Document 329 -1
SMT Power Inductors – MSS4020
• 4 × 4 mm footprint; 2 mm high shielded inductors
• Low DCR and excellent current handling
Designer’s Kit C381
contains 3 each of all values.
Core material
Ferrite
Core and winding loss
See www.coilcraft.com/coreloss
Terminations
RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight:
81.0 – 87.8 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
2000/13″ reel; Plastic tape: 12 mm wide, 0.3 mm thick,
8 mm pocket spacing, 2.2 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Part number
1
MSS4020-332ML_
MSS4020-472ML_
MSS4020-562ML_
MSS4020-682ML_
MSS4020-822ML_
MSS4020-103ML_
MSS4020-123ML_
MSS4020-153ML_
MSS4020-183ML_
MSS4020-223ML_
MSS4020-273ML_
MSS4020-333ML_
MSS4020-393ML_
MSS4020-473ML_
MSS4020-563ML_
MSS4020-683ML_
MSS4020-823ML_
MSS4020-104ML_
Inductance
2
±20% (µH)
3.3
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
DCR max
(Ohms)
0.085
0.115
0.130
0.175
0.190
0.210
0.280
0.330
0.360
0.480
0.560
0.620
0.820
0.930
1.200
1.330
1.500
2.100
SRF typ
3
(MHz)
109.0
93.0
85.0
75.0
70.0
63.0
55.0
50.0
42.0
38.0
35.0
28.0
30.0
28.0
22.0
18.0
17.0
15.0
10% drop
0.94
0.73
0.70
0.65
0.61
0.50
0.47
0.45
0.40
0.39
0.30
0.29
0.28
0.25
0.23
0.20
0.18
0.15
(A)
4
20% drop
1.10
0.87
0.82
0.76
0.71
0.60
0.55
0.53
0.47
0.45
0.36
0.34
0.32
0.28
0.27
0.24
0.21
0.18
2
Isat
30% drop
1.20
0.95
0.89
0.83
0.77
0.67
0.60
0.58
0.52
0.49
0.39
0.38
0.36
0.31
0.29
0.26
0.23
0.20
Irms
(A)
5
20°C rise 40°C rise
1.25
1.60
1.10
1.50
1.05
1.40
0.96
1.30
0.89
1.20
0.86
1.15
0.75
1.00
0.71
0.95
0.67
0.85
0.60
0.80
0.54
0.71
0.50
0.67
0.44
0.58
0.42
0.56
0.35
0.47
0.32
0.43
0.30
0.40
0.27
0.36
1. When ordering, please specify
termination
and
packaging
codes:
MSS4020-104MLD
Termination: L
= RoHS compliant matte tin 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: D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (2000 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 D instead.
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using a Coilcraft
SMD-A fixture in an Agilent/HP 4263B LCR meter or equivalent.
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 from 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 329-1
Revised 10/20/08
© Coilcraft, Inc. 2009
Electronics Design Contest
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