High frequency and high power thin-film component
US-12543329-B2 · Feb 3, 2026 · US
Resistance alloy for use in shunt resistor, use of resistance alloy in shunt resistor, and shunt resistor using resistance alloy
US12437904B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12437904-B2 |
| Application number | US-202118022926-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 16, 2021 |
| Priority date | Aug 31, 2020 |
| Publication date | Oct 7, 2025 |
| Grant date | Oct 7, 2025 |
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- Title
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Abstract
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Provided is a current detection resistor, such as a shunt resistor, wherein a. low specific resistance and a small thermal electromotive force with respect to copper are achieved, while maintaining a low TCR. A resistance alloy for use in a current detection shunt resistor includes 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being copper, and has a specific resistance of 15 to 25 μΩ·m.
First claim
Opening claim text (preview).
What is claimed is: 1. A resistance alloy for use in a current detection shunt resistor, the resistance alloy being a quaternary alloy consisting of copper, manganese, silicon, and iron, and comprising 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being copper, and having a specific resistance of 15 to 25 μΩ·cm, wherein a silicon oxide is formed on a surface of the resistance alloy. 2. The resistance alloy according to claim 1 , having a temperature coefficient of resistance (“TCR”) less than or equal to 100×10 −6 /K. 3. The resistance alloy according to claim 1 , having a thermal electromotive force with respect to copper within ±μV/K. 4. Use of the resistance alloy according to claim 1 , in a resistive body of a shunt resistor for use in a current detection device. 5. A current detection shunt resistor comprising a resistive body and an electrode, wherein the resistive body is a quaternary alloy consisting of copper, manganese, silicon, and iron, and comprising 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being copper, and having a specific resistance of 15 to 25 μΩ·cm, and wherein a silicon oxide is formed on a surface of the resistive body.
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Classifications
current-responsive · CPC title
of copper or alloys based thereon · CPC title
in inert or controlled atmosphere or vacuum (adjusting the composition of the atmosphere C21D1/76) · CPC title
with manganese as the next major constituent · CPC title
Apparatus or processes specially adapted for the manufacture {or maintenance} of measuring instruments {, e.g. of probe tips} · CPC title
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- What does patent US12437904B2 cover?
- Provided is a current detection resistor, such as a shunt resistor, wherein a. low specific resistance and a small thermal electromotive force with respect to copper are achieved, while maintaining a low TCR. A resistance alloy for use in a current detection shunt resistor includes 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being c…
- Who is the assignee on this patent?
- Koa Corp
- What technology area does this patent fall under?
- Primary CPC classification H01C1/00. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 07 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).