3E28

FERROXCUBE DATA SHEET 3E28 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 3E28 SPECIFICATIONS A medium permeability material optimized for use in wideband LAN transformers with a high DC-bias current over a wide temperature range. SYMBOL µi B CONDITIONS 25 °C; ≤10 kHz; 0.25 mT 25 °C; 10 kHz; 1200 A/m 100 °C; 10 kHz; 1200 A/m tanδ/µi ρ TC density 25 °C; 100 kHz; 0.25 mT DC; 25 °C VALUE 4000 ± 20% ≈ 440 ≈ 280 ≤ 5 × 10−6 ≈1 ≥ 145 ≈ 4 800 Ωm °C kg/m3 10 10 2 2 3E28 10 5 handbook, halfpage µ's , µ'' s 10 4 µs ' CBW445 3E28 UNIT mT 10 3 µ'' s 10 1 1 f (MHz) 10 Fig.1 Complex permeability as a function of frequency. handbook, halfpage 10000 µi CBW448 3E28 handbook, halfpage 500 CBW446 B (mT) 400 25oC 100oC 3E28 8000 6000 300 4000 200 2000 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 01 149 Ferroxcube Material specification 3E28 10 4 handbook, halfpage µ rev 10 3 CBW444 3E28 10 2 10 1 10 10 2 3 H (A/m) 10 Fig.4 Reversible permeability as a function of magnetic field strength. 2008 Sep 01 150 Ferroxcube Material specification DATA SHEET STATUS DEFINITIONS DATA SHEET STATUS Preliminary specification Product specification PRODUCT STATUS Development DEFINITIONS 3E28 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 01 151