FERROXCUBE DATA SHEET EQ25 EQ cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube EQ cores and accessories EQ25 CORES Effective core parameters of a set of EQ cores SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 0.414 mm −1 Ve effective volume 4145 mm 3 Ie effective length 41.4 mm Ae effective area 100 mm 2 Amin minimum area 95.0 mm 2 m mass of core half ≈ 11 g 5.15 halfpage handbook, 8.0 ± 0.1 ± 0.15 25 ± 0.4 22 ± 0.4 15.2 ± 0.7 11 ± 0.2 18 ± 0.3 MFP003 Dimensions in mm. Fig.1 EQ25 core. Core halves for general purpose transformers and power applications Clamping force for AL measurements, 40 ± 20 N. GRADE AL (nH) AIR GAP (µm) µe TYPE NUMBER 3C94 4800 ± 25 % ≈ 1580 ≈0 EQ25-3C94 3C95 5710 ± 25 % ≈ 1880 ≈0 EQ25-3C95 3C96 4400 ± 25 % ≈ 1450 ≈0 EQ25-3C96 3F35 3350 ± 25 % ≈ 1100 ≈0 EQ25-3F35 3F4 2300 ± 25 % ≈ 758 ≈0 EQ25-3F4 3F45 2300 ± 25 % ≈ 758 ≈0 EQ25-3F45 2008 Sep 01 2 Ferroxcube EQ cores and accessories EQ25 Properties of core sets under power conditions B (mT) at CORE COMBINATION CORE LOSS (W) at H = 250 A/m; f = 10 kHz; T = 100 °C f = 100 kHz; ˆ = 100 mT; B T = 100 °C f = 100 kHz; ˆ = 200 mT; B T = 25 °C f = 100 kHz; ˆ = 200 mT; B T = 100 °C f = 500 kHz; ˆ = 50 mT; B T = 100 °C EQ+EQ25-3C94 ≥ 320 ≤ 0.37 − ≤ 2.5 − EQ+EQ25-3C95 ≥ 320 − ≤ 2.45 ≤ 2.32 − EQ+EQ25-3C96 ≥ 340 ≤ 0.28 − ≤ 1.9 ≤ 1.5 EQ+EQ25-3F35 ≥ 300 − − − ≤ 0.56 Properties of core sets under power conditions (continued) B (mT) at CORE COMBINATION CORE LOSS (W) at f = 1 MHz; B̂ = 30 mT; T = 100 °C f = 1 MHz; B̂ = 50 mT; T = 100 °C f = 3 MHz; ˆ = 10 mT; B T = 100 °C H = 250 A/m; f = 10 kHz; T = 100 °C f = 500 kHz; ˆ = 100 mT; B T = 100 °C EQ+EQ25-3F35 ≥ 300 ≤ 4.3 − − − EQ+EQ25-3F4 ≥ 300 − ≤ 1.25 − ≤ 2.0 EQ+EQ25-3F45 ≥ 300 − ≤ 0.95 ≤ 3.5 ≤ 1.6 2008 Sep 01 3 Ferroxcube EQ cores and accessories EQ25 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 4