Yageo Corporation

Hwan-Wen Lee

Shen-Li Hsiao

Kuang-Cheng Lin

Chih-Lung Chen

Fu-Sheng Huang

A high-power resistor and a fabrication method thereof are provided. The method includes: providing a resistance substrate including resistance alloy material and a copper metal layer; forming a cuprous oxide layer on the resistance substrate by using the copper metal layer; sticking the resistance substrate to a ceramic substrate, in which the cuprous oxide layer is located between the resistance substrate and the ceramic substrate; performing a sintering process on the resistance substrate and the ceramic substrate to form a composite substrate; forming a plurality of terminal electrodes on the composite substrate to form the high-power resistor. Therefore, the high-power resistor includes the composite substrate and the terminal electrodes. The composite substrate includes a bonding layer disposed between the ceramic substrate and the resistance substrate to bond the resistance alloy material on the ceramic substrate, in which the bonding layer includes sintered cuprous oxide.

High-power resistor and fabrication method thereof

Current sensing resistors and a method of manufacturing the same are disclosed in the present invention. A composite material is firstly provided in the method. Then, a first portion of an alloy substrate of the composite material is removed along a first direction to form a plurality of first trenches. Next, a second portion of the alloy substrate of the composite material is removed along a second direction to form a plurality of second trenches, and a third portion of the alloy substrate of the composite material is further removed along the first direction to form the current sensing resistors. The current sensing resistors with small dimensions and an extremely low temperature coefficient of resistance can be produced rapidly by the method of the present invention.

Current sensing resistors and method of manufacturing the same

A fuse resistor includes a substrate, an insulation layer, a fuse element, a protection layer, a first electrode, and a second electrode. The insulation layer covers a surface of the substrate. The fuse element is disposed on a portion of the insulation layer. The fuse element includes a first electrode portion, a melting portion, and a second electrode portion, in which the first electrode portion and the second electrode portion are respectively connected to two opposite ends of the melting portion. The protection layer covers the fuse element and the insulation layer, in which the protection layer has a cavity located on the melting portion. The first electrode is electrically connected to the first electrode portion. The second electrode is electrically connected to the second electrode portion.

Fuse resistor and method for manufacturing the same

In a method for manufacturing a shunt resistor, a resistor plate with a first side surface and a second side surface opposite to each other is provided. A first electrode plate and a second electrode plate are respectively pressed onto the first side surface and the second side surface, thereby forming a first connection surface between the first electrode plate and the resistor plate, and a second connection surface between the second electrode plate and the resistor plate. A first conductive module is placed on opposite ends of the first connection surface, and a second conductive module is placed on opposite ends of the second connection surface. Current is applied to the first and second connection surfaces via the first and second conductive modules respectively to weld the first electrode plate and the resistor plate, and to weld the second electrode plate and the resistor plate.

Method for manufacturing shunt resistor

A method for manufacturing a shunt resistor is described. In this method, a first electrode plate and a second electrode plate are provided. The first electrode plate includes a first carrying portion having a first hole. The second electrode plate includes a second carrying portion having a second hole. A resistor plate is placed between the first and second electrode plates. The resistor plate has a first through hole and a second through hole respectively on the first hole and the second hole. A first rivet is pressed into the first through hole and the first hole. A second rivet is pressed into the second through hole and the second hole. Current is applied to the first rivet and the second rivet to weld the first rivet, the first electrode plate and the resistor plate, and to weld the second rivet, the second electrode plate and the resistor plate.

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Kaohsiung, Taiwan

Hwan-Wen Lee