829results about "Fuse device manufacture" patented technology

The invention concerns a membrane electrode unit (MEU) for electrochemical equipment, especially for membrane fuel cells. The membrane electrode unit has a “semi-coextensive” design and contains an ionically conductive membrane, two catalyst layers, and gas distributor substrates of different sizes on the front and back sides. The first gas distributor substrate has smaller surface dimensions than the ionically conductive membrane, while the second gas distributor substrate has the same area as the ionically conductive membrane. The membrane electrode unit has, because of its special design, a stable structure that can be handled well, and which exhibits advantages for sealing the reactive gases off from each other and in its electrical properties. In particular, the hydrogen penetration current is distinctly reduced. The membrane electrode unit is used in PEM fuel cells, direct methanol fuel cells, electrolyzers, and other electrochemical equipment.

A low resistance fuse apparatus and methods of manufacture includes a first intermediate insulation layer, a second intermediate insulation layer, and a free standing fuse element layer independently formed and fabricated from each of the first and second intermediate insulation layers, The fuse element layer includes first and second contact pads and a fusible link extending therebetween. The first and second intermediate insulation layers extend on opposite sides of the free standing fuse element layer and are laminated together with the fuse element layer therebetween.

A surface mount fuse includes a plurality of substrate/arc suppressive layers, a plurality of fusible elements positioned between the substrate/arc suppressive layers and terminations connected to the ends of the fusible elements, such that the fusible elements are electrically connected in parallel. The surface mount fuse has greater amperage and voltage ratings than similarly sized conventional surface mount fuses. Additionally, the surface mount fuse has increased interrupt breaking capacity and superior mechanical properties.

A fuse has a pair of lead terminals disposed on a substrate, an intermediate layers for welding formed on the surface of at least one of the lead terminals, and a fuse element. The fuse element is welded to the pair of lead terminals through the intermediate layer so as to span the same. Further, the intermediate layer is formed on at least one of the lead terminals except a face thereof opposing each other. Owing to this configuration, after the fuse has melted down, the melted fuse element is prevented from being spread out into the space between the opposing faces of the lead terminals and insulation therebetween is secured.

A structure and method for making a cavity fuse over a gate conductor stack. The method includes providing a semiconductor substrate having a gate conductor stack over a shallow trench isolation region, forming oxide layers on the substrate about the gate conductor stack, etching electrical contact holes through the oxide layers to the substrate, filling the electrical contact holes with a first conductive material to establish electrical contact with the gate conductor stack, etching a pattern in an uppermost oxide layer of the oxide layers, depositing a conductive layer of a second conductive material over the oxide layers and the electrical contacts, planarizing the conductive layer whereby the conductive material remains only in the pattern, anisotropically etching the oxide layers to form at least one etching hole through the oxide layers to the shallow trench isolation region, and isotropically etching at least a portion of the oxide layers about the etching hole, whereby a cavity is formed beneath at least a portion of the conductive layer pattern, the gate conductor stack comprising a fuse.

An electrical fuse structure is disclosed. The electrical fuse structure includes: a fuse element disposed on surface of a semiconductor substrate; an anode electrically connected to one end of the fuse element; and a cathode electrically connected to another end of the fuse element, wherein no silicide is formed on at least part of the cathode of the electrical fuse structure.

The invention discloses an automatic assembly machine for a lead protective tube, wherein through the arrangement of a turntable type material clamping device, a tube body automatic material feeding device, an automatic wire feeding and cutting-off bending device, and an end cap automatic material feeding and pressing device, the production processes of tube body taking, fuse wire penetration, fuse wire cutting and bending, fuse wire penetration condition detection, end cap pressing and blanking can be automatically and sequentially completed, and finished products of the lead protective tube are obtained, so the assembly work of the lead protective tube can be automatically completed, the consistency of the finished products of the lead protective tube obtained through production is good, the production yield and the production efficiency are respectively and greatly improved, production personnel are greatly decreased, the work intensity of the production personnel is lowered, meanwhile, the production cost is reduced, and good practicality is realized.

In sophisticated integrated circuits, an electronic fuse may be formed such that an increased sensitivity to electromigration may be accomplished by including at least one region of increased current density. This may be accomplished by forming a corresponding fuse region as a non-linear configuration, wherein at corresponding connection portions of linear segments, the desired enhanced current crowding may occur during the application of the programming voltage. Hence, increased reliability and more space-efficient layout of the electronic fuses may be accomplished.

In order to provide a current fuse with high solderability without containing harmful materials, solder chips containing 30 to 60 percent by weight of zinc, 0.1 to 2 percent by weight of copper, 0.1 to 1 percent by weight of nickel, and the remainder percent by weight being tin, or further containing 0.01 to 0.5 percent by weight of aluminum are inserted into the interior of the electrodes before pressing the electrodes into the ends of the substrate of the fuse, the exterior of the electrodes is heated to melt the solder chips, thereby connecting between the electrodes and the fuse wire.

