FERROXCUBE DATA SHEET ER48/18/18 ER cores Supersedes data of September 2004 2008 Sep 01 Ferroxcube ER cores ER48/18/18 CORE SETS Effective core parameters SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 0.377 mm−1 Ve effective volume 20300 mm3 Ie effective length 87.0 mm Ae effective area 231 mm2 Amin minimum area 221 mm2 m mass of core half ≈ 51 g 11.45 ± 0.25 18 ± 0.2 48 1 36.8 ± 0.8 17.6 ± 0.4 17.6 ± 0.4 MFP067 R0.8 ± 0.5 (4×) Dimensions in mm. Fig.1 ER48/18/18 core half. Core halves Clamping force for AL measurements, 50 ± 20 N. GRADE 3C90 3C94 TOTAL AIR GAP (µm) AL (nH) µe 180 ± 5% ≈ 54 ≈ 2500 TYPE NUMBER ER48/18/18-3C90-E180 265 ± 5% ≈ 77 ≈ 1500 ER48/18/18-3C90-E265 309 ± 5% ≈ 93 ≈ 1250 ER48/18/18-3C90-E309 370 ± 5% ≈ 111 ≈ 1000 ER48/18/18-3C90-E370 465 ± 5% ≈ 140 ≈ 750 ER48/18/18-3C90-E465 6400 ± 25% ≈ 1920 ≈0 ER48/18/18-3C90 6400 ± 25% ≈ 1920 ≈0 ER48/18/18-3C94 Properties of core sets under power conditions B (mT) at CORE LOSS (W) at H = 250 A/m; f = 25 kHz; T = 100 °C f = 25 kHz; ˆ = 200 mT; B T = 100 °C f = 100 kHz; ˆ = 100 mT; B T = 100 °C 3C90 ≥330 ≤ 2.4 ≤ 2.5 − 3C94 ≥330 − ≤ 2.1 ≤ 12 GRADE 2008 Sep 01 794 f = 100 kHz; ˆ = 200 mT; B T = 100 °C Ferroxcube ER cores ER48/18/18 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 01 795