Web Sample Tools & Support Document 1511-1 page & buy software & FAQ High Temp Power Inductors MSS1278H Halogen Designed for high ambient temperatures Free Magnetic shielding, very low DCR, excellent current handling AEC-Q200 Grade 1 (40C to +125C) Core material Ferrite AEC Core and winding loss See www.coilcraft.com/coreloss + Q200 125C Environmental RoHS Compliant, halogen free 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 (40C rise) Irms current. Maximum part temperature +165C (ambient + temp rise). Derating. Storage temperature Component: 40C to +165C. Tape and reel packaging: 40C 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) Packaging 500/13 reel Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 8.7 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. 3 5 6 1. Please specify termination code: DCR Isat (A) Irms (A) SRF 2 (mOhms) 4 Inductance typ 10% 20% 30% 20C 40C MSS1278H-105KED 1 Part number (H) typ max (MHz) drop drop drop rise rise Termination: E = RoHS compliant matte tin over MSS1278H-821M D 0.82 20% 3.7 4.5 107 26.5 29.0 31.0 7.50 10.50 nickel over phos bronze. MSS1278H-142M D 1.4 20% 4.6 5.6 77 21.0 23.0 24.5 7.50 10.50 Special order: MSS1278H-202M D 2.0 20% 5.1 6.2 60 17.6 21.2 24.0 7.00 10.00 T = RoHS tin-silver-copper MSS1278H-272M D 2.7 20% 5.7 7.0 49 14.9 16.7 18.0 6.20 8.80 (95.5/4/0.5) or S = non-RoHS MSS1278H-392M D 3.9 20% 7.0 8.6 41 12.9 14.4 15.5 6.20 8.60 tin-lead (63/37). MSS1278H-472M D 4.7 20% 7.8 9.4 33 11.4 12.7 13.7 5.30 7.40 Packaging: D = 13 machine-ready reel. EIA-481 embossed plastic tape (500 parts MSS1278H-602M D 6.0 20% 10.0 12.0 27 10.0 11.3 12.2 5.00 7.20 per full reel). Quantities less than MSS1278H-722M D 7.2 20% 10.6 12.8 24 9.2 10.3 11.1 4.40 6.00 full reel available: in tape (not MSS1278H-872M D 8.7 20% 13.5 16.3 22 8.3 9.3 10.0 4.30 5.80 machine ready) or with leader MSS1278H-103M D 10 20% 15.0 18.0 20 7.6 8.4 9.2 4.20 5.60 and trailer ( 25 charge). MSS1278H-123M D 12 20% 16.0 19.2 18 7.0 7.9 8.5 3.80 5.40 2. Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc using MSS1278H-153M D 15 20% 17.0 20.4 17 6.5 7.3 7.9 3.60 5.10 an Agilent/HP 4263B LCR meter or equivalent. MSS1278H-183M D 18 20% 22.0 26.5 14 5.7 6.5 7.0 3.40 4.80 3. DCR measured on a micro-ohmmeter and a MSS1278H-223M D 22 20% 25.0 30.0 12 5.1 5.8 6.2 3.00 4.30 Coilcraft CCF858 test fixture. MSS1278H-273M D 27 20% 34.0 41.0 10 4.6 5.2 5.6 2.80 3.90 4. SRF measured using an Agilent/HP 8753D network MSS1278H-333M D 33 20% 38.0 45.0 9.5 4.2 4.7 5.1 2.70 3.80 analyzer and a Coilcraft SMD- D test fixture. MSS1278H-393M D 39 20% 44.0 53.0 8.5 3.8 4.3 4.7 2.60 3.70 5. DC current at 25C that causes the specified MSS1278H-473K D 47 10% 48.0 57.0 7.5 3.6 4.0 4.4 2.30 3.20 inductance drop from its value without current. MSS1278H-563K D 56 10% 61.0 73.0 7.0 3.3 3.7 4.0 2.20 3.10 Click for temperature derating information. MSS1278H-683K D 68 10% 68.0 83.0 6.5 3.0 3.3 3.6 2.00 2.70 6. Current that causes the specified temperature MSS1278H-823K D 82 10% 89.0 108 5.5 2.7 3.1 3.3 1.80 2.40 rise from 25C ambient. This information is for MSS1278H-104K D 100 10% 101 121 5.0 2.4 2.8 3.0 1.70 2.30 reference only and does not represent absolute MSS1278H-124K D 120 10% 113 132 4.5 2.2 2.5 2.7 1.60 2.20 maximum ratings. Click for temperature derating information. MSS1278H-154K D 150 10% 155 181 3.9 2.0 2.2 2.4 1.30 1.80 MSS1278H-184K D 180 10% 174 208 3.6 1.8 2.0 2.2 1.20 1.70 7. Electrical specifications at 25C. MSS1278H-224K D 220 10% 225 270 3.5 1.6 1.9 2.0 1.05 1.45 Refer to Doc 362 Soldering Surface Mount Components before soldering. MSS1278H-274K D 270 10% 257 305 3.3 1.5 1.7 1.8 1.00 1.40 MSS1278H-334K D 330 10% 291 350 2.9 1.3 1.5 1.6 0.92 1.30 MSS1278H-394K D 390 10% 379 450 2.4 1.2 1.4 1.5 0.85 1.15 MSS1278H-474K D 470 10% 430 500 2.3 1.1 1.3 1.4 0.80 1.10 MSS1278H-564K D 560 10% 562 660 1.9 1.0 1.2 1.3 0.66 0.90 MSS1278H-684K D 680 10% 633 760 1.7 0.92 1.0 1.1 0.63 0.85 MSS1278H-824K D 820 10% 721 840 1.7 0.84 0.97 1.0 0.60 0.80 MSS1278H-105K D 1000 10% 970 1150 1.4 0.76 0.87 0.94 0.54 0.74 US +1-847-639-6400 sales coilcraft.com Document 1511-1 Revised 11/16/21 UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 1511-2 SMT Power Inductors MSS1278H Series Typical L vs Frequency Typical L vs Current 10000 10000 Halogen 1000 H 1000 H Free 1000 1000 100 H 100 H 100 100 AEC + Q200 125C 10 H 10 H 10 10 1.4 H 1.4 H 1 1 0.1 0.1 0.1 1 10 100 0.01 0.1 1 10 Current (A) Frequency (MHz) inches Dimensions are in mm US +1-847-639-6400 sales coilcraft.com Document 1511-2 Revised 11/16/21 UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information. Inductance (H) Inductance (H)