公开(公告)号：US20180096759A1

公开(公告)日：2018-04-05

申请号：US15558715

申请日：2017-04-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUHARU KINOSHITA ,  SHOJI HOSHITOKU ,  HIRONORI TSUBOTA ,  YASUHIRO KASHIMA

IPC: H01C1/142 ,  H01C17/28 ,  H01L49/02

CPC classification number: H01C1/142 ,  H01C17/28 ,  H01L28/20

Abstract: A chip resistor includes a resistive element, first and second electrodes disposed on a lower surface the resistive element, a protective film disposed on the lower surface of the resistive element and between the first and second electrodes. The resistive element has first and second recesses therein. The first recess extends from the lower surface along a first edge surface and does not reach an upper surface of the resistive element. The second recess extends from the lower surface along a second edge surface and does not reach the upper surface of the resistive element. The first and second electrodes are disposed between the first and second recesses. The protective film is disposed between the first and second electrodes. A first plating layer disposed on the first electrode and an inner surface of the first recess. A second plating layer is disposed on the second electrode and an inner surface of the second recess. This chip resistor avoids mounting failures.

公开(公告)号：US20200075200A1

公开(公告)日：2020-03-05

申请号：US16495387

申请日：2018-05-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUHARU KINOSHITA

IPC: H01C1/144 ,  H01C17/28 ,  H01C17/00 ,  H01C7/00

Abstract: An object of the present disclosure is to provide a metal plate resistor that is capable of reducing a resistance value and a TCR. A metal plate resistor according to the present disclosure includes: a resistor body that includes a metal plate having an upper surface and a lower surface that are spaced apart from each other in a thickness direction; a pair of electrodes that include a metal having a low electrical resistivity and a high TCR in comparison with this resistor body, the pair of electrodes being formed in both ends of the lower surface of the resistor body; and an internal electrode that is formed on the upper surface of the resistor body. The internal electrode includes a metal having a low electrical resistivity in comparison with the resistor body.

公开(公告)号：US20200051716A1

公开(公告)日：2020-02-13

申请号：US16321491

申请日：2017-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YASUHARU KINOSHITA ,  TAKAAKI TAMURA

IPC: H01C1/14 ,  H01C7/00 ,  H01C17/00 ,  H01C1/01

Abstract: An object of the present disclosure is to provide a chip resistor capable of suppressing degradation of long-term reliability, and a method for producing the chip resistor. The chip resistor of the present disclosure includes resistance member (11) formed of metal, and a pair of electrodes (12) respectively formed on both ends of first main surface (11a) of resistance member (11). The chip resistor further includes first protective film (13) formed on second main surface (11b) located on a rear side of first main surface (11a) of resistance member (11), second protective film (14) formed on first main surface (11a) of resistance member (11) and between the pair of electrodes (12), and a third protective film formed on a side surface parallel to a direction of a current flowing between the pair of electrodes (12) of resistance member (11). The side surface of resistance member (11) is provided with a protrusion that protrudes outward when viewed along the current flowing direction.