Surface mount fuse and fuse element thereof
AssigneeConquer Electronics Co., Ltd.
InventorsHung-Chih Chiu, Po-Shuo Chiu
Life of this patent
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Abstract
A surface mount fuse and fuse element thereof are disclosed. The fuse element has a lead-free flat fuse, a flux layer, and a porous metal layer. The porous metal layer is bonded on one surface of the lead-free flat fuse through the flux layer. A part of the flux layer penetrates into the porous metal layer through capillary action, so the flux fills the pores of the first porous metal layer to distribute on the lead-free flat fuse evenly. When overcurrent occurs in the current loop and high temperature occurs, the flux layer helps the porous metal layer and the lead-free flat fuse to melt effectively, thereby interrupting the current loop in time.
Claims20
A fuse element of a surface mount fuse comprising:
- a lead-free flat fuse having a first surface and a second surface opposite to the first surface;
- primary flux layer formed on the first surface of the lead-free flat fuse;
- and
- a first porous metal layer stacked on the primary flux layer, wherein a periphery of the first porous metal layer does not extend beyond that of the lead-free flat fuse, wherein a part of the primary flux layer penetrates into a plurality of pores of the first porous metal layer, and the first porous metal layer is bonded to the first surface of the lead-free flat fuse through the primary flux layer.
Dependencies are inferred from the claim text.