Protective device
First Claim
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1. A protective device, comprising:
- a substrate;
a conductive section supported by the substrate, wherein the conductive section comprises a metal element electrically connected between a first electrode and a second electrode, wherein the metal element serves as a sacrificial structure having a melting point lower than that of the first electrode and the second electrode; and
a bridge element located on the metal element and facilitating breaking of the metal element upon a melting of the metal element by absorbing the melted metal element and making the melted metal element flow away from the first electrode or the second electrode, wherein a dimension of the bridge element in a first direction is longer than a dimension of the metal element in the first direction, the dimension of the bridge element in a second direction is shorter than the dimension of the metal element in the second direction, and the second direction is perpendicular to the first direction, the first direction being defined as a direction along a longitudinal axis of the bridge element, the second direction being defined as a direction extending from the first electrode to the second electrode.
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Abstract
A protective device including a substrate, a conductive section and a bridge element is provided. The conductive section is supported by the substrate, wherein the conductive section comprises a metal element electrically connected between first and second electrodes. The metal element serves as a sacrificial structure having a melting point lower than that of the first and second electrodes. The bridge element spans across the metal element in a direction across direction of current flow in the metal element, wherein the bridge element facilitates breaking of the metal element upon melting.
48 Citations
17 Claims
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1. A protective device, comprising:
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a substrate; a conductive section supported by the substrate, wherein the conductive section comprises a metal element electrically connected between a first electrode and a second electrode, wherein the metal element serves as a sacrificial structure having a melting point lower than that of the first electrode and the second electrode; and a bridge element located on the metal element and facilitating breaking of the metal element upon a melting of the metal element by absorbing the melted metal element and making the melted metal element flow away from the first electrode or the second electrode, wherein a dimension of the bridge element in a first direction is longer than a dimension of the metal element in the first direction, the dimension of the bridge element in a second direction is shorter than the dimension of the metal element in the second direction, and the second direction is perpendicular to the first direction, the first direction being defined as a direction along a longitudinal axis of the bridge element, the second direction being defined as a direction extending from the first electrode to the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification