Abstract: Disclosed is a protective element, comprising an insulator, a fusible element, and electrodes, wherein the insulator covers a meltable part of the fusible element. The electrodes are disposed at two ends of the insulator. Two ends of the fusible element are electrically connected to the electrodes. Wave absorbing structures are disposed around the fusible element in the insulator, a plurality of protrusions is provided on the wave absorbing structures, and the protrusions face the fusible element. Distances exist between the wave absorbing structures and the fusible element.

Abstract: Disclosed is a protective element, comprising an insulator, a melt and electrodes, wherein the insulator covers a meltable part of the melt. The electrodes are disposed at two ends of the insulator. Two ends of the melt are electrically connected to the electrodes. Wave absorbing structures are disposed around the melt in the insulator, a plurality of protrusions is provided on the wave absorbing structures, and the protrusions face the melt. Distances exist between the wave absorbing structures and the melt. The present invention improves the shape of a melt and designs wave absorbing structures which can resist an impact, energy waveforms can be destroyed, impact energy is dispersed to the periphery so as to achieve the aim of wave (energy) absorbing, a breaking performance of a protective element can be at least doubled by virtue of the design of the wave absorbing structure, a manufacturing process is simple, and the protective element is suitable for batch production.

Abstract: A multi-layer fuse and its manufacturing method are provided. The multi-layer fuse comprises a ceramic substrate, back electrodes, front electrodes, fuse wire, protective layers and metal ends, wherein the fuse wire is prepared in multiple layers and the adjacent layers of fuse wire are connected in a head-to-tail style; the two lead-outs of the fuse wire as a whole are respectively connected to the two front electrodes located at the two ends of the substrate, and each layer of the fuse wire is deposited with a protective layer. During manufacturing, all protective layers but the upmost one leaves the tail of each layer of fuse wire uncovered so that the head-to-tail series connection is possible.

Abstract: The invention relates to the field of fuses, and particularly a multi-layer blade fuse and its manufacturing method. The said multi-layer blade fuse comprises a ceramic substrate, back electrodes, front electrodes, fuse wire, protective layers and metal ends, wherein the fuse wire is prepared in multiple layers and the adjacent layers of fuse wire are connected in a head-to-tail style; the two lead-outs of the fuse wire as a whole are respectively connected to the two front electrodes located at the two ends of the substrate, and each layer of the fuse wire is deposited with a protective layer. During manufacturing, all protective layers but the upmost one leave the tail of each layer of fuse wire uncovered so that the head-to-tail series connection is possible. Compared with the prior methods, the method disclosed herein is characteristic of simpler manufacturing processes, less investment on equipments and much shorter manufacturing duration, which consequently reduce the cost.

Abstract: The invention relates to the field of fuses, and particularly to a blade fuse used to protect electronic components and its manufacturing method.