1997 nov 21 366 philips components product speci?cation etd cores and accessories etd44 core sets effective core parameters symbol parameter value unit s (i/a) core factor (c1) 0.589 mm - 1 v e effective volume 17800 mm 3 i e effective length 103 mm a e effective area 173 mm 2 a min minimum area 172 mm 2 m mass of core half ? 47 g handbook, halfpage mgc266 22.3 0.2 45 32.5 0 2 15.2 0 0.6 15.2 0 0.6 1.6 0 16.1 0.8 0 fig.1 etd44 core half. dimensions in mm. core halves clamping force 40 20 n. gapped cores are available on request. properties of core sets under power conditions grade a l (nh) m e air gap ( m m) type number 3c30 3100 25% ? 1550 ? 0 etd44-3c30 3c85 3800 25% ? 1900 ? 0 etd44-3c85 3c90 3800 25% ? 1900 ? 0 etd44-3c90 3f3 3500 25% ? 1780 ? 0 etd44-3f3 grade b (mt) at core loss (w) at h = 250 a/m; f = 25 khz; t = 100 c f=25khz; = 200 mt; t = 100 c f = 100 khz; = 100 mt; t = 100 c f = 400 khz; =50mt; t = 100 c 3c30 3 360 2.0 2.2 - 3c85 3 320 2.5 3.0 - 3c90 3 330 2.0 2.2 3f3 3 320 - 2.2 3.9 b ? b ? b ?
1997 nov 21 367 philips components product speci?cation etd cores and accessories etd44 coil formers general data 18-pins etd44 coil former winding data for 18-pins etd44 coil former parameter specification coil former material polybutyleneterephtalate (pbt), glass-reinforced, ?ame retardant in accordance with ul 94v-0 ; ul ?le number e45329(r) pin material copper-tin alloy (cusn), tin-lead alloy (snpb) plated maximum operating temperature 155 c, iec 85 class f resistance to soldering heat iec 68-2-20 , part 2, test tb, method 1b, 350 c, 3.5 s solderability iec 68-2-20 , part 2, test ta, method 1 number of sections winding area (mm 2 ) minimum winding width (mm) average length of turn (mm) type number 1 214 29.5 77 cph-etd44-1s-18p handbook, full pagewidth 40.64 5.08 35.56 52.2 max. 29.5 min. 5.08 5.08 4 38.1 max. 0.8 45.3 min. 49.6 max. 15.5 + 0.3 0 1.6 + 0.15 0 32.3 0 - 0.2 ? 17.5 0 - 0.2 32 0 - 0.3 cbw278 fig.2 etd44 coil former; 18-pins. dimensions in mm.
1997 nov 21 368 philips components product speci?cation etd cores and accessories etd44 mounting parts general data item remarks figure type number mounting clip material: stainless steel 3 cli-etd44 handbook, halfpage mgc268 15 28 48 min 10 0.4 fig.3 mounting clip for etd44. dimensions in mm.
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