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MSS5121 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Shielded Power Inductors
Document 495-1
Shielded Power Inductors – MSS5121
• Low profile shielded power inductors
• Low DCR, excellent current handling and low cost
Designer’s Kit C411 contains 3 of each value
Core material Ferrite
Core and winding loss See www.coilcraft.com/coreloss
Terminations  RoHS compliant matte tin over nickel over phos
bronze (current production) or gold over nickel over phos bronze (prior
production). Other terminations available at additional cost.
Weight  141 – 147 mg
Ambient temperature  –40°C to +85°C with (40°C rise) Irms current.
Maximum part temperature  +125°C (ambient + temp rise). Derating.
Storage temperature  Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat  Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)  1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging  600/7″ reel, 2500/13″ reel;  Plastic tape:  12 mm wide,
0.35 mm thick, 8 mm pocket spacing, 3.25 mm pocket depth
PCB washing  Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
DCR SRF
  Isat (A)4     Irms (A)5
  Inductance2 max   typ3 10% 20% 30% 20°C 40°C
  Part number1 ±20% (µH) (Ohms) (MHz) drop drop drop rise rise
MSS5121-222ML_
MSS5121-332ML_
MSS5121-472ML_
MSS5121-562ML_
MSS5121-682ML_
2.2 0.050 120.0 1.86 2.10 2.30 2.1 2.9
3.3 0.070 90.0 1.62 1.84 2.00 1.7 2.3
4.7 0.095 80.0 1.38 1.54 1.66 1.4 1.9
5.6 0.100 73.0 1.28 1.42 1.54 1.3 1.8
6.8 0.110 65.0 1.10 1.28 1.38 1.2 1.6
MSS5121-822ML_ 8.2
MSS5121-103ML_ 10
MSS5121-123ML_ 12
MSS5121-153ML_ 15
MSS5121-183ML_ 18
0.135
0.160
0.190
0.280
0.300
55.0 1.06 1.22 1.32
47.0 0.98 1.08 1.18
41.0 0.87 0.99 1.05
37.0 0.76 0.85 0.90
35.0 0.71 0.81 0.87
1.1 1.5
0.99 1.3
0.91 1.2
0.82 1.1
0.75 1.0
MSS5121-223ML_ 22
MSS5121-273ML_ 27
MSS5121-333ML_ 33
MSS5121-393ML_ 39
MSS5121-473ML_ 47
0.330
0.420
0.480
0.530
0.750
32.0 0.68 0.77 0.82
27.0 0.61 0.69 0.74
25.0 0.58 0.64 0.67
23.0 0.48 0.54 0.58
22.0 0.44 0.51 0.54
0.71 0.97
0.63 0.85
0.56 0.76
0.55 0.73
0.46 0.63
MSS5121-563ML_ 56
MSS5121-683ML_ 68
MSS5121-823ML_ 82
MSS5121-104ML_ 100
MSS5121-124ML_ 120
0.860
1.00
1.20
1.40
1.60
19.0 0.40 0.46 0.49
18.0 0.37 0.42 0.46
15.0 0.35 0.40 0.42
13.5 0.28 0.32 0.35
12.0 0.26 0.30 0.32
0.44 0.60
0.41 0.56
0.35 0.47
0.33 0.44
0.31 0.42
MSS5121-154ML_ 150
MSS5121-184ML_ 180
MSS5121-224ML_ 220
MSS5121-274ML_ 270
MSS5121-334ML_ 330
2.10 9.0 0.26 0.29 0.31 0.29 0.38
2.31 8.5 0.21 0.25 0.27 0.25 0.34
3.10 7.5 0.21 0.24 0.25 0.22 0.29
3.50 7.0 0.18 0.20 0.22 0.20 0.27
4.00 6.5 0.17 0.19 0.20 0.19 0.26
MSS5121-394ML_ 390
5.00 5.8 0.15 0.17 0.19 0.15 0.21
1. Please specify termination and packaging codes:
MSS5121-394MLC
Termination:L = RoHS compliant matte tin over nickel
over phos bronze or gold over nickel
over phos bronze.
Special order:
T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
Packaging: C= 7″ machine-ready reel. EIA-481
embossed plastic tape (600 parts per
full reel).
B= Less than full reel. In tape, but not
machine ready.
To have a leader and trailer added
($25 charge), use code letter C
instead.
D= 13″ machine-ready reel. EIA-481
embossed plastic tape. Factory order
only, not stocked (2500 parts per full
reel).
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc
using Coilcraft SMD­‑A fixture in an Agilent/HP 4284A
impedance analyzer.
3. SRF measured using an Agilent/HP 8753D network
analyzer and a Coilcraft SMD­‑D test fixture.
4. DC current at 25°C that causes the specified induc-
tance drop from its value without current.
Click for temperature derating information.
5. Current that causes the specified temperature rise from
25°C ambient. This information is for reference only and
does not represent absolute maximum ratings.
Click for temperature derating information.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”
before soldering.
Document 495-1  Revised 09/02/15