ERATURE
HIGH TEMP
Document 598-1
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.
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
500/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick,
16 mm pocket spacing, 8.7 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other
solvents, see Doc787_PCB_Washing.pdf.
DCR
3
SRF
Inductance
2
(mOhms)
typ
4
1
Part number
(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.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 598-1
Revised 04/04/13
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Analogue and Mixed Signal
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