Novel protection device
The utility model discloses a novel protection device, which comprises a substrate, a first electrode and a second electrode are arranged on the surface of the substrate, a heating body is arranged on the substrate, an insulating layer covers the surface of the heating body, an intermediate electrod...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses a novel protection device, which comprises a substrate, a first electrode and a second electrode are arranged on the surface of the substrate, a heating body is arranged on the substrate, an insulating layer covers the surface of the heating body, an intermediate electrode is arranged above the insulating layer, a fuse link is arranged above the heating body, and the fuse link is connected with the first electrode and the second electrode. The fuse element is connected with the first electrode, the second electrode and the intermediate electrode, the substrate is also covered with an insulating cover, the fuse element comprises a first high-temperature metal material layer and a second low-temperature metal material layer, the fuse element is made of a lead-free material, and the fuse element is lapped on the electrodes through lead-free solder. The surface of the fuse element is covered with a fluxing agent for preventing oxidation. Through the above mode, the lead-free fuse has t |
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