Ferrites and accessories ETD 49/25/16 Core and accessories Series/Type: Date: B66367, B66368 September 2006 Data Sheet EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the information contained therein without EPCOS’ prior express consent is prohibited.
ETD 49/25/16 Core B66367 24,9 _ 0,4 17,7+0,8 g ■ To IEC 61185 ■ For SMPS transformers with optimum weight/performance ratio at small volume ■ Delivery mode: single units Magnetic characteristics (per set) = 0.54 mm–1 = 114 mm = 211 mm2 = 209 mm2 = 24100 mm3 16,7 _ 0,8 16,7 _ 0,8 Σ l/A le Ae Amin Ve Approx. weight 124 g/set 36,1+1,8 _ 0,9 48,5 +1,3 FEK0061-Y Ungapped Material AL value nH µe PV W/set Ordering code N27 3700 +30/–20% 1590 < 4.
ETD 49/25/16 Core B66367 Calculation factors (for formulas, see “E cores: general information”) Material Relationship between air gap – AL value Calculation of saturation current K1 (25 °C) K2 (25 °C) K3 (25 °C) K4 (25 °C) K3 (100 °C) K4 (100 °C) N27 314 – 0.741 504 – 0.847 470 – 0.865 N87 314 – 0.741 485 – 0.796 460 – 0.873 Validity range: K1, K2: 0.10 mm < s < 3.50 mm K3, K4: 120 nH < AL < 1160 nH Please read Cautions and warnings and Important notes at the end of this document.
ETD 49/25/16 Accessories B66368 Coil former Material: GFR polyterephthalate, UL 94 V-0, insulation class to IEC 60085: B66368B: F max. operating temperature 155 °C, color code black Valox 420-SE0 ® [E45329 (M)], GE PLASTICS B V B66368W: H max. operating temperature 180 °C, color code black Rynite FR 530 ® [E41938 (M)], E I DUPONT DE NEMOURS & CO INC Solderability: to IEC 60068-2-20, test Ta, method 1 (aging 3): 235 °C, 2 s Resistance to soldering heat: to IEC 60068-2-20, test Tb, method 1B: 350 °C, 3.
Ferrites and accessories Cautions and warnings Mechanical stress and mounting Ferrite cores have to meet mechanical requirements during assembling and for a growing number of applications. Since ferrites are ceramic materials one has to be aware of the special behavior under mechanical load. As valid for any ceramic material, ferrite cores are brittle and sensitive to any shock, fast changing or tensile load.
Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned.
