Coilcraft MSS1278T-272NL Smt power inductor Datasheet

Document 598-1
RE
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SMT Power Inductors – MSS1278T
• Designed for high ambient temperatures
• Very low DCR, excellent current handling
• Magnetic shielding for high density mounting
Designer’s Kit C419 contains 3 of each value
Core material Ferrite
Terminations RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight: 3.8 g – 4.6 g
Ambient temperature –40°C to +125°C with Irms current, +125°C
to +165°C with derated current
Storage temperature Component: –40°C to +165°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 500/13″ reel; Plastic tape: 24 mm wide, 0.4 mm thick,
16 mm pocket spacing, 8.1 mm pocket depth
PCB washing Only pure water or alcohol recommended
DCR3
SRF
(mOhms)
Inductance2
typ4
Part number1
(µH)
typ
max (MHz)
MSS1278T-102NL_
1.0 ±30%
6.3
7.0 115
MSS1278T-142NL_
1.4 ±30%
8.8
9.8
85
MSS1278T-222NL_
2.2 ±30%
9.4
10.5
60
MSS1278T-272NL_
2.7 ±30% 10.1
11.3
40
MSS1278T-392NL_
3.9 ±30% 11.7
13.0
35
MSS1278T-472ML_
4.7 ±20% 13.9
15.5
33
MSS1278T-562ML_
5.6 ±20% 15.7
17.5
30
MSS1278T-682ML_
6.8 ±20% 19.1
21.3
23
MSS1278T-822ML_
8.2 ±20% 20.3
22.6
20
MSS1278T-103ML_ 10 ±20%
21.8
24.3
17
MSS1278T-123ML_ 12 ±20%
23.2
25.8
15
MSS1278T-153ML_ 15 ±20%
27.9
31.0
13
MSS1278T-183ML_ 18 ±20%
30.8
34.3
12
MSS1278T-223ML_ 22 ±20%
35.5
39.5
11
MSS1278T-273ML_ 27 ±20%
45.0
50.0
10
MSS1278T-333ML_ 33 ±20%
61.9
68.8
9.5
MSS1278T-393ML_ 39 ±20%
69.1
76.8
8.5
MSS1278T-473ML_ 47 ±20%
72.3
80.4
7.5
MSS1278T-563ML_ 56 ±20%
80.2
89.2
7.0
MSS1278T-683ML_ 68 ±20%
91.3 101.5
6.5
MSS1278T-823ML_ 82 ±20%
125.9 139.9
5.0
MSS1278T-104ML_ 100 ±20%
135.1 150.2
4.5
MSS1278T-124KL_ 120 ±10%
182.3 202.6
4.3
MSS1278T-154KL_ 150 ±10%
216.5 240.6
4.1
MSS1278T-184KL_ 180 ±10%
229.0 254.5
4.0
MSS1278T-224KL_ 220 ±10%
323.6 359.6
3.4
MSS1278T-274KL_ 270 ±10%
415.6 461.8
3.1
MSS1278T-334KL_ 330 ±10%
487.3 541.5
2.9
MSS1278T-394KL_ 390 ±10%
533.6 592.9
2.7
MSS1278T-474KL_ 470 ±10%
707.5 786.2
2.2
MSS1278T-564KL_ 560 ±10%
777.4 863.8
2.0
MSS1278T-684KL_ 680 ±10% 1045 1162
1.7
MSS1278T-824KL_ 820 ±10% 1166 1296
1.4
MSS1278T-105KL_ 1000 ±10% 1334 1482
1.3
Isat (A)5
Irms (A)6
10% 20% 30% 20°C 40°C
drop drop drop rise rise
31.84 35.04 36.84 7.1 10.1
25.04 27.76 29.52 6.8 9.8
22.56 24.80 25.96 6.3 9.2
18.76 20.72 22.04 6.1 8.6
16.52 18.24 19.20 5.7 7.7
15.30 16.90 17.76 4.3 6.2
13.38 14.86 15.74 4.3 6.2
12.10 13.56 14.20 4.2 6.0
11.38 12.60 13.28 4.1 5.9
10.62 11.82 12.48 4.0 5.7
8.90 9.88 10.44 3.7 5.2
8.36 9.32 9.94 3.5 4.9
8.00 8.88 9.36 3.0 4.5
7.08 7.88 8.34 2.9 4.0
6.32 7.08 7.54 2.6 3.6
5.96 6.56 6.98 2.3 3.1
5.38 5.94 6.28 2.1 3.0
4.76 5.40 5.66 2.0 2.9
4.40 4.98 5.30 1.9 2.7
3.92 4.46 4.74 1.8 2.6
3.66 4.08 4.38 1.6 2.3
3.12 3.56 3.78 1.5 2.2
3.02 3.36 3.58 1.4 1.9
2.60 2.94 3.10 1.3 1.8
2.36 2.68 2.84 1.2 1.7
2.24 2.50 2.62 1.0 1.6
1.94 2.18 2.34 0.90 1.2
1.72 1.92 2.06 0.80 1.0
1.62 1.82 1.92 0.75 1.0
1.44 1.64 1.74 0.66 0.90
1.40 1.54 1.66 0.60 0.80
1.24 1.32 1.46 0.55 0.75
1.14 1.28 1.42 0.50 0.70
0.982 1.08 1.18 0.48 0.68
1. Please specify termination and packaging codes:
MSS1278T-105KLD
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
(500 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 tested at 100 kHz, 0.1 Vrms, 0 Adc
using 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 the
specified amount 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 598-1
Revised 10/20/08
Document 598-2
URE
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SMT Power Inductors – MSS1278T Series
Typical L vs Frequency
Typical L vs Current
10000
10000
1000 µH
100 µH
100
1000 µH
1000
Inductance (µH)
Inductance (µH)
1000
10 µH
10
1 µH
1
100 µH
100
10 µH
10
1 µH
1
0.1
0.1
0.01
1
0.1
10
0.1
10
1
100
Current (A)
Frequency (MHz)
Current Derating
0.472 ±0.012
12,0 ±0,3
120
0.472 ±0.012
12,0 ±0,3
100
90
123
X
Dash number
Internal code
80
70
60
50
0.307 ±0.01
7,80 ±0,25
40
25°C
Percent of rated Current
110
30
20
Recommended
Land Pattern
Isat
Irms
10
0
-40 -20
0
0.217
5,5
0.197 ±0.008
5,0 ±0,2
20
40
60
80
100
120
Ambient temperature (°C)
140
160 180
0.157
4,0
0.138 ±0.016
3,5 ±0,4
0.197 ±0.016
5,0 ±0,4
Dimensions are in
inches
mm
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
0.334
8,5
Document 598-2
Revised 10/20/08
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