450 siemens matsushita components l in accordance with iec 61246 l e cores are supplied as single units magnetic characteristics (per set) s l/a = 1,1 mm C1 l e = 57,5 mm a e = 52,5 mm 2 a min = 51,5 mm 2 v e = 3 020 mm 3 approx. weight 16 g/set ungapped gapped the a l 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) validity range: k1 , k2 : 0,10 mm < s < 2,00 mm k3 , k4 : 60 nh < a l < 570 nh material a l value nh m e a l1min nh p v w/set ordering code n30 2900 + 30/C 20 % 2530 b66317-g-x130 n27 1750 + 30/C 20 % 1520 1440 0,59 (200 mt, 25 khz, 100 ?c) b66317-g-x127 n67 1800 + 30/C 20 % 1570 1440 2,00 (200 mt, 100 khz, 100 ?c) b66317-g-x167 material g mm a l value approx. nh m e ordering code ** = 27 (n27) = 67 (n67) n27, 0,10 0,02 489 425 b66317-g100-x1** n67 0,16 0,02 347 302 b66317-g160-x1** 0,25 0,02 250 218 b66317-g250-x1** 0,50 0,05 151 131 b66317-g500-x1** 1,00 0,05 91 79 b66317-g1000-x1** material relationship between air gap C a l value calculation of saturation current k1 (25 ?c) k2 (25 ?c) k3 (25 ?c) k4 (25 ?c) k3 (100 ?c) k4 (100 ?c) n27 90 C 0,731 139 C 0,847 129 C 0,865 n67 90 C 0,731 135 C 0,820 129 C 0,881 e 25/13/7 (ef 25) core b66317
siemens matsushita components 451 coil former (magnetic axis horizontal or vertical) material: gfr polyterephthalate (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 winding: see page 159 squared pins material: stainless spring steel (0,25 mm) figure 1, horizontal version coil former ordering code figure sections a n mm 2 l n mm a r value mw pins 1 1 61 50 28 10 b66208-a1110-t1 2 1 61 50 28 10 b66208-j1110-t1 yoke (ordering code per piece, 2 are required) b66208-a2010 fek0352-i 15 6. 10 7,7+0,2 17,3 0,25 _ 27,5 0,3 _ 3,5 0,5 _ 17,8 max. 2,20,1 7,7+0,2 0,3 17 _ 0,70,1 0,70,1 0,7 _ 9,4 0,25 ?1,6+0,1 4 x 5,08 = 20,32 5,08 20,32 9,4 0,25 _ 0,35 28 _ hole arrangement view in mounting direction e 25/13/7 (ef 25) accessories b66208
452 siemens matsushita components figure 2, vertical version yoke fek0323-5 9,6 _ 0,2 0,3 17,3 _ 27,5 0,3 _ 0,6 _ 3,6 26 max. 2,2 _ 0,15 17,3 _ 0,3 0,850,1 17 0,850,1 0,7 5,08 4 x 5,08 = 20,32 12,7 7,7+0,2 7,7+0,2 15 10 6. ? 1,6+0,1 view in mounting direction hole arrangement 0,2 9,6 _ e 25/13/7 (ef 25) accessories b66208
siemens matsushita components 453 coil former for smps transformers with line isolation material: gfr polyterephthalate (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 winding: see page 159 squared pins yoke material: nickel silver (0,3 mm) with ground terminal coil former yoke coil former ordering code sections a n mm 2 l n mm a r value mw pins 1 56 52 32 9 b66208-j1009-t1 yoke (ordering code per piece, 2 piece required) b66208-a2003 fek0353-r 7,7+0,1 10 0,15 _ 0,2 17,3 _ 20,32 26 0,2 _ 12,70,1 14,4 0,4 18,9 _ 2,25 0,2 _ 0,2 7,7+0,1 0,15 10 17,3 _ _ erdungspunkte 96 51 1,25 0,4 _ 15,6 0,2 _ 25,7 3,5 0,2 _ 0,25 _ 17,1 ?1+0,1 2,54 ground hole arrangement view in mounting direction e 25/13/7 (ef 25) accessories b66208
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