Shunt resistor and method of manufacturing shunt resistor
AssigneeRohm Co., Ltd.
InventorKentaro NAKA
Life of this patent
Estimating the term…
Abstract
A shunt resistor includes: a resistive element; and a first terminal portion and a second terminal portion. The resistive element has a first end and a second end in a second direction orthogonal to a first direction that is a thickness direction of the resistive element, the second end being an end opposite to the first end, and the resistive element has a third end and a fourth end in a third direction orthogonal to the first direction and the second direction, the fourth end being an end opposite to the third end. The first terminal portion and the second terminal portion are joined to the first end and the second end, respectively.
Claims8
A shunt resistor comprising:
- a resistive element;
- and
- a first terminal portion and a second terminal portion, wherein
- the resistive element has a first end and a second end in a second direction orthogonal to a first direction that is a thickness direction of the resistive element, the second end being an end opposite to the first end, and the resistive element has a third end and a fourth end in a third direction orthogonal to the first direction and the second direction, the fourth end being an end opposite to the third end,
- the first terminal portion and the second terminal portion are joined to the first end and the second end, respectively,
- a first slit is formed in the third end,
- each of the first terminal portion and the second terminal portion has a fifth end and a sixth end, the fifth end being an end on the resistive element side, the sixth end being an end opposite to the fifth end,
- a second slit extending along the second direction toward the fifth end is formed in the sixth end, and
- a position of the second slit in the third direction is close to the third end with respect to a center of the resistive element in the third direction.
A method of manufacturing a shunt resistor, the method comprising:
- preparing a plurality of shunt resistors;
- and
- performing trimming, wherein
- each of the plurality of shunt resistors includes a resistive element, a first terminal portion, and a second terminal portion,
- the resistive element has a first end and a second end in a second direction orthogonal to a first direction that is a thickness direction of the resistive element, the second end being an end opposite to the first end, and the resistive element has a third end and a fourth end in a third direction orthogonal to the first direction and the second direction, the fourth end being an end opposite to the third end,
- the first terminal portion and the second terminal portion are joined to the first end and the second end, respectively,
- a first slit is formed in the third end,
- each of the first terminal portion and the second terminal portion has a fifth end and a sixth end, the fifth end being an end on the resistive element side, the sixth end being an end opposite to the fifth end,
- a second slit extending along the second direction toward the fifth end is formed in the sixth end,
- a position of the second slit in the third direction is close to the third end with respect to a center of the resistive element in the third direction,
- in the plurality of shunt resistors, respective lengths of the first slits in the second direction are the same,
- in the performing trimming, a third slit is formed in the fourth end of each of the plurality of shunt resistors so as to adjust an electrical resistance value of each of the plurality of shunt resistors, and
- a length of the third slit in the third direction is smaller than a length of the first slit in the third direction.
Dependencies are inferred from the claim text.