DANSK DSF/PREN IEC 63093-9 PDF

This Part of IEC 63093 specifies the shapes and dimensions of ferrite cores for inductive components (transformers and chokes) of which the coil is typically constructed by multi-layer board or the coil is part of the motherboard and the effective parameter values to be used in calculations. This part of IEC 63093 gives guidelines on allowable limits of surface irregularities applicable to planar cores as well. This standard is considered as a sectional specification useful in the negotiation between ferrite core manufacturers and users about surface irregularities. The general consideration upon which the design of this range of cores is based is given in Annex A.