Protection element

A protection element, comprising:

• an insulating substrate;
• a heating body laminated on the insulating substrate;
• an insulating member laminated on the insulating substrate so as to cover at least the heating body;
• first and second electrodes laminated on the insulating substrate having the insulating member laminated thereon;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes and fusing the current path between the first and second electrodes by heating,
• wherein the fusible conductor comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• a heating body laminated on the insulating substrate;
• an insulating member laminated on the insulating substrate so as to cover at least the heating body;
• first and second electrodes laminated on the insulating substrate having the insulating member laminated thereon;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a plurality of fusible conductors laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between said first and second electrodes by heating,
• wherein each of the fusible conductors comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• a heating body built inside the insulating substrate;
• first and second electrodes laminated on the insulating substrate;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between said first and second electrodes by heating of the heating body,
• wherein the fusible conductor comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• a heating body laminated on the insulating substrate;
• first and second electrodes laminated on a surface of the insulating substrate opposite to a surface thereof on which the heating body is laminated;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between said first and second electrodes by heating of the heating body,
• wherein the fusible conductor comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• a heating body laminated on the insulating substrate;
• first and second electrodes laminated on a same surface of the insulating substrate as a surface thereof on which the heating body is laminated;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between the first and second electrodes by heating of the heating body,
• wherein the fusible conductor comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• first and second electrodes laminated on the insulating substrate;
• a heating body extraction electrode laminated on a current path between the first and second electrodes;
• a heating element incorporated so as to be electrically connected to the heating body extraction electrode;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between said first and second electrodes by heating of the heating element,
• wherein the fusible conductor comprises a layered body including at least a high melting point metal layer and a low melting point metal layer, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the high melting point metal layer, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.

A protection element, comprising:

• an insulating substrate;
• a heating body laminated on the insulating substrate;
• an insulating member laminated on the insulating substrate so as to cover at least the heating body;
• first and second electrodes laminated on the insulating substrate having the insulating member laminated thereon;
• a heating body extraction electrode electrically connected to said heating body on a current path between the first and second electrodes;
• and
• a fusible conductor laminated over a range from the heating body extraction electrode to the first and second electrodes, and fusing the current path between the first and second electrodes by heating,
• wherein the fusible conductor is made of a high melting point metal and connected with each of the first electrode, the second electrode, and the heating body extraction electrode via a low melting point metal, and
• wherein the low melting point metal layer is melted by a heat generated by the heating body, whereby, while eroding the fusible conductor made of the high melting point metal, the low melting point metal layer is drawn close to a side of the first and second electrodes and the heating body extraction electrode, and fused, said first and second electrodes and said heating body extraction electrode each having high wettability for the low melting point metal.