FERROXCUBE DATA SHEET 4A11 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 4A11 4A11 SPECIFICATIONS Medium permeability NiZn ferrite for use in wideband EMI-suppression (30 - 1000 MHz) as well as RF wideband and balun transformers. SYMBOL µi CONDITIONS 25 °C; ≤10 kHz; 0.25 mT 25 °C; 10 kHz; 1200 A/m 100 °C; 10 kHz; 1200 A/m 25 °C; 1 MHz; 0.25 mT 25 °C; 3 MHz; 0.25 mT DC; 25 °C B tanδ/µi ρ TC density VALUE MBW309 10 4 4A11 µ's , µ''s UNIT 850 ±20% µ's 10 3 ≈ 340 mT µ''s ≈ 230 10 2 ≤ 100 × 10−6 ≤ 1000 × 10−6 ≈ ≥ 125 ≈ 5100 10 10 1 Ωm °C kg/m 3 105 1 Fig.1 10 Complex permeability as a function of frequency. 500 25 oC 100 oC handbook, halfpage B (mT) 4A11 µi f (MHz) MBW311 MBW310 2000 10 4A11 400 1500 300 1000 200 500 100 0 0 50 50 Fig.2 2008 Sep 01 150 T ( o C) 50 250 Initial permeability as a function of temperature. 0 50 100 500 1000 H (A/m) Fig.3 Typical B-H loops. 220 2 Ferroxcube Material specification 4A11 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 01 221