Shunt resistor

Abstract

A shunt resistor includes a resistive element, a first electrode, and a second electrode. The resistive element is a quadrilateral plate, and its vertical sides include a first side, a second side, a third side, and a fourth side. The first and second sides are parallel to each other, and the areas of the first and second sides are both larger than the areas of the third and fourth sides. The first electrode is attached to the first side and has two positioning holes for secure mounting. The tail end of the first electrode has a stepped or beveled structure. The second electrode is attached to the second side. The thickness of the resistive element is less than the thickness of both the first and second electrodes. With this structure, the shunt resistor of the present invention is suitable for sensing high currents or high-speed switching environments.

Claims

1. A shunt resistor, comprising: a resistive element made of a resistive material, the resistive element being a quadrilateral plate, the resistive element having a first side, a second side, a third side, and a fourth side on its vertical sides, the first side and the second side being parallel to each other and serving as electrode bonding surfaces of the resistive element, and the areas of the first side and the second side being larger than the areas of the third side and the fourth side; a first electrode, bonded to the first side and extending laterally along the first side, the first electrode having two positioning holes for secure mounting, the tail end of the first electrode having a stepped structure or a beveled structure, the stepped structure being a welding surface or the beveled structure being a welding surface; and a second electrode, bonded to the second side and extending laterally along the second side, wherein... The thickness of the resistive element is less than the thickness of the first electrode and the thickness of the second electrode.

2. The shunt resistor as requested in item 1, wherein the resistor body is a trapezoidal plate.

3. The shunt resistor of claim 2, wherein the area of ​​the second side is greater than the area of ​​the first side.

4. The shunt resistor of claim 1, wherein the surfaces of the first electrode and the second electrode have a nickel-tin plating layer, the nickel-tin plating layer being multilayered.

5. The shunt resistor as requested in item 1, wherein the resistive material is a manganese-copper alloy.

6. The shunt resistor as requested in item 1, wherein two of the positioning holes are provided in the stepped structure.

Images