EFD 15/8/5 Core B66413 E core with flattened, lower center leg for especially flat transformer design For DC/DC converters EFD cores are supplied as single units Magnetic characteristics (per set) l/A le Ae Amin Ve = 2,27 mm-1 = 34 mm = 15 mm2 = 12,2 mm2 = 510 mm3 Approx. weight 2,8 g/set Ungapped Material AL value e N49 nH 600 + 30/- 20 % nH 1080 330 N87 780 + 30/- 20 % 1400 560 Material AL value e N87 nH 100 10 % 160 15 % 180 288 AL1min PV Ordering code W/set 0,11 B66413-G-X149 (50 mT, 500 kHz, 100 C) 0,28 B66413-G-X187 (200 mT, 100 kHz, 100 C) Gapped g approx. mm 0,17 0,08 Ordering code B66413-U100-K187 B66413-U160-L187 The AL value in the table applies to a core set comprising one ungapped core (dimension g = 0) and one gapped core (dimension g > 0). Calculation factors (see page 423 for formulas) Material N87 Validity range: Relationship between air gap - AL value K1 (25 C) K2 (25 C) 29,7 - 0,676 Calculation of saturation current K3 (25 C) 44,2 K4 (25 C) - 0,796 K3 (100 C) K4 (100 C) 33,2 - 0,873 K1, K2: 0,10 mm < s < 1,00 mm K3, K4: 30 nH < AL < 280 nH Siemens Matsushita Components 549 EFD 15/8/5 Accessories B66414 Coil former Material: GFR thermosetting plastic (UL 94 V-0, insulation class to IEC 60085: F max.operating temperature 155 C), color code green 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, 3,5 s Winding: see page 156 Squared pins Yoke Material: Stainless spring steel (0,25 mm) Coil former Ordering code Sections AN mm2 lN mm AR value Pins 1 15,8 29 63,1 8 B66414-B1008-D1 Yoke (ordering code per piece, 2 are required) B66414-B2000 Coil former Yoke 150,2 6,95 _ 0,1 2 3 Mounting holes Montagelochung 4 8 8 7 6 5 o1+0,1 13,75 16,50,2 1 1 5 4 3,75 11,25 Duroplast Marking offur pinStift 11 Markierung 3,50,2 550 1,6 _ 0,15 8,85 min. 4 _ 0,1 2,55+0,15 10,4 _ 0,15 7,5 _ 0,2 1,7 8,15 max. 10,55 _ 0,15 5,55+0,15 0,45 CuSn6, verzinnt CuSn6, tinned FEK0357-P Siemens Matsushita Components EFD 15/8/5 Accessories B66414 SMD coil former with J terminals Material: GFR liquid crystal polymer (UL 94 V-0, insulation class to IEC 60085: F max. operating temperature 155 C), color code black 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, 3,5 s permissible soldering temperature for wire-wrap connection on coil former: 400 C, 1 s Winding: see page 160 Yoke Material: Stainless spring steel (0,25 mm) Cover plate For marking and improved processing on assembly machines See under coil former for material and resistance to soldering heat Sections AN mm2 lN mm AR value Terminals Ordering code 1 20,4 36 60 8 B66414-B6008-T1 2 19,5 36 64 8 B66414-B6008-T2 Yoke (ordering code per piece, 2 are required) B66414-B2000 Cover plate B66414-A7000 Coil former Yoke 7,60,15 3,45 _ 0,2 0,50,05 16 _ 0,2 Cover plate 5 11,25 6 4 3,75 7 3 11,25 8 2 0,550,05 1 1,2 Recommended Empfehlung fur das PCB layout Leiterplattenlayout 3,75 0,60,05 20,8 _ 0,3 6,4 _ 0,2 7,3 _ 0,1 10,6 _ 0,2 5,5+0,2 0,50,05 2,6+0,15 15 _ 0,25 10,4 _ 0,2 2,5 Center flange omitted for one-section version 17,7 FEK0329-J Siemens Matsushita Components 551