The invention discloses a suspended-fuse-wire-type surface-mount fuse and a manufacturing method thereof. In the fuse, an exposed end of a fuse wire is bent to be close to the end face of an insulator such that an end face electrode covers the total surface of the exposed bent end of the fuse wire; for a newly manufactured fuse, all of the bent end of the fuse wire is in contact with the end face electrode; when the fuse is under thermal shock, the fuse wire and the end face electrode can be ensured to be communicated with each under the condition that all the bent end of the fuse wire is ensured to be in contact with the end face electrode even though the fuse wire, the end face electrode and the insulator are subjected to harmomegathus difference, thus the reliability of the connection between the fuse wire and the end face electrode can be ensured; furthermore, if the bent end of the fuse wire, exposed out of the insulator, is totally arranged in the end face electrode in the fuse, the protection on the fuse and the prevention of flashover of a molten fuse wire on the end face during fuse melting are further ensured. A plurality of fuses are manufactured on a large substrate at the same time, and single fuses are separated in a cutting manner, thus the batch processing of the fuses is realized, and the production efficiency is improved; in addition, the end face electrodes of the manufactured fuses cover the whole end face and the bent end of the fuse wire, thus the weldability of the fuse on a PCB (Printed Circuit Board) is improved.

The invention discloses a novel protective tube welding mechanical device. The novel protective tube welding mechanical device comprises a cuboid-shaped mobile base, moving mechanisms are arranged at four corners of the lower surface of the mobile base, two groups of electric wire terminal crimping devices, a welding mechanism and a protective tube feeding mechanism are arranged on the mobile base, the welding mechanism is located between the two groups of the electric wire terminal crimping devices, the protective tube feeding mechanism is located at the back of the welding mechanism, each electric wire terminal crimping device comprises a feeding mechanism, a wire twisting mechanism, a terminal crimping mechanism and a rotary grapping mechanism, the height of the wire twisting mechanism is larger than the heights of the feeding mechanism and the terminal crimping mechanism, the rotary grapping mechanism is arranged opposite to the feeding mechanism, the wire twisting mechanism and the terminal crimping mechanism, and the controller is respectively electrically connected with the two groups of electric wire terminal crimping devices, the welding mechanism and the protective tube feeding mechanism. The novel protective tube welding mechanical device has the beneficial effects of simple structure and strong practicability.

A high voltage power fuse having a dramatically reduced size facilitated by silicated filler material, a formed fuse element geometry, arc barrier materials and single piece terminal fabrications. Methods of manufacture are also disclosed.

Quantity of flux coated on fusible alloy of a thermal fuse disclosed can be inspected accurately by an image processing method. The thermal fuse comprises:

• • (a) first insulation film 11 coupled with a pair of metal terminals 12;
  • (b) fusible alloy 13 coupled between ends of the metal terminals 12, being placed above first insulation film 11;
  • (c) flux 14 coated on fusible alloy 13; and
  • (d) second insulation film 15 disposed on first insulation film 11 so that an internal space is formed, being placed above fusible alloy 13,
  • wherein at least either of first insulation film 11 or second insulation film 15 is transparent or translucent, and flux 14 has the Gardner color scale from 4 to 16.

An alloy type thermal fuse is provided in which a ternary Sn—In—Bi alloy is used, the operating temperature belongs to the range of 130 to 170° C., the overload characteristic and the dielectric breakdown characteristic are excellent, the insulation stability after an operation can be sufficiently ensured, and thinning of a fuse element can be easily realized. A fuse element having an alloy composition in which Sn is larger than 43% and 70% or smaller, In is 0.5% or higher and 10% or lower, and a balance is Bi is used.

A temperature fuse protection device uses a hot melt metal to rivet for connecting two terminals in the circuit that are separated for making the two terminals electrically-connected and the circuit complete. There is a spacing in between the two free ends of the two terminals when no external force is being imposed. When an electric overloading or high circuit temperature event occurs, the hot melt metal would be heated to melt and break, which would then make the free ends of the two terminals to be disconnected, and therefore, the circuit will be at “OFF” status.

The invention is concerned with a kind of process equipment for produce production, especially a kind of wire feeding welding machine with fuse for fusible core. The worktable fixed on the frame has turning plate frame with at least four tasks and the task has movable clamp extended among the radial direction, and at the corresponding position to each task, there are tube push framework, wire feeding welding upper cap framework, welding down cap framework, location framework and stuff-accepting framework on the surface of worktable. Except the stuff-accepting framework, each of the aforesaid framework drives by each cam and drive pole under the worktable. The tube push framework connects with tube feeding equipment, and the wire feeding welding upper cap framework connects with upper cap feeding equipment, the welding down cap framework connects with down cap feeding equipment. The worktable and / or turning plate has equipment that keeps clamp moving. The drive axis drives by motor, the feeding equipment, heating equipment and motor of the tube, upper cap and down cap monitors by power control equipment.

Structure providing more reliable fuse blow location, and method of making the same. A vertical metal fuse blow structure has, prior to fuse blow, an intentionally damaged portion of the fuse conductor. The damaged portion helps the fuse blow in a known location, thereby decreasing the resistance variability in post-blow circuits. At the same time, prior to fuse blow, the fuse structure is able to operate normally. The damaged portion of the fuse conductor is made by forming an opening in a cap layer above a portion of the fuse conductor, and etching the fuse conductor. Preferably, the opening is aligned such that the damaged portion is on the top corner of the fuse conductor. A cavity can be formed in the insulator adjacent to the damaged fuse conductor. The damaged fuse structure having a cavity can be easily incorporated in a process of making integrated circuits having air gaps.

A protective element including a substrate having a first insulating member and a concave portion formed thereon, a heating body layered on the concave portion of the substrate, a second insulating member layered on the substrate so as to cover at least covering the heating body, first and second electrodes layered on a surface of the substrate on which the second insulating member is layered, a heating body electrode layered on the second insulating member so as to be superimposed with the heating body, and electrically connected to a current path between the first and the second electrodes as well as onto and the heating body, and a low-melting point metal layered from the heating body electrode toward the first and the second electrodes configured to cause a blowout of the current path between the first and the second electrodes by heating.