US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest infor
mation.
Document 598-1
Document 598-1 Revised 09/03/15
High Temp Power Inductors
MSS1278T
DCR3 SRF Isat (A)5 Irms (A)6
Inductance2
(mOhms) typ4 10% 20% 30% 20°C 40°C
Part number1 (µH) typ max (MHz) drop drop drop rise rise
MSS1278T-102NL_ 1.0 ±30% 6.3 7.0 115 31.84 35.04 36.84 7.1 10.1
MSS1278T-142NL_ 1.4 ±30% 8.8 9.8 85 25.04 27.76 29.52 6.8 9.8
MSS1278T-222NL_ 2.2 ±30% 9.4 10.5 60 22.56 24.80 25.96 6.3 9.2
MSS1278T-272NL_ 2.7 ±30% 10.1 11.3 40 18.76 20.72 22.04 6.1 8.6
MSS1278T-392NL_ 3.9 ±30% 11.7 13.0 35 16.52 18.24 19.20 5.7 7.7
MSS1278T-472ML_ 4.7 ±20% 13.9 15.5 33 15.30 16.90 17.76 4.3 6.2
MSS1278T-562ML_ 5.6 ±20% 15.7 17.5 30 13.38 14.86 15.74 4.3 6.2
MSS1278T-682ML_ 6.8 ±20% 19.1 21.3 23 12.10 13.56 14.20 4.2 6.0
MSS1278T-822ML_ 8.2 ±20% 20.3 22.6 20 11.38 12.60 13.28 4.1 5.9
MSS1278T-103ML_ 10 ±20% 21.8 24.3 17 10.62 11.82 12.48 4.0 5.7
MSS1278T-123ML_ 12 ±20% 23.2 25.8 15 8.90 9.88 10.44 3.7 5.2
MSS1278T-153ML_ 15 ±20% 27.9 31.0 13 8.36 9.32 9.94 3.5 4.9
MSS1278T-183ML_ 18 ±20% 30.8 34.3 12 8.00 8.88 9.36 3.0 4.5
MSS1278T-223ML_ 22 ±20% 35.5 39.5 11 7.08 7.88 8.34 2.9 4.0
MSS1278T-273ML_ 27 ±20% 45.0 50.0 10 6.32 7.08 7.54 2.6 3.6
MSS1278T-333ML_ 33 ±20% 61.9 68.8 9.5 5.96 6.56 6.98 2.3 3.1
MSS1278T-393ML_ 39 ±20% 69.1 76.8 8.5 5.38 5.94 6.28 2.1 3.0
MSS1278T-473ML_ 47 ±20% 72.3 80.4 7.5 4.76 5.40 5.66 2.0 2.9
MSS1278T-563ML_ 56 ±20% 80.2 89.2 7.0 4.40 4.98 5.30 1.9 2.7
MSS1278T-683ML_ 68 ±20% 91.3 101.5 6.5 3.92 4.46 4.74 1.8 2.6
MSS1278T-823ML_ 82 ±20% 125.9 139.9 5.0 3.66 4.08 4.38 1.6 2.3
MSS1278T-104ML_ 100 ±20% 135.1 150.2 4.5 3.12 3.56 3.78 1.5 2.2
MSS1278T-124KL_ 120 ±10% 182.3 202.6 4.3 3.02 3.36 3.58 1.4 1.9
MSS1278T-154KL_ 150 ±10% 216.5 240.6 4.1 2.60 2.94 3.10 1.3 1.8
MSS1278T-184KL_ 180 ±10% 229.0 254.5 4.0 2.36 2.68 2.84 1.2 1.7
MSS1278T-224KL_ 220 ±10% 323.6 359.6 3.4 2.24 2.50 2.62 1.0 1.6
MSS1278T-274KL_ 270 ±10% 415.6 461.8 3.1 1.94 2.18 2.34 0.90 1.2
MSS1278T-334KL_ 330 ±10% 487.3 541.5 2.9 1.72 1.92 2.06 0.80 1.0
MSS1278T-394KL_ 390 ±10% 533.6 592.9 2.7 1.62 1.82 1.92 0.75 1.0
MSS1278T-474KL_ 470 ±10% 707.5 786.2 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
MSS1278T-684KL_ 680 ±10% 1045 1162 1.7 1.24 1.32 1.46 0.55 0.75
MSS1278T-824KL_ 820 ±10% 1166 1296 1.4 1.14 1.28 1.42 0.50 0.70
MSS1278T-105KL_ 1000 ±10% 1334 1482 1.3 0.982 1.08 1.18 0.48 0.68
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)
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 to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
• Designed for high ambient temperatures
• Magnetic shielding, very low DCR, excellent current handling
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 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.
Refer to Doc 362 “Soldering Surface Mount
Components” before soldering.
Sample
& buy
Support
& FAQ
Web
page
Tools &
softw
are
US
UK
Taiwan
China
Singapore
+1-847-639-6400 sales@coilcraft.com
+44-1236-730595 sales@coilcraft-europe.com
+886-2-2264 3646 sales@coilcraft.com.tw
+86-21-6218 8074 sales@coilcraft.com.cn
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft appr
oval.
Specification subject to change without notice.
Please check web site for latest information.
HIGH TEMPERA
TURE
Document 598-2
Document 598-2 Revised 09/03/15
SMT Power Inductors
–
MSS1278T Series
0.1
1
10
100
1000
10000
0.1 1
100
10
Inductance (µH)
Current (A)
100 µH
10 µH
1 µH
1000 µH
Typical L vs Frequency Typical L vs Current
0.01 0.1
10
1
Inductance (µH)
Frequency (MHz)
0.1
1
10
100
1000
10000
100 µH
10 µH
1 µH
1000 µH
Dimensions are in inches
mm
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Coilcraft:
MSS1278T-124KLD MSS1278T-474KLB MSS1278T-684KLD MSS1278T-563MLD MSS1278T-473MLD
MSS1278T-823MLD MSS1278T-273MLD MSS1278T-102NLB MSS1278T-334KLB MSS1278T-274KLB MSS1278T-
562MLB MSS1278T-183MLB MSS1278T-153MLD MSS1278T-154KLD MSS1278T-103MLD MSS1278T-224KLB
MSS1278T-683MLB MSS1278T-682MLB MSS1278T-333MLB MSS1278T-223MLD MSS1278T-392NLD MSS1278T-
824KLB MSS1278T-124KLB MSS1278T-103MLB MSS1278T-184KLD MSS1278T-142NLD MSS1278T-272NLB
MSS1278T-392NLB MSS1278T-822MLD MSS1278T-682MLD MSS1278T-272NLD MSS1278T-564KLD MSS1278T-
683MLD MSS1278T-393MLB MSS1278T-822MLB MSS1278T-274KLD MSS1278T-105KLD MSS1278T-123MLD
MSS1278T-564KLB MSS1278T-394KLD MSS1278T-104MLD MSS1278T-562MLD MSS1278T-333MLD MSS1278T-
223MLB MSS1278T-824KLD MSS1278T-224KLD MSS1278T-334KLD MSS1278T-142NLB MSS1278T-273MLB
MSS1278T-474KLD MSS1278T-184KLB MSS1278T-394KLB MSS1278T-105KLB MSS1278T-823MLB MSS1278T-
183MLD MSS1278T-222NLB MSS1278T-563MLB MSS1278T-684KLB MSS1278T-153MLB MSS1278T-473MLB
MSS1278T-104MLB MSS1278T-472MLB MSS1278T-102NLD MSS1278T-222NLD MSS1278T-123MLB MSS1278T-
472MLD MSS1278T-393MLD MSS1278T-154KLB
