IEC 60424-8:2015 gives guidance on allowable limits of surface irregularities applicable to PQ-cores in accordance with the relevant generic specification. This standard is considered as a sectional specification useful in the negotiation between ferrite core manufacturers and users about surface irregularities.
IEC 63093-13:2019 specifies the dimensions that are of importance for mechanical interchangeability for a preferred range of PQ-cores and low-profile PQI-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. It also gives guidance on allowable limits of surface irregularities applicable to PQ-cores in accordance with the relevant generic specification. This first edition cancels and replaces the second edition of IEC 62317-13 published in 2015 and the first edition of IEC 60424-8 published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous editions of IEC 62317-13 and IEC 60424-8: a) IEC 63093-13 integrates IEC 62317-13 and IEC 60424-8; b) IEC 60424-8:2015, Table 1, has been included in Annex B as Table B.1. The contents of the corrigendum of May 2024 have been included in this copy.
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