are mounted to bridge these mounting portions.
Dependencies are inferred from the claim text.