IEC 62317-4 Ed. 1.0 en:2005

Specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of RM-cores and low-profile RM-cores made of ferrite, and the locations of their terminal pins on a 2,54 mm printed wiring grid in relation to the base outlines of the cores. Also specifies the test conditions and clamping forces to be used for inductance measurement.