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Document 1511-1
High Temp Power Inductors MSS1278H
Halogen
Free
• Designed for high ambient temperatures
• Magnetic shielding, very low DCR, excellent current handling
• AEC-Q200 Grade 1 (–40°C to +125°C)
Core material Ferrite
Core and winding loss See www.coilcraft.com/coreloss
Environmental RoHS Compliant, halogen free
Terminations RoHS compliant matte tin over nickel over phos
bronze. Other terminations available at additional cost.
AEC
+
Q200 125°C
Weight: 3.8 g – 4.6 g
Operating voltage 400 V max
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 /
85ꢀ 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 code:
SRF
(mOhms)
Inductance2
(µH)
typ4 10% 20% 30% 20°C 40°C
MSS1278H-105KED
Part number1
typ max (MHz) drop drop drop rise rise
Termination:E = RoHS compliant matte tin over
nickel over phos bronze.
MSS1278H-821M_D 0.82 20ꢀ
MSS1278H-142M_D 1.4 20ꢀ
MSS1278H-202M_D 2.0 20ꢀ
MSS1278H-272M_D 2.7 20ꢀ
MSS1278H-392M_D 3.9 20ꢀ
3.7
4.6
5.1
5.7
7.0
4.5 107
5.6 77
6.2 60
7.0 49
8.6 41
26.5 29.0 31.0 7.50 10.50
21.0 23.0 24.5 7.50 10.50
17.6 21.2 24.0 7.00 10.00
14.9 16.7 18.0 6.20 8.80
12.9 14.4 15.5 6.20 8.60
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). Quantities less than
full reel available: in tape (not
machine ready) or with leader
and trailer ($25 charge).
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.
MSS1278H-472M_D 4.7 20ꢀ
MSS1278H-602M_D 6.0 20ꢀ
MSS1278H-722M_D 7.2 20ꢀ
MSS1278H-872M_D 8.7 20ꢀ
MSS1278H-103M_D 10 20ꢀ
MSS1278H-123M_D 12 20ꢀ
MSS1278H-153M_D 15 20ꢀ
MSS1278H-183M_D 18 20ꢀ
MSS1278H-223M_D 22 20ꢀ
MSS1278H-273M_D 27 20ꢀ
MSS1278H-333M_D 33 20ꢀ
MSS1278H-393M_D 39 20ꢀ
MSS1278H-473K_D 47 10ꢀ
MSS1278H-563K_D 56 10ꢀ
MSS1278H-683K_D 68 10ꢀ
MSS1278H-823K_D 82 10ꢀ
MSS1278H-104K_D 100 10ꢀ
MSS1278H-124K_D 120 10ꢀ
MSS1278H-154K_D 150 10ꢀ
7.8
9.4 33
11.4 12.7 13.7 5.30 7.40
10.0 11.3 12.2 5.00 7.20
9.2 10.3 11.1 4.40 6.00
10.0 12.0 27
10.6 12.8 24
13.5 16.3 22
15.0 18.0 20
16.0 19.2 18
17.0 20.4 17
22.0 26.5 14
25.0 30.0 12
34.0 41.0 10
38.0 45.0
44.0 53.0
48.0 57.0
61.0 73.0
68.0 83.0
8.3
7.6
9.3 10.0 4.30 5.80
8.4
9.2 4.20 5.60
7.0
6.5
5.7
5.1
4.6
7.9
7.3
6.5
5.8
5.2
8.5 3.80 5.40
7.9 3.60 5.10
7.0 3.40 4.80
6.2 3.00 4.30
5.6 2.80 3.90
9.5 4.2
8.5 3.8
7.5 3.6
7.0 3.3
6.5 3.0
4.7
4.3
4.0
3.7
3.3
5.1 2.70 3.80
4.7 2.60 3.70
4.4 2.30 3.20
4.0 2.20 3.10
3.6 2.00 2.70
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.
89.0 108
5.5 2.7
5.0 2.4
4.5 2.2
3.9 2.0
3.6 1.8
3.1
2.8
2.5
2.2
2.0
3.3 1.80 2.40
3.0 1.70 2.30
2.7 1.60 2.20
2.4 1.30 1.80
2.2 1.20 1.70
101
113
155
121
132
181
208
MSS1278H-184K_D 180 10ꢀ 174
Refer to Doc 362 “Soldering Surface Mount
Components” before soldering.
MSS1278H-224K_D 220 10ꢀ
MSS1278H-274K_D 270 10ꢀ
MSS1278H-334K_D 330 10ꢀ
MSS1278H-394K_D 390 10ꢀ
225
257
291
379
270
305
350
450
500
3.5 1.6
3.3 1.5
2.9 1.3
2.4 1.2
2.3 1.1
1.9
1.7
1.5
1.4
1.3
2.0 1.05 1.45
1.8 1.00 1.40
1.6 0.92 1.30
1.5 0.85 1.15
1.4 0.80 1.10
MSS1278H-474K_D 470 10ꢀ 430
MSS1278H-564K_D 560 10ꢀ
MSS1278H-684K_D 680 10ꢀ
MSS1278H-824K_D 820 10ꢀ
562
633
721
660
760
840
1.9 1.0
1.7 0.92 1.0
1.7 0.84 0.97 1.0 0.60 0.80
1.4 0.76 0.87 0.94 0.54 0.74
1.2
1.3 0.66 0.90
1.1 0.63 0.85
MSS1278H-105K_D 1000 10ꢀ 970 1150
Document 1511-1 Revised 07/06/22
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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