FERROXCUBE DATA SHEET 3C91 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 3C91 3C91 SPECIFICATIONS A medium frequency power material with minimum power losses around 60 °C for use in power and general purpose transformers at frequencies up to 0.3 MHz. SYMBOL µi µa B PV ρ TC density CONDITIONS VALUE 25 °C; ≤10 kHz; 0.25 mT 100 °C; 25 kHz; 200 mT 25 °C; 10 kHz; 1200 A/m 100 °C; 10 kHz; 1200 A/m 60 °C; 100 kHz; 100 mT 60 °C; 100 kHz; 200 mT DC, 25 °C 3000 ±20% µ's , µ''s UNIT 3C91 µ's 10 3 µ''s 5500 ±25% ≈ 470 mT ≈ 370 mT ≤ 40 kW/m 3 10 2 10 10 1 1 10 f (MHz) 10 2 ≈ 300 ≈5 ≥ 220 ≈ 4800 Ωm °C kg/m3 Fig.1 CBW469 10000 handbook, halfpage Complex permeability as a function of frequency. CBW437 500 25 oC 100 oC handbook, halfpage 3C91 B (mT) µi 8000 400 6000 300 4000 200 2000 100 3C91 0 0 50 50 Fig.2 2008 Sep 01 CBW574 10 4 handbook, halfpage 150 T ( o C) 25 250 0 25 50 150 250 H (A/m) Initial permeability as a function of temperature. Fig.3 Typical B-H loops. 109 Ferroxcube Material specification 3C91 CBW441 8000 25 oC o 100 C handbook, halfpage µa CBW578 10 4 handbook, halfpage 3C91 3C91 µ rev 6000 10 3 4000 10 2 2000 10 0 0 100 200 300 400 Fig.4 Amplitude permeability as a function of peak flux density. 10 2 10 1 B (mT) Fig.5 3 H (A/m) 10 Reversible permeability as a function of magnetic field strength. CBW436 10 4 handbook, halfpage T = 100 oC CBW471 800 handbook, halfpage 3C91 Pv (kW/m 3 ) 200 kHz kHz Pv f B (kHz) (mT) 600 10 0 (kW/m 3) 3C91 100 200 200 100 25 100 200 100 25 kHz 10 3 400 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 01 110 40 80 T (o C) 120 Specific power loss for several frequency/flux density combinations as a function of temperature. Ferroxcube Material specification 3C91 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 01 111