US 12,224,090 B2
Multilayer varistor
Masashi Takamura, Hokkaido (JP); Sayaka Watanabe, Hokkaido (JP); Takeshi Fujii, Tokyo (JP); Ken Yanai, Hokkaido (JP); and Yuto Akiyama, Hokkaido (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/796,143
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Dec. 17, 2021, PCT No. PCT/JP2021/046881
§ 371(c)(1), (2) Date Jul. 28, 2022,
PCT Pub. No. WO2022/138515, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-214486 (JP), filed on Dec. 24, 2020.
Prior Publication US 2023/0079197 A1, Mar. 16, 2023
Int. Cl. H01C 7/105 (2006.01); H01C 1/148 (2006.01)
CPC H01C 7/105 (2013.01) [H01C 1/148 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer varistor comprising:
a sintered body;
a first internal electrode;
a second internal electrode;
a third internal electrode;
a first external electrode;
a second external electrode; and
a third external electrode,
the sintered body
having a first end surface and a second end surface facing each other in a first direction, a first side surface and a second side surface facing each other in a second direction, and a first principal surface and a second principal surface facing each other in a third direction,
having a stack structure including a plurality of layers stacked on each other in the third direction, and
being in a shape of a rectangular parallelepiped having long sides extending in the first direction,
the first internal electrode being disposed on a first stacking surface in an interior of the sintered body,
the second internal electrode being disposed on a second stacking surface in the interior of the sintered body, the second stacking surface being different from the first stacking surface,
the third internal electrode being disposed on a third stacking surface in the interior of the sintered body, the third stacking surface being different from the first stacking surface and the second stacking surface,
the first external electrode being electrically connected to the first internal electrode;
the second external electrode being electrically connected to the second internal electrode;
the third external electrode being electrically connected to the third internal electrode,
the first internal electrode including a first facing part and a first lead-out part, a width of the first lead-out part being less than a width of the first facing part,
the second internal electrode including a second facing part and a second lead-out part, a width of the second lead-out part being less than a width of the second facing part,
the third internal electrode including a third facing part and a third lead-out part, a width of the third lead-out part being less than a width of the third facing part,
the first internal electrode being disposed between the second internal electrode and the third internal electrode, and
in the first direction, a length of the first facing part being greater than a length of the second facing part and being greater than a length of the third facing part.