3C81

FERROXCUBE DATA SHEET 3C81 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 3C81 SPECIFICATIONS A low frequency power material with minimum power losses around 60 °C for use in power and general purpose transformers at frequencies up to 0.2 MHz. SYMBOL µi µa B CONDITIONS 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 100 °C; 25 kHz; 200 mT DC; 25 °C VALUE 2700 ±20% 5500 ±20% ≈ 450 ≈ 360 ≤ 185 ≈1 ≥ 210 ≈ 4 800 kW/m 3 Ωm °C kg/m3 10 10 1 1 10 f (MHz) 3C81 10 4 handbook, halfpage µ's , µ'' s 10 3 µs ' MBW023 3C81 UNIT µ'' s mT 10 2 PV ρ TC density 10 2 Fig.1 Complex permeability as a function of frequency. handbook, halfpage 5000 µi 4000 MBW032 3C81 handbook, halfpage 500 MBW016 B (mT) 400 25oC 100oC 3C81 3000 300 2000 200 1000 100 0 50 0 50 150 T ( o C) 250 25 0 25 50 150 H (A/m) 250 Fig.2 Initial permeability as a function of temperature. Fig.3 Typical B-H loops. 2008 Sep 01 101 Ferroxcube Material specification 3C81 handbook, halfpage 8000 µa 6000 MBW044 25 C o 100 C o 3C81 10 4 handbook, halfpage MBW039 3C81 µ rev 10 3 4000 10 2 2000 0 0 100 200 300 B (mT) 400 10 1 10 10 2 H (A/m) 10 3 Fig.4 Amplitude permeability as a function of peak flux density. Fig.5 Reversible permeability as a function of magnetic field strength. 10 4 handbook, halfpage T = 100 oC Pv (kW/m 3) 10 3 MBW051 3C81 200 kH z 100 kH 50 kHz z 25 kHz handbook, halfpage 800 MBW053 3C81 f B (kHz) (mT) 200 100 Pv (kW/m 3 ) 600 400 10 2 200 100 25 100 200 10 1 10 10 2 B (mT) 10 3 0 0 40 80 120 T (o C) Fig.7 Fig.6 Specific power loss as a function of peak flux density with frequency as a parameter. Specific power loss for several frequency/flux density combinations as a function of temperature. 2008 Sep 01 102 Ferroxcube Material specification DATA SHEET STATUS DEFINITIONS DATA SHEET STATUS Preliminary specification Product specification PRODUCT STATUS Development DEFINITIONS 3C81 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. 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. Production 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 Prototype Design-in Preferred Support INDICATION DEFINITION 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. These products are recommended for new designs. These products are recommended for use in current designs and are available via our sales channels. 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 01 103