Ferrites and accessories E 65/32/27 Core and accessories Series/Type: B66387, B66388 Date: June 2013 Data SheetData Sheet EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS prior express consent is prohibited. EPCOS AG is a TDK Group Company. 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.