TDK develops new compact, current-compensated ring core chokes

TDK Corporation has developed a new series of current-compensated double-ring core chokes for the suppression of common-mode interferences. Main applications for the compact EPCOS chokes are switch-mode power supplies, converters and domestic appliances. 

They are extremely small in relation to their current capacity and meet high requirements increasingly found in industrial applications such as drives, the company says. They are available in three sizes with current handling capacities between 10 A and 17 A, and with a rated voltage of 250 V AC (50/60 Hz). Depending on the type, the inductance value is between 1.0 mH and 6.25 mH. Their dimensions are 33 x 23 x 30 mm and 39 x 23 x 37 mm. Due to the leakage inductance of around 0.4%, the RoHS-compatible chokes also suppress symmetrical interferences. For more info, see