The invention relates to a fuse element (12_1; 12_2), comprising two connecting contacts (24_1, 24_1; 24_2, 24_2) and an interposed conductive track (26_1; 26_2), wherein the conductive track (26_1; 26_2) has a reduced line-cross-section in relation to the connecting contacts (24_1, 24_1; 24_2, 24_2) at least in some sections, further comprising at least one overlay (16_1; 16_2, 16_2), wherein the fuse element (12_1; 12_2) and the overlay (16_1; 16_2, 16_2) each comprise materials which undergo diffusion when a predetermined ambient temperature is exceeded and when an electric current is conducted by the fuse element (12_1; 12_2). The invention further relates to a fuse (IO) having such a fuse element (12_1; 12_2) and a base support (14), wherein the fuse element (12_1; 12_2) is disposed on a surface of the base support (14).

A fuse terminal includes a central body portion. A first arm extends from the central body portion and defines an arm space that is located on a fuse side of the central body portion. A connector portion also extends from the central body portion and includes a leg that extends on the fuse side of the central body portion.

A fuse includes a circuit layer, a thermal resistance layer, a base layer and a top layer. The circuit layer includes a fuse wire and two inner electrodes. The inner electrodes are separately connected to two ends of the fuse wire. The thermal resistance layer is superposed to the circuit layer and has a thermal resistance room and two first conductors. The first conductors are disposed in the thermal resistance layer. Each first conductor is connected to one of the inner electrodes. The base layer is closely superposed to the thermal resistance layer and has two outer electrodes on the base layer, two second conductors in the base layer and a degassing passage in the base layer correspondingly to the thermal resistance room. The second conductor is connected to the outer electrode and the first connector. The top layer is closely superposed to the circuit layer.

Provided is a fuse device capable of maintaining the insulation performance while using a fuse element having a considerable size to improve rating. The fuse device includes a fuse element 2 and a case 3 for housing the fuse element 2, and the case 3 has a resin portion 4 having a surface to be melted by heat accompanying blowout of the fuse element 2 on at least a part of an inner wall surface 8a facing the inside 8 housing the fuse element 2.

Current-limiting fuse comprising an electrically insulating housing with walls surrounding an interior space, with a first opening and with a second opening opposite to said first opening, and an integrally formed electrical conductor element extending from a first terminal area outside said housing, across said first opening, across said interior space, across said second opening and to a second terminal area outside said housing, wherein said conductor element comprises a melting section of reduced cross-section, said melting section being located in said interior space and being configured to melt, when a predefined maximum allowable electrical current in the conductor element is exceeded, and wherein a first sealing section of the conductor element seals said first opening and wherein a second sealing section of the conductor element seals said second opening. The invention is further directed to a method of manufacturing the current-limiting fuse.

A fuse element is a fuse element (1) including a flat plate-shaped blowout section (1e) with no through-hole disposed between a first terminal (20a) and a second terminal (20b), in which a width (1d) of the blowout section (1e) has a length equal to or greater than 80% of a width (2d) of each of joining portions joining the first terminal (20a) and the second terminal (20b) to the blowout section (1e). The width (1d) of the blowout section (1e) is preferably a length equal to or greater than 95% of the width (2d) of each of the joining portions.