EC70

www.DataSheet4U.com FERROXCUBE DATA SHEET EC70 EC cores and accessories Supersedes data of February 2002 2004 Sep 01 Ferroxcube EC cores and accessories CORE SETS Effective core parameters SYMBOL Σ(I/A) Ve Ie Ae Amin m PARAMETER core factor (C1) effective volume effective length effective area minimum area mass of core half VALUE 0.514 40100 144 279 211 ≈ 127 UNIT mm−1 mm3 mm mm2 mm2 g 16.4 0.4 MGC407 EC70 handbook, halfpage 22.75 0.45 34.5 0.15 71.7 max 44.5 1.2 16.4 0.4 Dimensions in mm. Fig.1 EC70 core half. Core halves AL measured in combination with an non-gapped core half, unless stated otherwise. GRADE 3C81 AL (nH) 250 ± 3%(1) 315 ± 3%(1) 400 ± 3%(1) 630 ± 5% 1000 ± 10% ≥ 4000 3C90 250 ± 315 ± 3%(1) 3%(1) µe ≈ 102 ≈ 130 ≈ 165 ≈ 256 ≈ 406 ≥ 1620 ≈ 102 ≈ 130 ≈ 165 ≈ 256 ≈ 406 ≈ 1580 AIR GAP (µm) ≈ 1830 ≈ 1370 ≈ 1020 ≈ 580 ≈ 320 ≈0 ≈ 1830 ≈ 1370 ≈ 1020 ≈ 580 ≈ 320 ≈0 TYPE NUMBER EC70-3C81-E250 EC70-3C81-E315 EC70-3C81-E400 EC70-3C81-A630 EC70-3C81-A1000 EC70-3C81 EC70-3C90-E250 EC70-3C90-E315 EC70-3C90-E400 EC70-3C90-A630 EC70-3C90-A1000 EC70-3C90 400 ± 3%(1) 630 ± 5% 1000 ± 10% 3900 ± 25% Note 1. Measured in combination with an equal gapped core half (symmetrical air gap). Properties of core sets under power conditions B (mT) at GRADE H = 250 A/m; f = 25 kHz; T = 100 °C ≥330 ≥330 2 f = 25 kHz; ˆ = 200 mT; B T = 100 °C ≤ 8.2 ≤ 4.9 CORE LOSS (W) at f = 100 kHz; ˆ = 100 mT; B T = 100 °C − ≤ 5.1 3C81 3C90 2004 Sep 01 Ferroxcube EC cores and accessories COIL ...