Document 471-1 SMT Power Inductors – MSS1246 • 12 × 12 mm footprint; 4.6 mm high shielded inductors • Very low DCR and excellent current handling Designer’s Kit C410 contains 3 each of all values. Core material Ferrite Terminations RoHS compliant matte tin over nickel over phos bronze. Other terminations available at additional cost. Weight: 2.3 g – 2.5 g Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –40°C to +125°C. Packaging: –40°C to +80°C Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 200/7″ reel; 800/13″ reel; Plastic tape: 24 mm wide, 0.35 mm thick, 16 mm pocket spacing, 4.7 mm pocket depth PCB washing Only pure water or alcohol recommended Part number1 Inductance2 (µH) MSS1246-472ML_ 4.7 ±20% MSS1246-562ML_ 5.6 ±20% MSS1246-682ML_ 6.8 ±20% MSS1246-822ML_ 8.2 ±20% MSS1246-103ML_ 10 ±20% MSS1246-123ML_ 12 ±20% MSS1246-153ML_ 15 ±20% MSS1246-183ML_ 18 ±20% MSS1246-223ML_ 22 ±20% MSS1246-273ML_ 27 ±20% MSS1246-333ML_ 33 ±20% MSS1246-393ML_ 39 ±20% MSS1246-473ML_ 47 ±20% MSS1246-563ML_ 56 ±20% MSS1246-683ML_ 68 ±20% MSS1246-823ML_ 82 ±20% MSS1246-104ML_ 100 ±20% MSS1246-124KL_ 120 ±10% MSS1246-154KL_ 150 ±10% MSS1246-184KL_ 180 ±10% MSS1246-224KL_ 220 ±10% MSS1246-274KL_ 270 ±10% MSS1246-334KL_ 330 ±10% MSS1246-394KL_ 390 ±10% MSS1246-474KL_ 470 ±10% MSS1246-564KL_ 560 ±10% MSS1246-684KL_ 680 ±10% MSS1246-824KL_ 820 ±10% MSS1246-105KL_ 1000 ±10% DCR3 (mOhms) typ max 19.1 22.1 24.9 27.4 36.8 38.9 48.6 51.0 60.3 67.5 81.7 95.2 120.6 133.8 167.3 188.5 216.8 287.2 326.7 379.5 488.2 560.1 731.4 813.7 935.1 1193 1370 1590 2090 21.3 24.6 27.7 30.5 40.9 43.3 54.1 56.7 67.0 75.0 90.8 105.8 134.0 148.7 185.9 209.5 240.9 319.2 363.0 421.7 542.5 622.4 812.7 904.2 1039 1326 1523 1767 2323 Isat (A)5 Irms (A)6 SRF typ4 10% 20% 30% 20°C 40°C (MHz) drop drop drop rise rise 42 37 33 31 27 24 22 19.0 18.0 16.0 15.0 13.3 12.0 10.6 9.7 8.8 8.0 7.2 6.6 5.9 5.3 4.7 4.1 3.8 3.5 3.0 2.8 2.6 2.4 8.52 7.64 6.52 5.98 5.72 5.02 4.58 4.28 3.76 3.46 3.14 2.72 2.66 2.34 2.10 1.80 1.64 1.62 1.36 1.34 1.18 1.04 1.00 0.91 0.81 0.76 0.68 0.61 0.56 9.42 8.66 7.34 6.80 6.44 5.76 5.24 4.78 4.24 3.92 3.54 3.14 3.06 2.64 2.40 2.06 1.86 1.82 1.58 1.48 1.30 1.18 1.10 1.00 0.92 0.85 0.77 0.70 0.63 9.86 9.28 7.82 7.34 6.84 6.22 5.54 5.14 4.50 4.18 3.78 3.38 3.24 2.80 2.56 2.24 2.04 1.92 1.70 1.60 1.40 1.24 1.20 1.08 0.98 0.90 0.82 0.75 0.68 4.50 4.19 3.80 3.55 3.30 3.00 2.85 2.71 2.50 2.16 1.90 1.73 1.50 1.44 1.30 1.24 1.20 1.03 0.95 0.89 0.76 0.72 0.65 0.59 0.56 0.50 0.46 0.43 0.36 6.00 5.75 5.20 4.87 4.20 3.95 3.80 3.52 3.40 2.96 2.60 2.39 2.10 2.01 1.80 1.72 1.60 1.42 1.30 1.21 1.00 0.95 0.87 0.79 0.76 0.67 0.62 0.58 0.50 1. Please specify termination and packaging codes: MSS1246-105MLC 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: C=7″ machine-ready reel. EIA-481 embossed plastic tape (200 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 C instead. D=13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (800 parts per full reel). 2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD-A fixture in 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 10% (max) from its value without current. 6. Current that causes the specified temperature rise from 25°C ambient. 7. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 Document 471-1 Revised 10/15/08 Document 471-2 SMT Power Inductors – MSS1246 Typical L vs Current Typical L vs Frequency 10000 10000 470 µH 180 µH 100 1000 µH 1000 1000 µH Inductance (µH) Inductance (µH) 1000 68 µH 27 µH 10 470 µH 180 µH 100 68 µH 27 µH 10 µH 4.7 µH 10 10 µH 4.7 µH 1 1 0.1 10 1 100 0.01 10 Frequency (MHz) Current Derating 0.472 ±0.012 12,0 ±0,30 120 110 0.472 ±0.012 12,0 ±0,30 100 90 123 X Dash number Internal code Parts manufactured prior to Sept. 2007 were marked with only the dash number. 80 70 60 0.181 ±0.008 4,6 ±0,20 50 40 30 20 25°C Percent of rated current 1 0.1 Current (A) Isat Irms 10 0 -40 -20 0 20 40 60 80 Ambient temperature (°C) 100 0.157 4,0 0.138 3,5 120 140 0.197 5,0 inches Dimensions are in mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 0.217 5,5 0.197 5,0 0.335 8,5 Recommended Land Pattern Document 471-2 Revised 10/15/08