Document 540-1 RE U T A R E P M E T HIGH SMT Power Inductors – MSS1246T • Designed for high ambient temperatures • Magnetic shielding allows high density mounting. Designer’s Kit C417 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 +125°C with Irms current, +125°C to +165°C with derated current Storage temperature Component: –40°C to +165°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 Inductance2 Part number1 (µH) MSS1246T-102ML_ 1.0 ±20% MSS1246T-152ML_ 1.5 ±20% MSS1246T-272ML_ 2.7 ±20% MSS1246T-332ML_ 3.3 ±20% MSS1246T-472ML_ 4.7 ±20% MSS1246T-562ML_ 5.6 ±20% MSS1246T-682ML_ 6.8 ±20% MSS1246T-822ML_ 8.2 ±20% MSS1246T-103ML_ 10 ±20% MSS1246T-123ML_ 12 ±20% MSS1246T-153ML_ 15 ±20% MSS1246T-183ML_ 18 ±20% MSS1246T-223ML_ 22 ±20% MSS1246T-273ML_ 27 ±20% MSS1246T-333ML_ 33 ±20% MSS1246T-393ML_ 39 ±20% MSS1246T-473ML_ 47 ±20% MSS1246T-563ML_ 56 ±20% MSS1246T-683ML_ 68 ±20% MSS1246T-823ML_ 82 ±20% MSS1246T-104ML_ 100 ±20% MSS1246T-124KL_ 120 ±10% MSS1246T-154KL_ 150 ±10% MSS1246T-184KL_ 180 ±10% MSS1246T-224KL_ 220 ±10% MSS1246T-274KL_ 270 ±10% MSS1246T-334KL_ 330 ±10% MSS1246T-394KL_ 390 ±10% MSS1246T-474KL_ 470 ±10% MSS1246T-564KL_ 560 ±10% MSS1246T-684KL_ 680 ±10% MSS1246T-824KL_ 820 ±10% MSS1246T-105KL_ 1000 ±10% DCR3 SRF (mOhms) typ4 typ max (MHz) 5.6 6.3 100 8.7 9.7 85.0 10.3 11.5 70.0 15.1 16.8 65.0 19.1 21.3 42.0 22.1 24.6 37.0 24.9 27.7 33.0 27.4 30.5 31.0 36.8 40.9 27.0 38.9 43.3 24.0 48.6 54.1 22.0 51.0 56.7 19.0 60.3 67.0 18.0 67.5 75.0 16.0 81.7 90.8 15.0 95.2 105.8 13.3 120.6 134.0 12.0 133.8 148.7 10.6 167.3 185.9 9.7 188.5 209.5 8.8 216.8 240.9 8.0 287.2 319.2 7.2 326.7 363.0 6.6 379.5 421.7 5.9 488.2 542.5 5.3 560.1 622.4 4.7 731.4 812.7 4.1 813.7 904.2 3.8 935.1 1039 3.5 1193 1326 3.0 1370 1523 2.8 1590 1767 2.6 2090 2323 2.4 Isat (A)5 10% 20% 30% drop drop drop 18.14 20.64 22.24 14.06 15.90 17.08 11.66 13.16 14.16 9.74 11.08 11.98 8.62 9.70 10.42 7.62 8.74 9.44 7.38 8.36 9.00 6.84 7.70 8.32 5.88 6.66 7.18 5.34 6.04 6.52 4.68 5.36 5.78 4.32 4.92 5.32 3.84 4.34 4.75 3.54 4.02 4.32 3.24 3.66 3.96 3.04 3.46 3.72 2.70 3.08 3.34 2.46 2.80 3.02 2.26 2.54 2.74 1.98 2.26 2.46 1.84 2.08 2.24 1.62 1.86 2.04 1.48 1.70 1.82 1.36 1.56 1.68 1.22 1.38 1.50 1.12 1.26 1.36 1.00 1.10 1.20 0.946 1.00 1.10 0.864 0.978 1.00 0.776 0.884 0.956 0.720 0.818 0.882 0.634 0.728 0.792 0.594 0.676 0.728 Irms (A)6 20°C 40°C rise rise 6.00 8.00 5.80 7.80 5.00 6.80 4.50 6.30 4.40 6.00 3.95 5.75 3.70 5.20 3.35 4.67 2.85 3.90 2.69 3.65 2.50 3.40 2.41 3.19 2.30 3.14 2.06 2.86 1.90 2.60 1.73 2.39 1.50 2.10 1.44 2.01 1.30 1.80 1.24 1.72 1.19 1.65 1.03 1.42 0.95 1.30 0.89 1.21 0.76 1.00 0.72 0.95 0.65 0.87 0.59 0.79 0.56 0.76 0.50 0.67 0.46 0.62 0.43 0.58 0.36 0.50 1. Please specify termination and packaging codes: MSS1246T-105KLD 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 (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 the specified amount 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 540-1 Revised 10/15/08 Document 540-2 URE T A R E P M E T HIGH SMT Power Inductors – MSS1246T Typical L vs Frequency Typical L vs Current 10000 10000 1000 µH 1000 µH 1000 Inductance (µH) Inductance (µH) 1000 100 µH 100 10 µH 10 100 µH 100 10 µH 10 1 µH 1 1 µH 1 0.1 0.01 1 0.1 10 0.1 0.1 10 1 Frequency (MHz) 100 Current (A) 0.472 ±0.012 12,0 ±0,30 Current Derating 120 123 X 0.472 ±0.012 12,0 ±0,30 100 90 Dash number Internal code 80 70 60 0.181 ±0.008 4,6 ±0,20 50 40 25°C Percent of rated Current 110 30 20 Isat Irms 10 0 -40 -20 0 20 40 60 80 100 120 Ambient temperature (°C) 140 0.157 4,0 0.138 ±0.016 3,5 ±0,40 160 180 0.197 ±0.016 5,0 ±0,40 Dimensions are in 0.335 8,5 inches mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 0.217 5,5 0.197 ±0.008 5,0 ±0,20 Recommended Land Pattern Document 540-2 Revised 10/15/08