FERROXCUBE DATA SHEET 3F4 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 3F4 3F4 SPECIFICATIONS A high frequency power material for use in power and general purpose transformers at frequencies of 1 - 2 MHz. SYMBOL CONDITIONS VALUE µi 25 °C; ≤10 kHz; 0.25 mT 900 ±20% µa 100 °C; 25 kHz; 200 mT ≈ 1700 B 25 °C; 10 kHz; 1200 A/m ≈ 410 100 °C; 10 kHz; 1200 A/m ≈ 350 100 °C; 1 MHz; 30 mT ≈ 130 100 °C; 3 MHz; 10 mT ≈ 220 PV ρ DC; 25 °C MBW025 10 4 handbook, halfpage 3F4 µ's , µ''s UNIT 10 3 µ's µ''s mT 10 2 kW/m 3 ≈ 10 Ωm TC ≥ 220 °C density ≈ 4700 kg/m3 10 10 1 Fig.1 MBW034 2000 handbook, halfpage 10 10 2 f (MHz) Complex permeability as a function of frequency. MBW017 500 25oC 100oC handbook, halfpage 3F4 µi 1 B (mT) 3F4 400 1500 300 1000 200 500 100 0 50 0 50 Fig.2 2008 Sep 01 150 T ( o C) 250 50 0 50 100 500 1000 H (A/m) Initial permeability as a function of temperature. Fig.3 Typical B-H loops. 185 Ferroxcube Material specification 3F4 MBW046 2000 25 C o 100 C µa MBW035 10 4 handbook, halfpage o handbook, halfpage 3F4 3F4 µ rev 1500 10 3 1000 10 2 500 10 0 0 100 200 300 400 10 2 10 1 B (mT) Fig.4 Amplitude permeability as function of peak flux density. Fig.5 MBW047 10 4 handbook, halfpage T = 100 oC 3F4 Pv (kW/m 3 ) f B (kHz) (mT) 300 25 k Hz 10 3 MBW056 400 1 MH z 400 k Hz 200 1 0 0 kHz kHz 3M Hz 2M Hz (kW/m 3) Reversible permeability as a function of magnetic field strength. handbook, halfpage 3F4 Pv 3 H (A/m) 10 200 10 2 3000 10 500 50 1000 30 1000 25 100 10 1 10 10 2 B (mT) 10 0 3 0 Fig.7 Fig.6 Specific power loss as a function of peak flux density with frequency as a parameter. 2008 Sep 01 186 40 80 120 T (o C) Specific power loss for several frequency/flux density combinations as a function of temperature. Ferroxcube Material specification 3F4 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 01 187