Document 598-1
TURE
HIGH TEMPERA
SMT Power Inductors
–
MSS1278T
• Designed for high ambient temperatures
• Very low DCR, excellent current handling
• Magnetic shielding allows high density mounting.
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: –55°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 /
85ꢀ relative humidity)
Mean Time Between Failures (MTBF) 26,315,789 hours
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
Isat (A)5
Irms (A)6
1. Please specify termination and packaging codes:
MSS1278T-105KLD
SRF
(mOhms)
typ
Inductance2
(µH)
typ4 10% 20% 30% 20°C 40°C
(MHz) drop drop drop rise rise
Partnumber1
max
Termination: L = RoHS compliant matte tin over
nickel over phos bronze.
MSS1278T-102NL_
MSS1278T-142NL_
MSS1278T-222NL_
MSS1278T-272NL_
MSS1278T-392NL_
MSS1278T-472ML_
MSS1278T-562ML_
MSS1278T-682ML_
MSS1278T-822ML_
1.0 30ꢀ
1.4 30ꢀ
2.2 30ꢀ
6.3
8.8
9.4
7.0 115
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
9.8
85
60
40
35
33
30
23
20
17
15
13
12
11
10
Special order:
10.5
11.3
13.0
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
2.7 30ꢀ 10.1
3.9 30ꢀ 11.7
4.7 20ꢀ 13.9
5.6 20ꢀ 15.7
6.8 20ꢀ 19.1
8.2 20ꢀ 20.3
15.5
17.5
21.3
22.6
24.3
(500 parts per full reel).
B= Less than full reel. In tape, but
not machine ready.
MSS1278T-103ML_ 10 20ꢀ
21.8
To have a leader and trailer
added ($25 charge), use code
letter D instead.
MSS1278T-123ML_ 12 20ꢀ
MSS1278T-153ML_ 15 20ꢀ
MSS1278T-183ML_ 18 20ꢀ
MSS1278T-223ML_ 22 20ꢀ
MSS1278T-273ML_ 27 20ꢀ
MSS1278T-333ML_ 33 20ꢀ
MSS1278T-393ML_ 39 20ꢀ
MSS1278T-473ML_ 47 20ꢀ
MSS1278T-563ML_ 56 20ꢀ
MSS1278T-683ML_ 68 20ꢀ
MSS1278T-823ML_ 82 20ꢀ
MSS1278T-104ML_ 100 20ꢀ
MSS1278T-124KL_ 120 10ꢀ
MSS1278T-154KL_ 150 10ꢀ
MSS1278T-184KL_ 180 10ꢀ
MSS1278T-224KL_ 220 10ꢀ
MSS1278T-274KL_ 270 10ꢀ
MSS1278T-334KL_ 330 10ꢀ
MSS1278T-394KL_ 390 10ꢀ
MSS1278T-474KL_ 470 10ꢀ
23.2
27.9
30.8
35.5
45.0
25.8
31.0
34.3
39.5
50.0
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.
See Qualification Standards section for environmental
and test data.
Refer to Doc 362 “Soldering Surface Mount
Components” before soldering.
61.9
69.1
72.3
80.2
68.8
76.8
80.4
89.2
9.5 5.96 6.56 6.98 2.3 3.1
8.5 5.38 5.94 6.28 2.1 3.0
7.5 4.76 5.40 5.66 2.0 2.9
7.0 4.40 4.98 5.30 1.9 2.7
6.5 3.92 4.46 4.74 1.8 2.6
5.0 3.66 4.08 4.38 1.6 2.3
4.5 3.12 3.56 3.78 1.5 2.2
4.3 3.02 3.36 3.58 1.4 1.9
4.1 2.60 2.94 3.10 1.3 1.8
4.0 2.36 2.68 2.84 1.2 1.7
3.4 2.24 2.50 2.62 1.0 1.6
3.1 1.94 2.18 2.34 0.90 1.2
2.9 1.72 1.92 2.06 0.80 1.0
2.7 1.62 1.82 1.92 0.75 1.0
2.2 1.44 1.64 1.74 0.66 0.90
91.3 101.5
125.9 139.9
135.1 150.2
182.3 202.6
216.5 240.6
229.0 254.5
323.6 359.6
415.6 461.8
487.3 541.5
533.6 592.9
707.5 786.2
MSS1278T-564KL_ 560 10ꢀ
777.4 863.8
2.0 1.40 1.54 1.66 0.60 0.80
1.7 1.24 1.32 1.46 0.55 0.75
1.4 1.14 1.28 1.42 0.50 0.70
1.3 0.982 1.08 1.18 0.48 0.68
MSS1278T-684KL_ 680 10ꢀ 1045 1162
MSS1278T-824KL_ 820 10ꢀ 1166 1296
MSS1278T-105KL_ 1000 10ꢀ 1334 1482
Specifications subject to change without notice.
Please check our website for latest information.
Document598-1 Revised02/07/08
© Coilcraft, Inc. 2007
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