Current sensor

A current sensor, comprising:

• at least one magnetoelectric conversion element;
• a first lead frame having a first terminal portion and a conductive portion coupled to the first terminal portion, wherein a measurement current measured by the at least one magnetoelectric conversion element flows through the first terminal portion and the conductive portion;
• a signal processing IC that processes a signal output from the at least one magnetoelectric conversion element, arranged on a second surface side opposing a first surface of the conductive portion, having a circuit surface facing the second surface, with the at least one magnetoelectric conversion element arranged thereon;
• and
• a sealing portion that seals the at least one magnetoelectric conversion element, the conductive portion and the signal processing IC,
• wherein the conductive portion has:
• a first portion coupled to the first terminal portion;
• and
• a second portion arranged facing the circuit surface of the signal processing IC, being shifted with respect to the first portion and coupled to the first portion in a direction away from the circuit surface of the signal processing IC in a thickness direction;
• wherein the second portion has a third corner between a second end surface on a side coupled to the first portion and a first surface opposing a second surface facing the circuit surface of the signal processing IC;
• and
• an outer surface area of the third corner is greater than an outer surface area of a fourth corner between the second end surface of the second portion and a first surface of the first portion, which is on a side identical to the first surface of the second portion.

A current sensor, comprising:

• at least one magnetoelectric conversion element;
• a first lead frame having a first terminal portion and a conductive portion coupled to the first terminal portion, wherein a measurement current measured by the at least one magnetoelectric conversion element flows through the first terminal portion and the conductive portion;
• a signal processing IC that processes a signal output from the at least one magnetoelectric conversion element, having a circuit surface with the at least one magnetoelectric conversion element arranged thereon;
• a second lead frame, electrically insulated from the first lead frame, arranged to face the first terminal portion with the signal processing IC sandwiched therebetween in a planar view, having a second terminal portion electrically coupled to the signal processing IC and a support portion that supports the signal processing IC on a first surface;
• and
• a sealing portion that seals the at least one magnetoelectric conversion element, the conductive portion, the signal processing IC and the support portion,
• wherein the conductive portion includes a first sheared surface that is a step or an end surface with a sheared surface, on a side closer to the first terminal portion than the signal processing IC in a planar view and facing toward a side of the second terminal portion, with an outer surface area of a fifth corner closer to a second surface opposing the first surface of the support portion being greater than an outer surface area of a sixth corner further from the second surface at a corner of the first sheared surface.