FERROXCUBE DATA SHEET E55/28/25 E cores and accessories Supersedes data of September 2004 2008 Sep 01 Ferroxcube E cores and accessories E55/28/25 CORE SETS Effective core parameters SYMBOL PARAMETER VALUE UNIT Σ(I/A) core factor (C1) 0.239 mm−1 Ve effective volume 52000 mm3 Ie effective length 123 mm Ae effective area 420 mm2 Amin minimum area 411 mm2 m mass of core half ≈130 g 56.2 0 −2.1 37.5 +1.5 0 andbook, halfpage 17.2 0 −0.5 R < 0.6 18.5 +0.8 0 27.5 ±0.3 R3 25 0 −0.8 CBW069 Dimensions in mm. Fig.1 E55/28/25 core half. Core halves AL measured in combination with a non-gapped core half, clamping force for AL measurements 60 ±20 N, unless stated otherwise. TOTAL AIR GAP (µm) AL (nH) µe 100 ±5%(1) ≈ 23 ≈ 10440 E55/28/25-3C90-E100 160 ±5%(1) ≈ 37 ≈ 5520 E55/28/25-3C90-E160 250 ±5%(1) ≈ 58 ≈ 3040 E55/28/25-3C90-E250 315 ±5%(1) ≈ 73 ≈ 2240 E55/28/25-3C90-E315 400 ±8%(1) ≈ 93 ≈ 1660 E55/28/25-3C90-E400 ≈ 147 ≈ 940 E55/28/25-3C90-E630 8000 ±25% ≈ 1860 ≈0 E55/28/25-3C90 3C92 5800 ±25% ≈ 1100 ≈0 E55/28/25-3C92 3C94 8000 ±25% ≈ 1860 ≈0 E55/28/25-3C94 3C95 9860 ±25% E55/28/25-3C95 GRADE 3C90 630 3F3 ±10%(1) ≈ 2300 ≈0 ±5%(1) ≈ 23 ≈ 10440 E55/28/25-3F3-E100 160 ±5%(1) ≈ 37 ≈ 5520 E55/28/25-3F3-E160 250 ±5%(1) ≈ 58 ≈ 3040 E55/28/25-3F3-E250 315 ±5%(1) ≈ 73 ≈ 2240 E55/28/25-3F3-E315 400 ±8%(1) ≈ 93 ≈ 1660 E55/28/25-3F3-E400 ≈ 147 ≈ 940 E55/28/25-3F3-E630 ≈ 1730 ≈0 100 630 ±10%(1) 7400 ±25% Note 1. Measured in combination with an equal gapped core half. 2008 Sep 01 TYPE NUMBER 2 E55/28/25-3F3 Ferroxcube E cores and accessories E55/28/25 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 ≤ 5.7 ≤ 7.3 3C92 ≥370 − ≤ 4.8 3C94 ≥330 − 3C95 ≥330 3F3 ≥310 GRADE 2008 Sep 01 f = 100 kHz; ˆ = 200 mT; B T = 100 °C f = 400 kHz; ˆ = 50 mT; B T = 100 °C − − − − ≤ 31 − ≤ 4.8 − ≤ 31 − − − ≤ 32.8 ≤ 31.2 − − ≤ 6.6 − − ≤ 12.7 3 f = 100 kHz; ˆ = 200 mT; B T = 25 °C Ferroxcube E cores and accessories E55/28/25 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