What is BS EN IEC 63093-13-Limits of surface irregularities of PQ-cores about?

BS EN IEC 63093 is an international standard that discusses ferrite cores. The main objective of the BS EN IEC 63093 series is to ensure ferrite cores meet the required quality and performance levels so as to effectively avoid electromagnetic interference.

BS EN IEC 63093-13 is the 13th part of a multi-series 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. BS EN IEC 63093-13 also gives the best guidance on allowable limits of surface irregularities applicable to PQ-cores in accordance with the relevant generic specification.

The selection of core sizes for BS EN IEC 63093-13 is based on the philosophy of including those sizes which are industry standards, either by inclusion in a national standard or by broad-based use in industry.

Who is BS EN IEC 63093-13- Limits of surface irregularities of PQ-cores for?

BS EN IEC 63093-13 on ferrite cores is relevant to:

Manufacturers of ferrite cores
Manufacturers and suppliers of PQ-cores
Transformer and inductor manufacturers
Electronics industry

Why should you use BS EN IEC 63093-13- Limits of surface irregularities of PQ-cores?

A ferrite core is a type of magnetic core made of ferrite on which the windings of electric transformers and other wound components such as inductors are formed. Due to the method of manufacture and the physical nature of the products, ferrite cores can be expected to exhibit some degree of physical irregularities such as chips, ragged edges, cracks, flashing, and pull-outs. PQ cores are designed specifically for switched-mode power supplies. This design provides an optimized ratio of volume to the winding area and surface area.

BS EN IEC 63093-13 gives guidance on allowable limits of surface irregularities applicable to PQ-cores in accordance with the relevant generic specification.

BS EN IEC 63093-13 also helps identify surface defects in pot-cores, such as chips, cracks, ragged edges, pores and pull-out, which helps in mitigating overall application performance concerns. The limits of these surface irregularities are helpful to determine the extent of damage due to which product failure can occur.

Compliance with the best industry requirements on dimensions provided by BS EN IEC 63093-13 ensures mechanical interchangeability of complete assemblies and wound coil formers.

What’s changed since the last update?

BS EN IEC 63093-12:2019 supersedes BS EN 60424-8:2015 and BS EN 62317-13:2015, which are withdrawn. The significant technical changes are:

IEC 63093-13 integrates IEC 62317-13 and IEC 60424-8
IEC 60424-8:2015, Table 1, has been included in Annex B as Table B.1

BS EN IEC 63093-13:2019

Ferrite cores. Guidelines on dimensions and the limits of surface irregularities - PQ-cores

Current

Published:

30 Sep 2019