TDK B827xx series current-compensated ring core chokes

TDK Corporation presents a new series of current-compensated EPCOS double-ring core chokes for the suppression of common-mode interferences. These chokes are available in three sizes with current handling capacities between 10A and 17A, and with a rated voltage of 250VAC (50/60 Hz). Depending on the type, the inductance value is between 1mH and 6.25mH. The plastic material of the base plate and spacer in the middle of the ring core conforms with UL 94V-0, and the highest CTI value of >600. In order to meet the high requirements for specific applications in domestic appliances, in accordance with IEC 60335-2-xx, the plastic meets 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 33mm x 23mm x 30 mm and 39mm x 23mm x 37 mm. Due to the leakage inductance of around 0.4%, the RoHS-compatible ring core chokes also suppress symmetrical interferences. The main areas of application are switch-mode power supplies, converters and domestic appliances.