Metal foil resistor

A metal foil resistor having a metal foil resistive element constituted of a metal foil in which a resistance circuit pattern is formed, the metal form resistor comprising:

• a package which contains the metal foil resistive element in electrically insulated state so that the resistive element can be expandable and contractible in a spreading direction of the metal foil;
• a relay terminal which is held in the package in an electrically insulated state and is connected to an electrode of the metal foil resistive element;
• and
• a resistor accommodating space formed in the package, the resistor accommodating space containing the metal foil resistive element;
• wherein an air gap is disposed between the metal resistive element and a side of the package in a direction perpendicular to a plane that is parallel to the metal foil resistive element.

A metal foil resistor having a metal foil resistive element constituted of a meal foil in which a resistance circuit pattern is formed, the metal foil resistor comprising:

• a package which contains the metal foil resistive element in electrically insulated state so that the resistive element can be expandable and contractible in a spreading direction of the metal foil;
• a relay terminal which is held in the package in an electrically insulated state and is connected to an electrode of the metal foil resistive element;
• and
• a resistor accommodating space formed in the package, the resistor accommodating space containing the metal foil resistive element,
• wherein a thermally conductive liquid is disposed between the metal resistive element and a side of the package in a direction perpendicular to a plane that is parallel to the metal foil resistive element.