Protective element

Details Protective element Protective element

2007-10-23

2007-10-23

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

C337S296000, C337S159000, C337S416000

Reexamination Certificate

active

10537908

ABSTRACT:
A protective element with improved spherical segmentation performance during the melting of a low-melting metal member, has a heat-generating member and a low-melting metal member on a substrate, in which the low-melting metal member is heated and blown out by the heat generated by the heat-generating member. There is a region in which the low-melting metal member is suspended over the underlying base (such as an insulating layer), and when S (μm2) is the surface area of a lateral cross section of the low-melting metal member4between a pair of low-melting metal member electrodes3aand3bor3band3csandwiching the region, and H (μm) is the height at which the suspended region is suspended, then the relationship H/S≧5×10−5is satisfied. It is preferable here that the upper surfaces of both of the pair of low-melting metal member electrodes protrude beyond the upper surface of the underlying insulating layer.

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