EFD25

www.DataSheet4U.com MAGNETIC PRODUCTS DATA SHEET EFD25 EFD cores and accessories Product specification File under Magnetic Products, MA01 1997 Nov 21 www.DataSheet4U.com Philips Components Product specification EFD cores and accessories CORES 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 1.00 3300 57.0 58.0 55 ≈8 UNIT mm−1 mm3 mm mm2 mm2 g 25 0.65 18.7 0.6 11.4 0.2 9.1 0.6 0.2 MGC342 EFD25 handbook, halfpage 12.5 0.15 9.3 0.25 5.2 0.15 Dimensions in mm. Fig.1 EFD25 core half. Core halves Gapped cores are available on request. Clamping force 40 ±20 N. GRADE 3C30 3C85 3C90 3F3 3F4 AL (nH) 1800 ±25% 2200 ±25% 2200 ±25% 2000 ±25% 1000 ±25% µe ≈1450 ≈1780 ≈1780 ≈1600 ≈800 AIR GAP (µm) ≈0 ≈0 ≈0 ≈0 ≈0 TYPE NUMBER EFD25-3C30 EFD25-3C85 EFD25-3C90 EFD25-3F3 EFD25-3F4 Properties of core sets under power conditions B (mT) at GRADE H = 250 A/m; f = 25 kHz; T = 100 °C ≥360 ≥320 ≥330 ≥315 ≥300 f = 25 kHz; ˆ = 200 mT; B T = 100 °C ≤0.35 ≤0.50 ≤0.35 − − f = 100 kHz; ˆ = 100 mT; B T = 100 °C ≤0.38 ≤0.60 ≤0.38 ≤0.38 − CORE LOSS (W) at f = 400 kHz; ˆ = 50 mT; B T = 100 °C − − − ≤0.66 − f = 1 MHz; ˆ = 30 mT; B T = 100 °C − − − − ≤0.70 f = 3 MHz; ˆ = 10 mT; B T = 100 °C − − − − ≤1.10 3C30 3C85 3C90 3F3 3F4 1997 Nov 21 2 www.DataSheet4U.com Philips Components Product specification EFD cores and accessories COIL FORMERS General data PARAMETER Coil former mat...