Resumen:
IEC 61333:2019 specifies marking locations and a coding system of
marking on ferrite cores. An alphanumerical marking printed or
attached to cores reduces the risk of incorrect assembly, mixing of
materials and/or mixing of gapped cores on an assembly line. The
markings of the inductance factor AL value or of the gap length are
especially important to avoid this kind of problem, and their
coding system is specified in this document.
This edition includes the following significant technical
changes with respect to the previous edition：
a) the title of the document was changed;
b) the scope of this document was expanded;
c) the marking position instructions for ring cores, planar
cores, RM-cores, PQ-cores and pot-cores were added in Clause 4 with
a few additional descriptions;
d) the four-digit-maximum limit of material identification
code has been deleted in 5.2;
e) in Table 1, the unit of AL has been changed from "nH" to
"nH/N2".
Keywords:
Magnetic materials, Magnetic cores, Air gaps (magnetic circuits), Ferrites, Electrical components