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MSS7331 Series

Shielded Surface Mount Power Inductors

RoHS compliant
Coilcraft MSS7331 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
Buy Now:
Count Unit price
1 $1.08
350 $0.87
700 $0.53
1400 $0.42
2800 $0.38
5000 $0.34

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

. in stock, ready to ship today.
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Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2 Tolerance (%) DCR (Ω) 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
MSS7331-152NL_ 1.5 30 0.0090 0.012 80.0 3.5 4.4 5.1 4.8 6.9
MSS7331-302NL_ 3.0 30 0.014 0.020 55.0 2.3 3.0 3.5 4.2 6.0
MSS7331-392NL_ 3.9 30 0.017 0.023 45.0 2.2 2.8 3.2 4.1 5.7
MSS7331-502ML_ 5.0 20 0.022 0.030 40.0 2.0 2.4 2.8 3.3 4.5
MSS7331-602ML_ 6.0 20 0.025 0.033 38.0 1.8 2.2 2.6 3.4 4.6
MSS7331-732ML_ 7.3 20 0.035 0.045 35.0 1.8 2.2 2.5 2.8 3.8
MSS7331-862ML_ 8.6 20 0.038 0.048 33.5 1.6 2.0 2.2 2.5 3.4
MSS7331-103ML_ 10 20 0.046 0.052 30.0 1.4 1.7 1.9 2.4 3.2
MSS7331-123ML_ 12 20 0.058 0.066 26.0 1.3 1.6 1.7 2.1 2.8
MSS7331-153ML_ 15 20 0.067 0.075 24.0 1.2 1.4 1.6 2.0 2.7
MSS7331-183ML_ 18 20 0.071 0.088 22.0 1.1 1.3 1.4 1.9 2.6
MSS7331-223ML_ 22 20 0.095 0.11 21.0 0.98 1.2 1.3 1.6 2.2
MSS7331-273ML_ 27 20 0.11 0.13 17.0 0.89 1.1 1.2 1.5 2.0
MSS7331-333ML_ 33 20 0.12 0.15 16.0 0.80 0.97 1.1 1.4 1.9
MSS7331-393ML_ 39 20 0.16 0.18 14.5 0.70 0.86 0.96 1.2 1.6
MSS7331-473ML_ 47 20 0.18 0.22 12.5 0.67 0.80 0.89 1.2 1.6
MSS7331-563ML_ 56 20 0.24 0.27 11.5 0.61 0.72 0.80 1.0 1.4
MSS7331-683ML_ 68 20 0.27 0.30 10.5 0.55 0.66 0.74 0.92 1.2
MSS7331-823ML_ 82 20 0.30 0.37 9.5 0.52 0.60 0.67 0.84 1.2
MSS7331-104ML_ 100 20 0.42 0.50 8.5 0.45 0.54 0.61 0.79 1.1
Notes
  1. When ordering, please specify termination and packaging codes: e.g. MSS7331-104MLC
  2. Inductance measured at 100 kHz, 0.1 Vrms using an Agilent/HP 4284A LCR meter or equivalent.
  3. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator
  4. For SRF >13 MHz, SRF measured using an Agilent/HP 8753D network Analyzer or equivalent. For SRF <13 MHz, SRF measured using an Agilent/HP 4192A or equilvalent. Details
  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 (current production) or gold over nickel over phos bronze (prior production).
  • T = RoHS tin-silver-copper (95.5/4/0.5) over gold over nickel over phos bronze. (Special order, added cost)
  • S = non-RoHS tin-lead (63/37) over gold over nickel over phos bronze. (Special order, added cost)

Packaging:

  • 7" reel, machine-ready EIA-481 embossed plastic tape (350 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel
    In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
  • 13" reel, machine-ready EIA-481 embossed plastic tape (1500 parts per full reel)
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C with (40°C rise) Irms current
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°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

mss7331d.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation ‡
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_q.gif
350 1500* 178/330 60/100 13 18,4 12,4 16 12 4 2 3,7 0,4
* Special order
‡ Part marking does not indicate polarity

General specification

Core Material:
Ferrite
Weight:
0.48 - 0.51g
Packaging:
350/7″ reel, 1500/13″ reel; Plastic tape: 16 mm wide, 0.40 mm thick, 12 mm pocket spacing, 3.7 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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