High-current choke series for up to 71A


The B82559 series (ERU25) from TDK is a series of helically wound SMD high-current chokes with current capabilities of up to 71A. The ERU25 is based on improved ferrite cores and the flat rectangular wires that allow a copper filling factor of almost 100 percent.

The low core losses and compact terminal areas of the self-supporting winding mean an excellent energy storage density. Despite its high performance, these chokes have a footprint of only 23.5 x 25.3mm2 and insertion heights that vary between 8.95 and 12.85mm.

The inductance values cover the range from 0.44 to 10 uH, and its permissible rated currents are between 24 and 71A for series resistances of 0.2 to 2.2 mohm.


Features
•  High rated current, up to 71A
•  Extremely low DC resistance
•  Rated inductance: 0.44 to 10 uH
•  Series resistances: 0.2 to 2.2 mohm
•  Very low profile and extremely small footprint (23.5 x 25.3mm2)
•  Suitable for pick-and-place processes
•  RoHS-compatible
•  Easily customized


Applications
•  DC/DC converters
•  Distributed power supplies
•  Intermediate bus converters
•  VRM modules
•  POL converters
•  Solar converters



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