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MSS1278MSS1278

MSS1278 Series Shielded
Surface Mount Power Inductors

New RoHS part numbers are shown. Lead was removed from internal connections. Last three characters indicate tolerance, RoHS compliance, and packaging. (View old data sheet.)
  • Magnetically shielded
  • Saturation current rating up to 30.6 Amps!
  • Low DC resistance for greater efficiency
  • Inductance ratings from 1.4 to 1000 µH
  • 10% tolerance for parts >100 µH
  • Very high reliability and low cost
  • RoHS-compliant. 260°C compatible. Matte tin over nickel over phos bronze terminations
  • COTS Plus tin-silver-copper and tin-lead terminations available
  • Samples of all values are available in Coilcraft Designer's Kit C380

MSS1278 Photo    Pricing    Materials declaration    PDF data sheet

SPECIFICATIONS

  L vs Frequency     L vs Current    Current Derating     Core loss

Dimensions    Tape and reel specifications    Qualification standards

SPICE models
MSS1278-142ML_ 1.4±20% 8.8 9.8 80.0 25.2 28.6 30.6 7.00 10.00
MSS1278-472ML_ 4.7±20% 13.9 15.5 30.0 13.7 15.2 15.9 4.30 6.20
MSS1278-562ML_ 5.6±20% 15.7 17.5 24.0 12.2 13.7 14.5 4.30 6.20
MSS1278-682ML_ 6.8±20% 19.1 21.3 21.0 12.1 13.6 14.6 4.20 6.00
MSS1278-822ML_ 8.2±20% 20.3 22.6 20.0 10.1 11.5 12.3 4.10 5.90
MSS1278-103ML_ 10 ±20% 21.8 24.3 17.0 9.36 10.6 11.2 4.00 5.70
MSS1278-123ML_ 12 ±20% 23.2 25.8 15.0 8.84 10.0 10.7 3.70 5.20
MSS1278-153ML_ 15 ±20% 27.9 31.0 13.0 7.30 8.36 9.00 3.50 4.90
MSS1278-183ML_ 18 ±20% 30.8 34.3 12.0 6.10 7.10 7.74 3.00 4.50
MSS1278-223ML_ 22 ±20% 35.5 39.5 11.0 6.04 6.78 7.24 2.90 4.00
MSS1278-273ML_ 27 ±20% 45.0 50.0 10.0 5.8 6.56 7.02 2.60 3.60
MSS1278-333ML_ 33 ±20% 61.9 68.8 9.5 5.22 5.90 6.30 2.30 3.10
MSS1278-393ML_ 39 ±20% 69.1 76.8 8.5 4.68 5.42 5.80 2.10 3.00
MSS1278-473ML_ 47 ±20% 72.3 80.4 7.5 4.40 5.02 5.32 2.00 2.90
MSS1278-563ML_ 56 ±20% 80.2 89.2 7.0 4.02 4.60 4.90 1.90 2.70
MSS1278-683ML_ 68 ±20% 91.3 101.5 6.5 3.40 3.86 4.26 1.80 2.60
MSS1278-823ML_ 82 ±20% 125.9 139.9 5.0 3.12 3.58 3.80 1.60 2.30
MSS1278-104ML_ 100±20% 135.1 150.2 4.5 2.70 3.10 3.38 1.50 2.20
MSS1278-124KL_ 120±10% 182.3 202.6 4.3 2.74 3.08 3.30 1.40 1.90
MSS1278-154KL_ 150±10% 216.5 240.6 4.1 2.48 2.86 3.02 1.30 1.80
MSS1278-184KL_ 180±10% 229.0 254.5 4.0 2.26 2.58 2.74 1.20 1.70
MSS1278-224KL_ 220±10% 323.6 359.6 3.4 1.96 2.22 2.36 1.00 1.60
MSS1278-274KL_ 270±10% 415.6 461.8 3.1 1.74 2.04 2.18 0.90 1.20
MSS1278-334KL_ 330±10% 487.3 541.5 2.9 1.66 1.86 2.00 0.80 1.00
MSS1278-394KL_ 390±10% 533.6 592.9 2.7 1.52 1.72 1.88 0.75 1.00
MSS1278-474KL_ 470±10% 707.5 786.2 2.2 1.34 1.54 1.64 0.66 0.90
MSS1278-564KL_ 560±10% 777.4 863.8 2.0 1.24 1.42 1.50 0.60 0.80
MSS1278-684KL_ 680±10% 1045 1162 1.7 1.16 1.28 1.38 0.55 0.75
MSS1278-824KL_ 820±10% 1166 1296 1.4 1.04 1.16 1.26 0.50 0.70
MSS1278-105KL_ 1000±10% 1334 1483 1.3 0.97 1.10 1.14 0.48 0.68
1 When ordering, please specify termination and packaging codes: e.g. MSS1278-105KLD
  Termination: L = RoHS compliant matte tin over nickel over phos bronze
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37).
Packaging: D = 13" reel, machine-ready 
EIA-481 embossed plastic tape (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.
2 Inductance tested at 100 kHz, 0.1 Vrms, 0 Adc using 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 4191D network analyzer or eqivalent. Details
5 Isat: DC current at which the inductance drops the specified amount from its value without current. Details
6 Irms: Current that causes the specified temperature rise from 25°C ambient. Details
7 Ambient temperature range: –55°C to +85°C with Irms current.
+85°C to +125°C with derated current Derating curve
8 Storage temperature range: Component: –55°C to +125°C
Packaging: –55°C to +80°C
9 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10 Electrical specifications at 25°C.
See Qualification Standards for complete environmental and test data.
Refer to Soldering Coilcraft Components before soldering.
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Updated: May 13, 2008