Document 495-1
SMT Power Inductors – Series 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
Terminations
RoHS compliant gold over nickel over phos bronze.
Other terminations available at additional cost.
Weight
141 – 147 mg
Ambient temperature
–40°C to +85°C with
Irms
current, +85°C to
+125°C with derated current
Storage temperature
Component: –40°C to +125°C.
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)
Mean Time Between Failures (MTBF)
26,315,789 hours
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
Only pure water or alcohol recommended
Part number
1
MSS5121-222ML_
MSS5121-332ML_
MSS5121-472ML_
MSS5121-562ML_
MSS5121-682ML_
MSS5121-822ML_
MSS5121-103ML_
MSS5121-123ML_
MSS5121-153ML_
MSS5121-183ML_
MSS5121-223ML_
MSS5121-273ML_
MSS5121-333ML_
MSS5121-393ML_
MSS5121-473ML_
MSS5121-563ML_
MSS5121-683ML_
MSS5121-823ML_
MSS5121-104ML_
MSS5121-124ML_
MSS5121-154ML_
MSS5121-184ML_
MSS5121-224ML_
MSS5121-274ML_
MSS5121-334ML_
MSS5121-394ML_
DCR
Inductance
2
max
±20% (µH) (Ohms)
2.2
0.050
3.3
0.070
4.7
0.095
5.6
0.100
6.8
0.110
8.2
0.135
10
0.160
12
0.190
15
0.280
18
0.300
22
0.330
27
0.420
33
0.480
39
0.530
47
0.750
56
0.860
68
1.00
82
1.20
100
1.40
120
1.60
150
2.10
180
2.31
220
3.10
270
3.50
330
4.00
390
5.00
SRF
typ
3
(MHz)
120.0
90.0
80.0
73.0
65.0
55.0
47.0
41.0
37.0
35.0
32.0
27.0
25.0
23.0
22.0
19.0
18.0
15.0
13.5
12.0
9.0
8.5
7.5
7.0
6.5
5.8
Isat
(A)
4
10% 20% 30%
drop drop drop
1.86 2.10 2.30
1.62 1.84 2.00
1.38 1.54 1.66
1.28 1.42 1.54
1.10 1.28 1.38
1.06 1.22 1.32
0.98 1.08 1.18
0.87 0.99 1.05
0.76 0.85 0.90
0.71 0.81 0.87
0.68 0.77 0.82
0.61 0.69 0.74
0.58 0.64 0.67
0.48 0.54 0.58
0.44 0.51 0.54
0.40 0.46 0.49
0.37 0.42 0.46
0.35 0.40 0.42
0.28 0.32 0.35
0.26 0.30 0.32
0.26 0.29 0.31
0.21 0.25 0.27
0.21 0.24 0.25
0.18 0.20 0.22
0.17 0.19 0.20
0.15 0.17 0.19
Irms
(A)
5
20°C 40°C
rise rise
2.1
2.9
1.7
2.3
1.4
1.9
1.3
1.8
1.2
1.6
1.1
1.5
0.99 1.3
0.91 1.2
0.82 1.1
0.75 1.0
0.71 0.97
0.63 0.85
0.56 0.76
0.55 0.73
0.46 0.63
0.44 0.60
0.41 0.56
0.35 0.47
0.33 0.44
0.31 0.42
0.29 0.38
0.25 0.34
0.22 0.29
0.20 0.27
0.19 0.26
0.15 0.21
1. Please specify
termination
and
packaging
codes:
MSS5121-394MLC
Termination: L
= RoHS compliant 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 which the inductance drops the specified
amount from its value without current.
5. Current that causes the specified temperature rise for
25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”
before soldering.
Specifications subject to change without notice.
Please check our website for latest information.
Document 495-1
Revised 02/13/09
© Coilcraft, Inc. 2009
Document 495-2
SMT Power Inductors – Series MSS5121
Typical L vs Current
1000
390 µH
120 µH
Typical L vs Frequency
1000
390 µH
Inductance (µH)
Inductance (µH)
100
120 µH
47 µH
18 µH
100
47 µH
18 µH
10
6.8 µH
2.2 µH
10
6.8 µH
2.2 µH
1
1
0.1
0.01
0.1
1
10
0.1
0.1
1
10
100
Current (A)
Frequency (MHz)
Current Derating
120
110
0.200 ±0.012
5,1 ±0,3
Percent of rated current
100
90
80
70
60
50
40
123
0.200 ±0.012
5,1 ±0,3
0.083
max
2,2
25°C
30
20
10
0
-40
-20
Isat
Irms
0
20
0.181
4,6
0.069
1,74
0.200
5,08
40
60
80
100
120 140
Ambient temperature (°C)
0.063 0.181
1,6
4,6
0.131
3,34
Dimensions are in
inches
mm
Recommended
Land Pattern
Specifications subject to change without notice.
Please check our website for latest information.
Document 495-2
Revised 02/13/09
© Coilcraft, Inc. 2009
