? coilcraft, inc. 2007 specifications subject to change without notice. please check our website for latest information. high tempera ture document 598-1 document 598-1 revised 02/07/08 smt power inductors C mss1278t dcr 3 srf i sat (a) 5 i rms (a) 6 inductance 2 (mohms) typ 4 10% 20% 30% 20c 40c part number 1 (h) typ max (mhz) drop drop drop rise rise mss1278t-102nl_ 1.0 30% 6.3 7.0 115 31.84 35.04 36.84 7.1 10.1 mss1278t-142nl_ 1.4 30% 8.8 9.8 85 25.04 27.76 29.52 6.8 9.8 mss1278t-222nl_ 2.2 30% 9.4 10.5 60 22.56 24.80 25.96 6.3 9.2 mss1278t-272nl_ 2.7 30% 10.1 11.3 40 18.76 20.72 22.04 6.1 8.6 mss1278t-392nl_ 3.9 30% 11.7 13.0 35 16.52 18.24 19.20 5.7 7.7 mss1278t-472ml_ 4.7 20% 13.9 15.5 33 15.30 16.90 17.76 4.3 6.2 mss1278t-562ml_ 5.6 20% 15.7 17.5 30 13.38 14.86 15.74 4.3 6.2 mss1278t-682ml_ 6.8 20% 19.1 21.3 23 12.10 13.56 14.20 4.2 6.0 mss1278t-822ml_ 8.2 20% 20.3 22.6 20 11.38 12.60 13.28 4.1 5.9 mss1278t-103ml_ 10 20% 21.8 24.3 17 10.62 11.82 12.48 4.0 5.7 mss1278t-123ml_ 12 20% 23.2 25.8 15 8.90 9.88 10.44 3.7 5.2 mss1278t-153ml_ 15 20% 27.9 31.0 13 8.36 9.32 9.94 3.5 4.9 mss1278t-183ml_ 18 20% 30.8 34.3 12 8.00 8.88 9.36 3.0 4.5 mss1278t-223ml_ 22 20% 35.5 39.5 11 7.08 7.88 8.34 2.9 4.0 mss1278t-273ml_ 27 20% 45.0 50.0 10 6.32 7.08 7.54 2.6 3.6 mss1278t-333ml_ 33 20% 61.9 68.8 9.5 5.96 6.56 6.98 2.3 3.1 mss1278t-393ml_ 39 20% 69.1 76.8 8.5 5.38 5.94 6.28 2.1 3.0 mss1278t-473ml_ 47 20% 72.3 80.4 7.5 4.76 5.40 5.66 2.0 2.9 mss1278t-563ml_ 56 20% 80.2 89.2 7.0 4.40 4.98 5.30 1.9 2.7 mss1278t-683ml_ 68 20% 91.3 101.5 6.5 3.92 4.46 4.74 1.8 2.6 mss1278t-823ml_ 82 20% 1 25.9 139.9 5.0 3.66 4.08 4.38 1.6 2.3 mss1278t-104ml_ 100 20% 1 35.1 150.2 4.5 3.12 3.56 3.78 1.5 2.2 mss1278t-124kl_ 120 10% 1 82.3 202.6 4.3 3.02 3.36 3.58 1.4 1.9 mss1278t-154kl_ 150 10% 2 16.5 240.6 4.1 2.60 2.94 3.10 1.3 1.8 mss1278t-184kl_ 180 10% 2 29.0 254.5 4.0 2.36 2.68 2.84 1.2 1.7 mss1278t-224kl_ 220 10% 3 23.6 359.6 3.4 2.24 2.50 2.62 1.0 1.6 mss1278t-274kl_ 270 10% 4 15.6 461.8 3.1 1.94 2.18 2.34 0.90 1.2 mss1278t-334kl_ 330 10% 4 87.3 541.5 2.9 1.72 1.92 2.06 0.80 1.0 mss1278t-394kl_ 390 10% 5 33.6 592.9 2.7 1.62 1.82 1.92 0.75 1.0 mss1278t-474kl_ 470 10% 7 07.5 786.2 2.2 1.44 1.64 1.74 0.66 0.90 mss1278t-564kl_ 560 10% 7 77.4 863.8 2.0 1.40 1.54 1.66 0.60 0.80 mss1278t-684kl_ 680 10% 1045 1162 1.7 1.24 1.32 1.46 0.55 0.75 mss1278t-824kl_ 820 10% 1166 1296 1.4 1.14 1.28 1.42 0.50 0.70 mss1278t-105kl_ 1000 10% 1334 1482 1.3 0.982 1.08 1.18 0.48 0.68 core material ferrite terminations rohs compliant matte tin over nickel over phos bronze. other terminations available at additional cost. weight: 3.8 g ? 4.6 g ambient temperature ?40c to +125c with i rms current, +125c to +165c with derated current storage temperature component: ?40c to +165c. packaging: ?55c to +80c resistance to soldering heat max three 40 second reflows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited floor life at <30c / 85% relative humidity) mean time between failures (mtbf) 26,315,789 hours packaging 500/13 reel; plastic tape: 24 mm wide, 0.4 mm thick, 16 mm pocket spacing, 8.1 mm pocket depth pcb washing only pure water or alcohol recommended ? designed for high ambient temperatures ? very low dcr, excellent current handling ? magnetic shielding allows high density mounting. 1. please specify termination and packaging codes: mss1278t-105k ld termination: l = rohs compliant matte tin over nickel over phos bronze. special order: t = rohs tin-silver-copper (95.5/4/0.5) or s = non-rohs tin-lead (63/37). packaging: d =13 machine-ready reel. eia-481 embossed plastic tape (500 parts per full reel). b = less than full reel. in tape, but not machine ready. to have a leader and trailer added ($25 charge), use code letter d instead. 2. inductance tested at 100 khz, 0.1 vrms, 0 adc using an agilent/hp 4263b lcr meter or equivalent. 3. dcr measured on a micro-ohmmeter and a coilcraft ccf858 test fixture. 4. srf measured using an agilent/hp 8753d network analyzer and a coilcraft smd-d test fixture. 5. dc current at which the inductance drops the specified amount from its value without current. 6. current that causes the specified temperature rise from 25c ambient. 7. electrical specifications at 25c. see qualification standards section for environmental and test data. refer to doc 362 ?soldering surface mount components? before soldering.
? coilcraft, inc. 2007 specifications subject to change without notice. please check our website for latest information. high tempera ture document 598-2 document 598-2 revised 02/07/08 smt power inductors C mss1278t series 0.217 5,5 recommended land pattern 0.157 4,0 0.197 0.008 5,0 0,2 0.197 0.016 5,0 0,4 0.177 4,5 0.138 0.016 3,5 0,4 0.315 0.020 8,00 0,5 0.472 0.012 12,0 0,3 0.472 0.012 12,0 0,3 dash number internal code 123 x 0.1 1 10 100 1000 10000 0.1 1 100 10 inductance (h) current (a) 100 h 10 h 1 h 1000 h current derating -40 -20 0 20 40 60 80 100 180 160 140 120 ambient temperature (c) percent of rated current 120 110 100 90 80 70 60 50 40 30 20 10 0 25c i sat i rms typical l vs frequency typical l vs current 0.01 0.1 10 1 inductance (h) frequency (mhz) 0.1 1 10 100 1000 10000 100 h 10 h 1 h 1000 h
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