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Document 598-1
High Temp Power Inductors MSS1278T
• Designed for high ambient temperatures
• Magnetic shielding, very low DCR, excellent current handling
AEC
+
Q200 125°C
Designer’s Kit C419 contains 3 of each value
Core material Ferrite
Core and winding loss See www.coilcraft.com/coreloss
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 (40°C rise) Irms current.
Maximum part temperature +165°C (ambient + temp rise). Derating.
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)
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 to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
DCR3
Isat (A)5
Irms (A)6
1. Please specify termination and packaging codes:
SRF
(mOhms)
Inductance2
(µH)
typ4 10% 20% 30% 20°C 40°C
MSS1278T-105KLD
Termination:L = RoHS compliant matte tin over
nickel over phos bronze.
Part number1
typ
6.3
8.8
max (MHz) drop drop drop rise rise
MSS1278T-102NL_
MSS1278T-142NL_
MSS1278T-222NL_
MSS1278T-272NL_
MSS1278T-392NL_
1.0 30%
1.4 30%
2.2 30%
7.0 115
9.8 85
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
Special order:
T = RoHS tin-silver-copper
(95.5/4/0.5) or S = non-RoHS
tin-lead (63/37).
9.4 10.5 60
2.7 30% 10.1 11.3 40
3.9 30% 11.7 13.0 35
Packaging: D= 13″ machine-ready reel. EIA-481
embossed plastic tape (500 parts
per full reel). Quantities less than
full reel available: in tape (not
MSS1278T-472ML_
MSS1278T-562ML_
MSS1278T-682ML_
MSS1278T-822ML_
4.7 20% 13.9 15.5 33
5.6 20% 15.7 17.5 30
6.8 20% 19.1 21.3 23
8.2 20% 20.3 22.6 20
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
machine ready) or with leader
and trailer ($25 charge).
MSS1278T-103ML_ 10 20%
21.8 24.3 17
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% 125.9 139.9
MSS1278T-104ML_ 100 20% 135.1 150.2
MSS1278T-124KL_ 120 10% 182.3 202.6
MSS1278T-154KL_ 150 10% 216.5 240.6
MSS1278T-184KL_ 180 10% 229.0 254.5
MSS1278T-224KL_ 220 10% 323.6 359.6
MSS1278T-274KL_ 270 10% 415.6 461.8
MSS1278T-334KL_ 330 10% 487.3 541.5
MSS1278T-394KL_ 390 10% 533.6 592.9
MSS1278T-474KL_ 470 10% 707.5 786.2
23.2 25.8 15
27.9 31.0 13
30.8 34.3 12
35.5 39.5 11
45.0 50.0 10
B= Less than full reel. In an effort
to simplify our part numbering
system, Coilcraft is eliminating
the need for multiple packaging
codes. When ordering, simply
change the last letter of your
part number from B to D.
61.9 68.8
69.1 76.8
72.3 80.4
80.2 89.2
91.3 101.5
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
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 25°C that causes the specified
inductance drop from its value without current.
Click for temperature derating information.
6. Current that causes the specified temperature
rise from 25°C ambient.This information is for
reference only and does not represent absolute
maximum ratings.
Click for temperature derating information.
7. Electrical specifications at 25°C.
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
MSS1278T-684KL_ 680 10% 1045 1162
MSS1278T-824KL_ 820 10% 1166 1296
MSS1278T-105KL_ 1000 10% 1334 1482
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
Refer to Doc 362 “Soldering Surface Mount
Components” before soldering.
Document 598-1 Revised 01/28/22
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
© Coilcraft Inc. 2022
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.
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