B66395

www.DataSheet4U.com ETD 54/28/19 Core I In accordance with IEC 61185 I For SMPS transformers with optimum B66395 weight/performance ratio at small volume I ETD cores are supplied as single units Magnetic characteristics (per set) 19,3 _ 0,8 Σl/A le Ae A min Ve = 0,45 mm–1 = 127 mm = 280 mm2 = 280 mm2 = 35 600 mm3 27,8 _ 0,4 19,8+0,8 19,3 _ 0,8 Approx. weight 180 g/set 40,1+2,2 54,5±1,3 FEK0065-W Ungapped Material N27 N87 N97 1) AL value nH µe A L1min P V nH W/set Ordering code 4200 + 30/– 20 % 1510 3470 4450 + 30/– 20 % 1600 3470 4600 + 30/– 20 % 1650 3470 B66395-G-X127 < 6,66 (200 mT, 25 kHz, 100 °C) < 21,00 B66395-G-X187 (200 mT, 100 kHz, 100 °C) < 18,00 B66395-G-X197 (200 mT, 100 kHz, 100 °C) Gapped Material g mm N27, N87 0,20 ± 0,02 1,00 ± 0,05 1,50 ± 0,05 2,00 ± 0,05 A L value approx. nH 1377 393 287 229 µe Ordering code ** = 27 (N27) ** = 87 (N87) B66395-G200-X1** B66395-G1000-X1** B66395-G1500-X1** B66395-G2000-X1** 496 141 103 82 The A L value in the table applies to a core set comprising one ungapped core (dimension g = 0) and one gapped core (dimension g > 0). 1) Preliminary data 494 08/01 ETD 54/28/19 Core Calculation factors (for formulas, see “ E cores: general information”, page 382) Material Relationship between air gap – A L value K1 (25 °C) N27 N87 Validity range: 393 393 K2 (25 °C) – 0,779 – 0,779 Calculation of saturation current K3 (25 °C) 658 630 K4 (25 °C) – 0,847 – 0,796 K3 (100 °C) K4 (100 °C) 615 603 – 0,865 – 0,873 B66395 K1...