B66305G0000X145 EPCOS AG, B66305G0000X145 Datasheet - Page 3

• Manufacturer Part Number: B66305G0000X145
• Description: E/elp Cores And Accessories
• Manufacturer: EPCOS AG

Mechanical stress and mounting
Ferrite cores have to meet mechanical requirements during assembling and for a growing number of
applications. Since ferrites are ceramic materials one has to be aware of the special behavior under mechanical
load.
As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing or tensile
load. Especially high cooling rates under ultrasonic cleaning and high static or cyclic loads can cause cracks or
failure of the ferrite cores.
For detailed information see Data Book 2007, chapter “Definitions”, section 8.1.
Effects of core combination on A
Stresses in the core affect not only the mechanical but also the magnetic properties. It is apparent that the initial
permeability is dependent on the stress state of the core. The higher the stresses are in the core, the lower is
the value for the initial permeability. Thus the embedding medium should have the greatest possible elasticity.
For detailed information see Data Book 2007, chapter “Definitions”, section 8.2.
Heating up
Ferrites can run hot during operation at higher flux densities and higher frequencies
NiZn-materials
The magnetic properties of NiZn-materials can change irreversible in high magnetic fields
Processing notes
− The start of the winding process should be soft. Else the flanges may be destroid.
− To strong winding forces may blast the flanges or squeeze the tube that the cores can no more be mount.
− To long soldering time at high temperature (>300 °C) may effect coplanarity or pin arrangement.
− Not following the processing notes for soldering of the J-leg terminals may cause solderability problems at
− The dimensions of the hole arrangement have fixed values and should be understood as a recommendation
Please read Cautions and warnings and
Important notes at the end of this document.
Ferrites and accessories
Cautions and warnings
the transformer because of pollution with Sn oxyd of the tin bath or burned insulation of the wire. For detailed
information see Data Book 2007, chapter “Processing notes”, section 2.2.
for drilling the printed circuit board. For dimensioning the pins, the group of holes can only be seen under
certain conditions, as they fit into the given hole arrangement. To avoid problems when mounting the
transformer, the manufacturing tolerances for positioning the customers' drilling process must be considered
by increasing the hole diameter.
L
value
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