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Power Magnetics Tools
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MSS1278 Series Shielded
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| 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
- 10% tolerance for parts >100 µH
- Very high reliability and low cost
- AEC-Q200 Grade 3 (-40°C to +85°C) qualified. For AEC-Q200 Grade 1 (-40°C to+125°C), see the MSS1278T series.
- 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
Photo 
Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
L vs Frequency
L vs Current Current Derating
Core loss
Dimensions 
Tape and reel specifications
SPICE models
3D model
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| 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 |
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| 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). |
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| 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. |
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| 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: |
–40°C to +85°C with Irms current. +85°C to +125°C with derated current Derating curve |
| 8 | Storage temperature range: | Component: –40°C to +125°C Tape and reel packaging: –40°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. | |
| Refer to Soldering Coilcraft Components before soldering. | ||
| PCB washing: Tested with pure water or alcohol only. Other solvents. | ||
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