specifications subject to change without notice. please check our website for latest information. document 322-1 document 322-1 revised 12/28/04 smt power inductors - mss1278 series the mss1278 series provides high inductance and high efficiency in a rugged, low cost part. the magnetic shielding and small footprint of these inductors allows high density mounting. the flat top ensures reliable pick and place handling. they?re ideal for use in dc-dc converters, lcd panels, and portable devices where low cost and high reliabilty are critical. in addition to the standard values shown, coilcraft can custom-engineer versions to meet specific applications. coilcraft designer?s kit c180 contains samples of all values shown. to order, contact coilcraft or purchase on-line at http://order.coilcraft.com . i rms 5 dcr srf 3 20c 40c l 2 max typ i sat 4 rise rise part number 1 (h) (ohms) (mhz) (a) (a) (a) mss1278-142mx_ 1.4 20% 0.011 80.0 11.50 7.00 10.00 mss1278-472mx_ 4.7 20% 0.020 30.0 7.00 4.30 6.20 mss1278-562mx_ 5.6 20% 0.023 24.0 6.80 4.30 6.20 mss1278-682mx_ 6.8 20% 0.024 21.0 6.40 4.20 6.00 mss1278-822mx_ 8.2 20% 0.028 20.0 5.80 4.10 5.90 mss1278-103mx_ 10 20% 0.030 17.0 5.40 4.00 5.70 mss1278-123mx_ 12 20% 0.032 15.0 4.90 3.70 5.20 mss1278-153mx_ 15 20% 0.038 13.0 4.50 3.50 4.90 mss1278-183mx_ 18 20% 0.043 12.0 4.00 3.00 4.50 mss1278-223mx_ 22 20% 0.050 11.0 3.60 2.90 4.00 mss1278-273mx_ 27 20% 0.060 10.0 3.30 2.60 3.60 mss1278-333mx_ 33 20% 0.080 9.5 3.00 2.30 3.10 mss1278-393mx_ 39 20% 0.085 8.5 2.70 2.10 3.00 mss1278-473mx_ 47 20% 0.10 7.5 2.50 2.00 2.90 mss1278-563mx_ 56 20% 0.11 7.0 2.30 1.90 2.70 mss1278-683mx_ 68 20% 0.12 6.5 2.10 1.80 2.60 mss1278-823mx_ 82 20% 0.15 5.0 1.90 1.60 2.30 mss1278-104mx_ 100 20% 0.18 4.5 1.70 1.50 2.20 mss1278-124kx_ 120 10% 0.23 4.3 1.55 1.40 1.90 mss1278-154kx_ 150 10% 0.27 4.1 1.40 1.30 1.80 mss1278-184kx_ 180 10% 0.30 4.0 1.30 1.20 1.70 mss1278-224kx_ 220 10% 0.40 3.4 1.15 1.00 1.60 mss1278-274kx_ 270 10% 0.53 3.1 1.00 0.90 1.20 mss1278-334kx_ 330 10% 0.60 2.9 0.90 0.80 1.00 mss1278-394kx_ 390 10% 0.68 2.7 0.85 0.75 1.00 mss1278-474kx_ 470 10% 0.88 2.2 0.78 0.66 0.90 mss1278-564kx_ 560 10% 0.96 2.0 0.72 0.60 0.80 mss1278-684kx_ 680 10% 1.30 1.7 0.65 0.55 0.75 mss1278-824kx_ 820 10% 1.50 1.4 0.60 0.50 0.70 mss1278-105kx_ 1000 10% 1.70 1.3 0.55 0.48 0.68 1. when ordering, please specify packaging code: mss1278-105kx d 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 on agilent/hp 4284a lc meter or equivalent. 3. srf measured using agilent/hp 4191a or equivalent. 4. dc current at which the inductance drops 10% (typ) from its value without current. 5. average current for temperature rise from 25c ambient. 6. operating temperature range ? 40c to +85c. 7. electrical specifications at 25c. see qualification standards section for environmental and test data.
specifications subject to change without notice. please check our website for latest information. document 322-2 document 322-2 revised 12/28/04 smt power inductors - mss1278 series typical l vs frequency typical l vs current 1 10 100 1000 10000 0.01 0.1 10 1 inductance (h) frequency (mhz) 4.7 h 100 h 10 h 1000 h 1 10 100 1000 10000 0.1 1 100 10 inductance (h) current (a) 4.7 h 100 h 10 h 1000 h xxx 0.217 5,5 recommended land pattern 0.177 4,5 0.157 4,0 0.197 5,0 0.197 5,0 0.138 3,5 0.317 8,05 0.484 12,3 max 0.484 12,3 max max weight: 3.8 ? 4.6 g terminations: nickel/tin over phos bronze tape and reel: 500/13 reel 24 mm tape width for packaging data see tape and reel specifications section.
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