Ferrites and accessories E 65/32/27 Core and accessories Series/Type: B66387, B66388 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.E 65/32/27 Core B66387 Delivery mode: single units Magnetic characteristics (per set) 1 l/A = 0.27 mm l = 147 mm e 2 A = 535 mm e 2 A = 529 mm min 3 V = 78650 mm e Approx. weight 394 g/set Ungapped Mate- A value B * P Ordering code L e S V rial nH mT W/set N27 7200 +30/20% 1570 320 < 14.6 (200 mT, 25 kHz, 100 C) B66387G0000X127 N87 7900 +30/20% 1700 320 < 6.7 (100 mT, 100 kHz, 100 C) B66387G0000X187 * H = 250 A/m f = 10 kHz T = 100 C Gapped Material g A value Ordering code L e approx. ** = 27 (N27) mm nH ** = 87 (N87) N27, 0.500.05 1214 265 B66387G0500X1** N87 1.000.05 716 156 B66387G1000X1** 1.500.05 526 115 B66387G1500X1** 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 716 0.762 1231 0.847 1154 0.865 N87 716 0.762 1168 0.796 1131 0.873 Validity range: K1, K2: 0.20 mm < s < 5.00 mm K3, K4: 230 nH < A < 2290 nH L Please read Cautions and warnings and 2 06/13 Important notes at the end of this document.