Ferrites and accessories ETD 29/16/10 Core and accessories Series/Type: B66358, B66359 Date: June 2013 Data SheetData Sheet EPCOS AG 2013. Reproduction, publication and dissemination of this data sheet and the information contained therein without EPCOS prior express consent is prohibited.ETD 29/16/10 Core B66358 ETD 29/16/10 through ETD 59/31/22 To IEC 61185 For SMPS transformers with optimum weight/performance ratio at small volume Delivery mode: single units Magnetic characteristics (per set) 1 l/A = 0.93 mm l = 70.4 mm e 2 A = 76.0 mm e 2 A = 71.0 mm min 3 V = 5350 mm e Approx. weight 28 g/set Ungapped Material A value P Ordering code L e V nH W/set N27 2000 +30/20% 1470 < 1.04 (200 mT, 25 kHz, 100 C) B66358G0000X127 N87 2200 +30/20% 1610 < 2.80 (200 mT, 100 kHz, 100 C) B66358G0000X187 N97 2250 +30/20% 1670 < 2.40 (200 mT, 100 kHz, 100 C) B66358G0000X197 Gapped Material g A value Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.100.02 621 457 B66358G0100X1** N87 0.200.02 383 281 B66358G0200X1** 0.500.05 201 148 B66358G0500X1** 1.00 0.05 124 91 B66358G1000X1** The A value in the table applies to a core set comprising one ungapped core (dimension g = 0) and L one gapped core (dimension g > 0). Calculation factors (for formulas, see E cores: general information ) Material Relationship between Calculation of saturation current air gap A value L K1 (25 C) K2 (25 C) K3 (25 C) K4 (25 C) K3 (100 C) K4 (100 C) N27 124 0.7 195 0.847 181 0.865 N87 124 0.7 192 0.796 176 0.873 Validity range: K1, K2: 0.10 mm < s < 2.00 mm K3, K4: 70 nH < A < 680 nH L Please read Cautions and warnings and 2 06/13 Important notes at the end of this document.