Component, substrate module, apparatus, and optical filter

A substrate module, comprising:

• a component;
• a substrate including a bonding layer;
• and
• a metal bonding material that connects the component to the bonding layer of the substrate,
• the component including
• a main body including a bottom surface,
• a first layer on the bottom surface of the main body, wherein
• the first layer includes a bottom surface and an exposed bottom surface area, and
• the exposed bottom surface area has a first width, and
• a single second layer that is bonded to a metal bonding material, wherein
• the metal bonding material is between the single second layer and a substrate,
• wettability with respect to the metal bonding material in a molten state is higher for the single second layer than the first layer,
• the single second layer protrudes from the bottom surface of the first layer,
• at least a part of the bottom surface of the first layer is in contact with an entire outer peripheral side of the single second layer, and
• in a cross-sectional view of the component along a lamination direction of the first layer and the single second layer:
• the first width of the exposed bottom surface area of the first layer is larger than a protrusion height of the single second layer from the first layer in a protrusion direction.

An apparatus, comprising:

• a component;
• a substrate including a bonding layer;
• and
• a metal bonding material that connects the component to the bonding layer of the substrate,
• the component including
• a main body including a bottom surface,
• a first layer on the bottom surface of the main body wherein
• the first layer includes a bottom surface and an exposed bottom surface area, and
• the exposed bottom surface area has a first width, and
• a single second layer bonded to a metal bonding material, wherein
• the metal bonding material is between the single second layer and a substrate,
• wettability with respect to the metal bonding material in a molten state is higher for the single second layer than the first layer,
• the single second layer protrudes from the bottom surface of the first layer,
• at least a part of the bottom surface of the first layer is in contact with an entire outer peripheral side of the single second layer, and
• in a cross-sectional view of the component along a lamination direction of the first layer and the single second layer:
• the first width of the exposed bottom surface area of the first layer is larger than a protrusion height of the single second layer from the first layer in a protrusion direction.

An optical filter, comprising:

• a component;
• a substrate including a bonding layer;
• and
• a metal bonding material that connects the component to the bonding layer of the substrate,
• the component including
• a main body including a bottom surface,
• a first layer on the bottom surface of the main body, wherein
• the first layer includes a bottom surface and an exposed bottom surface area, and
• the exposed bottom surface area has a first width, and
• a single second layer bonded to a metal bonding material, wherein
• the metal bonding material is between the single second layer and a substrate,
• wettability with respect to the metal bonding material in a molten state is higher for the single second layer than the first layer,
• the single second layer protrudes from the bottom surface of the first layer,
• at least a part of the bottom surface of the first layer is in contact with an entire outer peripheral side of the single second layer, and
• in a cross-sectional view of the component along a lamination direction of the first layer and the single second layer:
• the first width of the exposed bottom surface area of the first layer is larger than a protrusion height of the single second layer from the first layer in a protrusion direction.