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MSS1278T Series

High Temperature Power Inductors

RoHS compliant AEC-Q flag
Coilcraft MSS1278T Series shielded surface-mount power inductors feature low DC resistance and excellent current handling in a wide range of industry-standard footprints and inductance values, making them a cost-effective option for a variety of general-purpose applications. 
  • Low-loss ferrite drum core for flat inductance vs current
  • Low DC resistance for greater efficiency
  • Excellent current handling
  • Magnetic shielding allows high-density mounting
  • AEC-Q200 Grade 1 (−40°C to +125°C)​
Need parts for space, military or other critical applications? See Coilcraft CPS 612PNB series.
Buy Now:
Count Unit price
1 $1.45
250 $1.15
500 $0.94
1000 $0.82
2500 $0.70
5000 $0.64

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:
Designer's Kit:
Kit Values Price
C419 34 (3 of each) $100.00

Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2 Tolerance (%) DCR (mΩ) 3 SRF typ (MHz) 4 Isat (A) 5 Irms (A) 6
typ max 10% drop 20% drop 30% drop 20°C rise 40°C rise
MSS1278T-102NL_ 1.0 30 6.3 7.0 115 31.8 35.0 36.8 7.1 10.1
MSS1278T-142NL_ 1.4 30 8.8 9.8 85.0 25.0 27.8 29.5 6.8 9.8
MSS1278T-222NL_ 2.2 30 9.4 10.5 60.0 22.6 24.8 26.0 6.3 9.2
MSS1278T-272NL_ 2.7 30 10.1 11.3 40.0 18.8 20.7 22.0 6.1 8.6
MSS1278T-392NL_ 3.9 30 11.7 13.0 35.0 16.5 18.2 19.2 0.80 7.7
MSS1278T-472ML_ 4.7 20 13.9 15.5 33.0 15.3 16.9 17.8 4.3 6.2
MSS1278T-562ML_ 5.6 20 15.7 17.5 30.0 13.4 14.9 15.7 4.3 6.2
MSS1278T-682ML_ 6.8 20 19.1 21.3 23.0 12.1 13.6 14.2 4.2 6.0
MSS1278T-822ML_ 8.2 20 20.3 22.6 20.0 11.4 12.6 13.3 4.1 5.9
MSS1278T-103ML_ 10 20 21.8 24.3 17.0 10.6 11.8 12.5 4.0 5.7
MSS1278T-123ML_ 12 20 23.2 25.8 15.0 8.9 9.9 10.4 3.7 5.2
MSS1278T-153ML_ 15 20 27.9 31.0 13.0 8.4 9.3 9.9 3.5 4.9
MSS1278T-183ML_ 18 20 30.8 34.3 12.0 8.0 8.9 9.4 3.0 4.5
MSS1278T-223ML_ 22 20 35.5 39.5 11.0 7.1 7.9 8.3 2.9 4.0
MSS1278T-273ML_ 27 20 45.0 50.0 10.0 6.3 7.1 7.5 2.6 3.6
MSS1278T-333ML_ 33 20 61.9 68.8 9.5 6.0 6.6 7.0 2.3 3.1
MSS1278T-393ML_ 39 20 69.1 76.8 8.5 5.4 5.9 6.3 2.1 3.0
MSS1278T-473ML_ 47 20 72.3 80.4 7.5 4.8 5.4 5.7 2.0 2.9
MSS1278T-563ML_ 56 20 80.2 89.2 7.0 4.4 5.0 5.3 1.9 2.7
MSS1278T-683ML_ 68 20 91.3 102 6.5 3.9 4.5 4.7 1.8 2.6
MSS1278T-823ML_ 82 20 126 140 5.0 3.7 4.1 4.4 1.6 2.3
MSS1278T-104ML_ 100 20 135 150 4.5 3.1 3.6 3.8 1.5 2.2
MSS1278T-124KL_ 120 10 182 203 4.3 3.0 3.4 3.6 1.4 1.9
MSS1278T-154KL_ 150 10 217 241 4.1 2.6 2.9 3.1 1.3 1.8
MSS1278T-184KL_ 180 10 229 255 4.0 2.4 2.7 2.8 1.2 1.7
MSS1278T-224KL_ 220 10 324 360 3.4 2.2 2.5 2.6 1.0 1.6
MSS1278T-274KL_ 270 10 416 462 3.1 1.9 2.2 2.3 0.90 1.2
MSS1278T-334KL_ 330 10 487 542 2.9 1.7 1.9 2.1 5.7 1.0
MSS1278T-394KL_ 390 10 534 593 2.7 1.6 1.8 1.9 0.75 1.0
MSS1278T-474KL_ 470 10 708 786 2.2 1.4 1.6 1.7 0.66 0.90
MSS1278T-564KL_ 560 10 777 864 2.0 1.4 1.5 1.7 0.60 0.80
MSS1278T-684KL_ 680 10 1045 1162 1.7 1.2 1.3 1.5 0.55 0.75
MSS1278T-824KL_ 820 10 1166 1296 1.4 1.1 1.3 1.4 0.50 0.70
MSS1278T-105KL_ 1000 10 1334 1482 1.3 0.98 1.1 1.2 0.48 0.68
Notes
  1. When ordering, please specify termination and packaging codes: e.g. MSS1278T-105KLC
  2. Inductance measured at 100 kHz, 0.1 Vrms using a Coilcraft SMD-A fixture in an Agilent/HP 4263B LCR meter or equivalent
  3. DCR measured at 25°C on a micro-ohmmeter and a Coilcraft CCF858 test fixture. For other operating temperatures, use this DCR at Temperature calculator.
  4. SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD -D test fixture.
  5. Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
  6. Irms: Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.

Termination:

  • L = RoHS compliant matte tin over nickel over phos bronze.
  • T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
  • S = non-RoHS tin-lead (63/37). (Special order, added cost)

Packaging:

  • 13" reel, machine-ready 
    EIA-481 embossed plastic tape. Factory order only, not stocked (500 parts per full reel).
  • B = Less than full reel
    In tape, not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +125°C with (40°C rise) Irms current.
Storage temperature range:
Component: –40°C to +165°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+165°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Performance curves

Inductance vs. Current

Inductance vs. Frequency

Physical characteristics

mss1278td.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation ‡
13" (330 mm) A B C D E W P Po P1 H T part_or_o.gif
500 330 100 13 30,4 24,4 24 16 4 2 8,7 0,5
‡ Part marking does not indicate polarity

General specification

Core Material:
Ferrite
Weight:
3.8 - 4.6 g
Packaging:
500/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 8.7 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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