EMI suppression filter, rfi EMI filter, electromagnetic interference filter

 BNX02 Series 9.1 x 12.1 x 3.1 mm 100 V 500 mΩ 15 A SMT Block EMI Filter

https://www.futureelectronics.com/p/passives--filters--emi-filters/bnx023-01l-murata-3002422