B66381G0000X172 TDK

Ferrites and accessories E 40/16/12 Core Series/Type: B66381 Date: May 2017 EPCOS AG 2017. 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 40/16/12 Core B66381 Size based on US lam. size E cores US designation E 21 Delivery mode: single units Magnetic characteristics (per set) 1 l/A= 0.52 mm l = 77 mm e 2 A = 149 mm e 2 A = 143 mm min 3 V = 11500 mm e Approx. weight 58 g/set Ungapped Material A value P Ordering code L e V nH W/set N27 3800 +30/20% 1560 < 2.15 (200 mT, 25 kHz, 100 C) B66381G0000X127 N87 4150 +30/20% 1710 < 5.80 (200 mT, 100 kHz, 100 C) B66381G0000X187 N72 4600 +30/20% 1900 < 1.12 (200 mT, 25 kHz, 100 C) B66381G0000X172 Gapped (A values/air gaps examples) L Material g A value Ordering code L e approx. mm nH N27 0.50 0.05 411 166 B66381G0500X127 The A value in the table applies to a core set comprising one ungapped core (dimension g = 0 mm) L and one gapped core (dimension g > 0 mm). Other A values/air gaps and materials available on request see Processing remarks on page 3. L 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 239 0.782 378 0.847 351 0.865 Validity range: K1, K2: 0.10 mm < s < 2.50 mm K3, K4: 130 nH < A < 1200 nH L Please read Cautions and warnings and 2 5/17 Important notes at the end of this document.