IEC 62317-14 pdf download

IEC 62317-14 pdf download

IEC 62317-14 pdf download Ferrite cores – Dimensions – Part 14: EFD-cores for use in power supply applications
1 scope
This part of lEC 62317 specifies the dimensions that are of importance for mechanicalinterchangeability for a preferred range of EFD-cores, the essential dimensions of coil formers tobe used with them , and the effective parameter values to be used in calculations involving them.
The selection of core sizes for this standard is based on the philosophy of including those sizeswhich are industrial standards, either by inclusion in national standards, or by broad-based use inindustry.See IEC 62317-1 for more detail concerning the philosophy of selecting core sizes to beincluded.
The general considerations that the design of this range of cores is based upon are given inAnnex A.
2Normative references
The following referenced documents are indispensable for the application of this document.Fordated references, only the edition cited applies. For undated references, the latest edition of thereferenced document (including any amendments) applies.
IEC 60205,Calculation of the effective parameters of magnetic piece partsIEC 62317-1,Ferrite cores – Dimensions – Part 1 : General specification
3Primary standards
Compliance with the following requirements ensures mechanical interchangeability of completeassemblies and wound coil formers.
3.1 Dimensions of EFD-cores
3.1.1 Principal dimensions
The principal dimensions of EFD-cores shall be as given in Figure 1 and Table 1.
3.1.2 Effective parameter and A min values
The effective parameter values for cores having the dimensions given in 3.1 .1 are as shown in Table 2.
3.2 Main dimensions for coil formers
The main dimensions of coil formers suitable for use with a pair of EFD-cores shall be as given in Figure 2 and Table 3.
3.3 Pin locations and base outlines
These shall be as shown in Figures 3 and 4, in which the base is viewed in the mounting direction,i.e. from the upper side of the printed wiring board.

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