COILCRAFT MSS1246

Document 471-1
SMT Power Inductors – MSS1246
• 12 × 12 mm footprint; 4.6 mm high shielded inductors
• Very low DCR and excellent current handling
Designer’s Kit C410 contains 3 each of all values.
Core material Ferrite
Terminations RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight: 2.3 g – 2.5 g
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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 200/7″ reel; 800/13″ reel; Plastic tape: 24 mm wide,
0.35 mm thick, 16 mm pocket spacing, 4.7 mm pocket depth
PCB washing Only pure water or alcohol recommended
Part number1
Inductance2
(µH)
MSS1246-472ML_
4.7 ±20%
MSS1246-562ML_
5.6 ±20%
MSS1246-682ML_
6.8 ±20%
MSS1246-822ML_
8.2 ±20%
MSS1246-103ML_
10 ±20%
MSS1246-123ML_
12 ±20%
MSS1246-153ML_
15 ±20%
MSS1246-183ML_
18 ±20%
MSS1246-223ML_
22 ±20%
MSS1246-273ML_
27 ±20%
MSS1246-333ML_
33 ±20%
MSS1246-393ML_
39 ±20%
MSS1246-473ML_
47 ±20%
MSS1246-563ML_
56 ±20%
MSS1246-683ML_
68 ±20%
MSS1246-823ML_
82 ±20%
MSS1246-104ML_ 100 ±20%
MSS1246-124KL_ 120 ±10%
MSS1246-154KL_ 150 ±10%
MSS1246-184KL_ 180 ±10%
MSS1246-224KL_ 220 ±10%
MSS1246-274KL_ 270 ±10%
MSS1246-334KL_ 330 ±10%
MSS1246-394KL_ 390 ±10%
MSS1246-474KL_ 470 ±10%
MSS1246-564KL_ 560 ±10%
MSS1246-684KL_ 680 ±10%
MSS1246-824KL_ 820 ±10%
MSS1246-105KL_ 1000 ±10%
DCR3
(mOhms)
typ
max
19.1
22.1
24.9
27.4
36.8
38.9
48.6
51.0
60.3
67.5
81.7
95.2
120.6
133.8
167.3
188.5
216.8
287.2
326.7
379.5
488.2
560.1
731.4
813.7
935.1
1193
1370
1590
2090
21.3
24.6
27.7
30.5
40.9
43.3
54.1
56.7
67.0
75.0
90.8
105.8
134.0
148.7
185.9
209.5
240.9
319.2
363.0
421.7
542.5
622.4
812.7
904.2
1039
1326
1523
1767
2323
Isat (A)5
Irms (A)6
SRF
typ4 10% 20% 30% 20°C 40°C
(MHz) drop drop drop rise rise
42
37
33
31
27
24
22
19.0
18.0
16.0
15.0
13.3
12.0
10.6
9.7
8.8
8.0
7.2
6.6
5.9
5.3
4.7
4.1
3.8
3.5
3.0
2.8
2.6
2.4
8.52
7.64
6.52
5.98
5.72
5.02
4.58
4.28
3.76
3.46
3.14
2.72
2.66
2.34
2.10
1.80
1.64
1.62
1.36
1.34
1.18
1.04
1.00
0.91
0.81
0.76
0.68
0.61
0.56
9.42
8.66
7.34
6.80
6.44
5.76
5.24
4.78
4.24
3.92
3.54
3.14
3.06
2.64
2.40
2.06
1.86
1.82
1.58
1.48
1.30
1.18
1.10
1.00
0.92
0.85
0.77
0.70
0.63
9.86
9.28
7.82
7.34
6.84
6.22
5.54
5.14
4.50
4.18
3.78
3.38
3.24
2.80
2.56
2.24
2.04
1.92
1.70
1.60
1.40
1.24
1.20
1.08
0.98
0.90
0.82
0.75
0.68
4.50
4.19
3.80
3.55
3.30
3.00
2.85
2.71
2.50
2.16
1.90
1.73
1.50
1.44
1.30
1.24
1.20
1.03
0.95
0.89
0.76
0.72
0.65
0.59
0.56
0.50
0.46
0.43
0.36
6.00
5.75
5.20
4.87
4.20
3.95
3.80
3.52
3.40
2.96
2.60
2.39
2.10
2.01
1.80
1.72
1.60
1.42
1.30
1.21
1.00
0.95
0.87
0.79
0.76
0.67
0.62
0.58
0.50
1. Please specify termination and packaging codes:
MSS1246-105MLC
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: C=7″ machine-ready reel. EIA-481
embossed plastic tape
(200 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
(800 parts per full reel).
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. DCR measured on a micro-ohmmeter and a
Coilcraft CCF858 test fixture.
4. SRF measured using an Agilent/HP 8753D
network analyzer and a Coilcraft SMD-D test
fixture.
5. DC current at which the inductance drops 10%
(max) from its value without current.
6. Current that causes the specified temperature rise
from 25°C ambient.
7. 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.
© Coilcraft, Inc. 2009
Document 471-1 Revised 10/15/08
Document 471-2
SMT Power Inductors – MSS1246
Typical L vs Current
Typical L vs Frequency
10000
10000
470 µH
180 µH
100
1000 µH
1000
1000 µH
Inductance (µH)
Inductance (µH)
1000
68 µH
27 µH
10
470 µH
180 µH
100
68 µH
27 µH
10 µH
4.7 µH
10
10 µH
4.7 µH
1
1
0.1
10
1
100
0.01
10
Frequency (MHz)
Current Derating
0.472 ±0.012
12,0 ±0,30
120
110
0.472 ±0.012
12,0 ±0,30
100
90
123
X
Dash number
Internal code
Parts manufactured prior
to Sept. 2007 were marked
with only the dash number.
80
70
60
0.181 ±0.008
4,6 ±0,20
50
40
30
20
25°C
Percent of rated current
1
0.1
Current (A)
Isat
Irms
10
0
-40
-20
0
20
40
60
80
Ambient temperature (°C)
100
0.157
4,0
0.138
3,5
120 140
0.197
5,0
inches
Dimensions are in
mm
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
0.217
5,5
0.197
5,0
0.335
8,5
Recommended
Land Pattern
Document 471-2 Revised 10/15/08