FERROXCUBE DATA SHEET 4C65 Material specification Supersedes data of September 2004 2008 Sep 01 Ferroxcube Material specification 4C65 4C65 SPECIFICATIONS Low permeability NiZn ferrite for use in RF tuning, wideband and balun transformers. SYMBOL µi B tanδ/µi ρ TC density CONDITIONS 25 °C; ≤10 kHz; 0.25 mT 25 °C; 10 kHz; 3000 A/m 100 °C; 10 kHz; 3000 A/m 25 °C; 3 MHz; 0.25 mT 25 °C; 10 MHz; 0.25 mT DC; 25 °C VALUE UNIT µ's , µ''s 125 ±20% 4C65 µ's 2 10 ≈ 380 MBW074 10 3 handbook, halfpage mT ≈ 340 µ''s 10 ≤ 80 × 10 −6 ≤ 130 × 10−6 ≈ 105 ≥ 350 ≈ 4 500 1 Ωm °C kg/m3 1 Fig.1 MBW076 500 B (mT) 400 400 300 300 200 200 100 100 0 50 0 100 Fig.2 2008 Sep 01 300 T ( o C) 0 200 500 Initial permeability as a function of temperature. 0 200 400 4C65 2000 4000 H (A/m) Fig.3 Typical B-H loops. 238 103 MBW075 25oC 100oC handbook, halfpage µi f (MHz) Complex permeability as a function of frequency. 500 4C65 handbook, halfpage 102 10 Ferroxcube Material specification 4C65 MBW091 10 3 handbook, halfpage MBW080 200 4C65 handbook, halfpage µp f = 10 kHz T=25 oC 4C65 µ rev 150 10 2 0.1 µs 0.2 µs 100 2 µs 0.5 µs 1 µs 10 50 1 10 10 2 10 3 0 4 H (A/m) 10 0 50 100 150 200 B (mT) Fig.4 2008 Sep 01 Reversible permeability as a function of magnetic field strength. Fig.5 Pulse characteristics (unipolar pulses). 239 Ferroxcube Material specification 4C65 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 01 240