FERROXCUBE DATA SHEET 4F1 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 4F1 4F1 SPECIFICATIONS A very high frequency NiZn power material for use in power and general purpose transformers optimized for frequencies of 4 - 10 MHz. SYMBOL µi µa B PV ρ TC density CONDITIONS 25 °C; ≤10 kHz; 0.25 mT 100 °C; 25 kHz; 200 mT 25 °C; 10 kHz; 3000 A/m 100 °C; 10 kHz; 3000 A/m 100 °C; 3 MHz; 10 mT 100 °C; 10 MHz; 5 mT DC; 25 °C VALUE MBW293 10 3 handbook, halfpage 4F1 µ's , µ''s UNIT ≈ 80 µ's 2 10 ≈ 300 µ''s ≈ 320 mT 10 ≈ 260 ≤ 200 kW/m 3 1 1 ≤ 200 ≈ 105 ≥ 260 ≈ 4600 Ωm °C kg/m3 Fig.1 25 oC 100 oC handbook, halfpage B (mT) 400 400 300 300 200 200 100 100 0 Fig.2 2008 Sep 01 100 300 T ( o C) 103 Complex permeability as a function of frequency. 500 4F1 µi 0 50 f (MHz) MBW295 MBW294 500 handbook, halfpage 102 10 0 100 500 Initial permeability as a function of temperature. 0 100 200 4F1 1000 2000 H (A/m) Fig.3 Typical B-H loops. 251 Ferroxcube Material specification 4F1 MBW296 800 25 oC o 100 C handbook, halfpage µa MBW297 10 3 handbook, halfpage 4F1 4F1 µ rev 600 10 2 400 10 200 1 0 0 100 200 300 400 Fig.4 Amplitude permeability as function of peak flux density. 10 3 H (A/m) 10 4 Reversible permeability as a function of magnetic field strength. MBW299 800 4F1 Pv (kW/m 3 ) Hz 3M Hz 10 MH z (kW/m 3) 2 handbook, halfpage 4F1 5M Pv Fig.5 MBW298 10 4 handbook, halfpage T = 100 oC 10 10 B (mT) f B (MHz) (mT) 600 10 3 10 7.5 5 10 10 5 3 10 400 10 2 200 10 1 10 10 2 B (mT) 0 10 3 0 Fig.7 Fig.6 Specific power loss as a function of peak flux density with frequency as a parameter. 2008 Sep 01 252 40 80 120 T (o C) Specific power loss for several frequency/flux density combinations as a function of temperature. Ferroxcube Material specification 4F1 DATA SHEET STATUS DEFINITIONS DATA SHEET STATUS PRODUCT STATUS DEFINITIONS Preliminary specification Development This data sheet contains preliminary data. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product specification Production This data sheet contains final specifications. Ferroxcube reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. DISCLAIMER Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube for any damages resulting from such application. PRODUCT STATUS DEFINITIONS STATUS INDICATION DEFINITION Prototype These are products that have been made as development samples for the purposes of technical evaluation only. The data for these types is provisional and is subject to change. Design-in These products are recommended for new designs. Preferred These products are recommended for use in current designs and are available via our sales channels. Support These products are not recommended for new designs and may not be available through all of our sales channels. Customers are advised to check for availability. 2008 Sep 01 253