smt power inductors shielded toroid series - ros1/ros2 series height: 3.2mm and 5.3mm max footprint: 8.1mm x 5.3mm and 14.0mm x 10.2mm current rating: up to 5a inductance range: .51h to 357h electrical specifications @ 25c ? operating temperature -40c to +130c pulse inductance dcr (m ) inductance reference trise coreloss et part @ irated irated @ 0a dc et factor factor factor number (h min) (a) typ max (h +/- 15%) (v*sec) (k0) (k1) (k2) p0430 0.51 2.00 14 16.1 .7 .8 1.45 1.27e-11 476.2 p0431 0.76 1.90 18 20.7 1.1 .8 1.45 1.27e-11 370.4 p0432 0.85 1.50 18 20.7 1.1 1.2 1.45 1.27e-11 370.4 p0433 1.44 1.20 28 32.2 1.9 1.8 1.45 1.27e-11 277.8 p0434 1.87 1.20 34 39.1 2.6 1.8 1.45 1.27e-11 238.1 p0435 2.72 1.00 40 46 3.9 2.3 1.45 1.27e-11 196.1 p0436 4.33 0.70 73 84 6.0 3.1 1.45 1.27e-11 158.7 p0437 5.35 0.60 100 115 7.1 3.3 1.45 1.27e-11 144.9 p0438 8.84 0.50 140 161 12.2 4.4 1.45 1.27e-11 111.1 p0439 10.79 0.45 155 178 14.7 5.0 1.45 1.27e-11 101.0 p0440 17.59 0.34 250 288 23.8 6.5 1.45 1.27e-11 79.4 p0441 25.50 0.29 280 322 33.8 8.4 1.45 1.27e-11 66.7 p0442 35.80 0.24 440 506 49 9.8 1.45 1.27e-11 55.6 p0443 52.70 0.20 650 747 72 12 1.45 1.27e-11 45.7 p0444 79 0.17 1050 1208 110 14 1.45 1.27e-11 37.0 p0445 88 0.16 1065 1225 122 15 1.45 1.27e-11 35.1 p0446 127 0.14 1600 1840 179 18 1.45 1.27e-11 29.0 p0450 0.51 5.00 8.1 9.3 .65 3 .508 8.87e-11 181.8 p0451 0.67 5.00 8.7 10 .86 3.1 .508 8.87e-11 151.5 p0452 1.09 5.00 11.4 13.1 1.5 .5 .508 8.87e-11 113.6 p0453 1.53 5.00 13.0 15 2.3 1.0 .508 8.87e-11 90.9 p0454 1.78 3.00 15.0 17.3 2.3 7.5 .508 8.87e-11 90.9 p0455 3.74 2.50 23.0 26.5 5.1 10.5 .508 8.87e-11 60.6 p0456 4.76 2.00 26.1 30 6.3 13 .508 8.87e-11 56.8 p0457 5.61 1.80 33.0 38 7.5 14 .508 8.87e-11 50.5 p0458 9.09 1.50 70.4 81 13.2 15 .508 8.87e-11 39.5 p0459 11.47 1.30 60.0 69 15.5 21 .508 8.87e-11 35.0 p0460 22.95 1.00 90.4 104 34 31 .508 8.87e-11 24.6 P0461 39.10 0.90 123.5 142 57.2 39 .508 8.87e-11 18.9 p0462 40.80 0.80 240.0 276 62.5 35 .508 8.87e-11 18.2 p0463 69.70 0.60 245.2 282 100 55 .508 8.87e-11 14.0 p0464 76.50 0.50 305.2 351 103 54 .508 8.87e-11 14.2 p0465 137 0.40 480.9 553 180 78 .508 8.87e-11 10.0 p0466 182 0.35 681.7 784 254 87 .508 8.87e-11 8.7 p0467 272 0.30 1030.4 1185 422.5 105 .508 8.87e-11 7.0 p0468 357 0.25 1200.0 1380 500 130 .508 8.87e-11 6.1 two package sizes: ros 1 series ros 2 series usa 858 674 8100 ? ? uk 44 1483 401 700 ? ? france 33 3 84 35 04 04 ? ? singapore 65 6287 8998 ? ? shanghai 86 21 54643211 / 2 ? ? china 86 769 85538070 ? ? taiwan 886 3 4641811 www.pulseeng.com p617.a (3/06)
smt power inductors shielded toroid series - ros1/ros2 series 1. temperature rise is 55c in typical buck or boost circuits with the rated i dc current and reference et applied to the inductor. 2. total loss in the inductor is 80 mw (ros 1) and 280 mw (ros 2) for 55c temperature rise above ambient. 3. to estimate temperature rise in a given application, you must determine the total losses (copper losses + core losses) and apply the following formula: temp rise (c) = (total losses (mw)) .833 * ko (from table) 4. to determine copper losses, calculate: copper loss (mw) = i dc 2 x dcr 5. for core loss in mwatts, using frequency f (in hz) and operating flux density b (in gauss), calculate: core loss (mw) = k2 * f 1.26 * b 2.11 6. for flux density (b), calculate et (v-sec) for the application, and multiply by et 10 factor from the table. a max g f e b max c d suggested pad layout f mechanical schematic notes: ros 1 ros 2 weight ....................0.29 grams .............1.1 grams tape & reel ...............2000/reel ................600/reel pkg a b c d e f g ros 1 .335 .225 .125 .250 .100 .050 .250 8,51 5,72 3,18 6,35 2,54 1,27 6,35 ros 2 .545 .390 .215 .440 .120 .065 .440 13,84 9,91 5,46 11,18 3,05 1,65 11,18 dimensions: inches mm unless otherwise specified, all tolerances are .010 0,25
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