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Large Size Ferrite Cores for High Power
Summary
Issue date:
November 2010
• All specifications are subject to change without notice.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
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Related Manuals for TDK Ferrites EE320x250x20
Summary of Contents for TDK Ferrites EE320x250x20
- Page 1 Large Size Ferrite Cores for High Power Summary Issue date: November 2010 • All specifications are subject to change without notice. • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
- Page 2 To meet these various demands, we at TDK have employed our ferrite development technologies accumulated over the years and advanced production technologies to offer large, high-quality cores for high-frequency, high-power power supplies.
- Page 3 FEATURES • Large size ferrite cores developed for reactors and transformers used in high power units. • Please contact us for machinability of non-standard special forms. MATERIAL CHARACTERISTICS (Typical) Material µ Initial permeability [23°C] Curie temperature Saturation magnetic flux density [23°C] H=1194A/m [100°C]...
- Page 4 CORE LOSS vs. FREQUENCY CHARACTERISTICS MATERIAL:PE22 10000 Material : PE22 Temp.23˚C 1000 1000 Frequency (kHz) 10000 Material : PE22 Temp.60˚C 1000 1000 Frequency (kHz) 10000 Material : PE22 Temp.90˚C 1000 1000 Frequency (kHz) 10000 Material : PE22 Temp.120˚C 1000 1000 Frequency (kHz) •...
- Page 5 MATERIAL:PC40 10000 Material : PC40 Temp.23˚C 1000 1000 Frequency (kHz) 10000 Material : PC40 Temp.60˚C 1000 1000 Frequency (kHz) 10000 Material : PC40 Temp.90˚C 1000 1000 Frequency (kHz) 10000 Material : PC40 Temp.120˚C 1000 1000 Frequency (kHz) • All specifications are subject to change without notice. 10000 Material : PC40 Temp.40˚C...
- Page 6 MATERIAL:PE90 10000 Material : PE90 Temp.23˚C 1000 1000 Frequency (kHz) 10000 Material : PE90 Temp.60˚C 1000 1000 Frequency (kHz) 10000 Material : PE90 Temp.90˚C 1000 1000 Frequency (kHz) 10000 Material : PE90 Temp.120˚C 1000 1000 Frequency (kHz) • All specifications are subject to change without notice. 10000 Material : PE90 Temp.40˚C...
- Page 7 SATURATION MAGNETIC FLUX DENSITY vs. TEMPERATURE CHARACTERISTICS PE22 PE90 PC40 Temperature ( ˚C ) AMPLITUDE PERMEABILITY vs. SATURATION MAGNETIC FLUX DENSITY CHARACTERISTICS 7000 Material : PE22 f=16kHz 6000 5000 4000 120 ˚ C 100 ˚ C 80 ˚ C 60 ˚ C 3000 40 ˚...
- Page 8 DIMENSIONAL RESONANCE Dimensional resonance is a phenomenon which increases loss and decreases magnetic permeability by electromagnetic standing waves when the magnetic field of the core frequency is applied. The phenomenon appears when the maximum dimension of the cross section of the core perpendicular to the magnetic field is the integral multiple of about half of the electromagnetic wavelength λ= ε...