Document 598-1
TURE
HIGH TEMPERA
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
Isat (A)5
Irms (A)6
1. Please specify termination and packaging codes:
SRF
(mOhms)
typ
Inductance2
(µH)
typ4 10% 20% 30% 20°C 40°C
MSS1278T-105KLD
Partnumber1
max (MHz) drop drop drop rise rise
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±30%
1.4±30%
2.2±30%
2.7±30% 10.1
3.9±30% 11.7
4.7±20% 13.9
5.6±20% 15.7
6.8±20% 19.1
8.2±20% 20.3
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
10.5
11.3
13.0
85
60
40
35
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
15.5
17.5
21.3
22.6
24.3
33
30
23
20
17
(500 parts per full reel).
B= Less than full reel. In tape, but
not machine ready.
MSS1278T-103ML_ 10±20%
21.8
To have a leader and trailer
added ($25 charge), use code
letter D instead.
MSS1278T-123ML_ 12±20%
MSS1278T-153ML_ 15±20%
MSS1278T-183ML_ 18±20%
MSS1278T-223ML_ 22±20%
MSS1278T-273ML_ 27±20%
MSS1278T-333ML_ 33±20%
MSS1278T-393ML_ 39±20%
MSS1278T-473ML_ 47±20%
MSS1278T-563ML_ 56±20%
MSS1278T-683ML_ 68±20%
MSS1278T-823ML_ 82±20%
MSS1278T-104ML_ 100±20%
MSS1278T-124KL_ 120±10%
MSS1278T-154KL_ 150±10%
MSS1278T-184KL_ 180±10%
MSS1278T-224KL_ 220±10%
MSS1278T-274KL_ 270±10%
MSS1278T-334KL_ 330±10%
MSS1278T-394KL_ 390±10%
MSS1278T-474KL_ 470±10%
23.2
27.9
30.8
35.5
45.0
61.9
69.1
72.3
80.2
25.8
31.0
34.3
39.5
50.0
15
13
12
11
10
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.
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
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
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
MSS1278T-564KL_ 560±10%
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±10% 1045 1162
MSS1278T-824KL_ 820±10% 1166 1296
MSS1278T-105KL_ 1000±10% 1334 1482
Specifications subject to change without notice.
Please check our website for latest information.
Document598-1 Revised10/20/08
© Coilcraft, Inc. 2009
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