US 12,267,057 B2
Multilayer filter
Jun Nakatsutsumi, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK Corporation, Tokyo (JP)
Filed on Dec. 28, 2022, as Appl. No. 18/147,044.
Claims priority of application No. 2022-017773 (JP), filed on Feb. 8, 2022.
Prior Publication US 2023/0253944 A1, Aug. 10, 2023
Int. Cl. H03H 7/01 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 27/32 (2006.01); H03H 1/00 (2006.01)
CPC H03H 7/0115 (2013.01) [H01F 27/2852 (2013.01); H01F 27/29 (2013.01); H01F 27/32 (2013.01); H03H 2001/0085 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A multilayer filter comprising:
an element body formed by laminating a plurality of insulator layers;
a first inductor and a second inductor; and
a wall portion disposed between the first inductor and the second inductor and grounded,
wherein at least the second inductor is a vertical winding type inductor of which a winding axis extends in a direction orthogonal to a laminating direction in which the plurality of insulator layers are laminated,
a penetrating portion penetrating in a facing direction in which the first inductor and the second inductor face each other is formed in the wall portion, and
a size of the penetrating portion in the laminating direction is larger than a size of one insulator layer.