EC70 Datasheet PDF

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.