B8272 Compact Current-Compensated Ring Core Chokes

TDK's series of current-compensated EPCOS double-ring core chokes are designed for the suppression of common-mode interferences. These chokes are available in three sizes with current handling capacities between 10 A and 17 A and with a rated voltage of 250 V_AC (50 Hz/60 Hz). Depending on the type, the inductance value is between 1.0 mH and 6.25 mH. The plastic material of the base plate and spacer in the middle of the ring core conforms with UL 94 V-0 and the highest CTI value of >600. In order to meet the higher requirements for specific applications in domestic appliances, in accordance with IEC 60335-2-xx, the plastic meets the specifications for GWIT (+775°C), GWFI (+850°C) and Ball Pressure (+190°C), as well as CTI >250. These high requirements are increasingly found in industrial applications such as drives.

These EMC components offer extremely small dimensions in relation to the current capacity, with dimensions of between 33 mm x 23 mm x 30 mm and 39 mm x 23 mm x 37 mm. Thanks to the leakage inductance of around 0.4%, the RoHS compatible ring core chokes also suppress symmetrical interferences.