Web
pageSample& buyTools &software

Support& FAQ

Document 598-1

High Temp Power Inductors MSS1278T
AEC

Q200 +125°C• Designed for high ambient temperatures• Magnetic shielding, very low DCR, excellent current handling
Designer’s Kit C419 contains 3 of each valueCore material FerriteCore 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 additionalaqueous wash. See Doc787_PCB_Washing.pdf.
DCR3 		Isat (A)5		   Irms (A)6		
      SRF2    (mOhms)
4		
Inductancetyp 10% 20% 30% 20°C 40°C
Part number1(µH)
typmax (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 8525.04 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 4018.76 20.72 22.04 6.1 8.6MSS1278T-392NL_	   3.9 ±30% 11.7 13.0 35
16.52 18.24 19.20 5.7 7.7MSS1278T-472ML_	   4.7 ±20% 13.9 15.5 33
15.30 16.90 17.76 4.3 6.2MSS1278T-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 2312.10 13.56 14.20 4.2 6.0MSS1278T-822ML_	   8.2 ±20% 20.3 22.6 20
11.38 12.60 13.28 4.1 5.9MSS1278T-103ML_	  10 ±20%21.8 24.3 1710.62 11.82 12.48 4.0 5.7MSS1278T-123ML_	  12 ±20%23.2 25.8 15
8.90 9.88 10.44 3.7 5.2MSS1278T-153ML_	  15 ±20%27.9 31.0 13
8.36 9.32 9.94 3.5 4.9MSS1278T-183ML_	  18 ±20%30.8 34.3 128.00 8.88 9.36 3.0 4.5MSS1278T-223ML_	  22 ±20%35.5 39.5 117.08 7.88 8.34 2.9 4.0MSS1278T-273ML_	  27 ±20%45.0 50.0 106.32 7.08 7.54 2.6 3.6MSS1278T-333ML_	  33 ±20%61.9 68.8
9.5 5.96 6.56 6.98 2.3 3.1MSS1278T-393ML_	  39 ±20%69.1 76.8
8.5 5.38 5.94 6.28 2.1 3.0MSS1278T-473ML_	  47 ±20%72.3 80.4
7.5 4.76 5.40 5.66 2.0 2.9MSS1278T-563ML_	  56 ±20%80.2 89.2
7.0 4.40 4.98 5.30 1.9 2.7MSS1278T-683ML_	  68 ±20%91.3 101.5
6.5 3.92 4.46 4.74 1.8 2.6MSS1278T-823ML_	  82 ±20% 125.9 139.9
5.0 3.66 4.08 4.38 1.6 2.3MSS1278T-104ML_	 100 ±20% 135.1 150.2
4.5 3.12 3.56 3.78 1.5 2.2MSS1278T-124KL_	 120 ±10% 182.3 202.6
4.3 3.02 3.36 3.58 1.4 1.9MSS1278T-154KL_	 150 ±10% 216.5 240.6
4.1 2.60 2.94 3.10 1.3 1.8MSS1278T-184KL_	 180 ±10% 229.0 254.5
4.0 2.36 2.68 2.84 1.2 1.7MSS1278T-224KL_	 220 ±10% 323.6 359.6
3.4 2.24 2.50 2.62 1.0 1.6MSS1278T-274KL_	  270 ±10% 415.6 461.8
3.1 1.94 2.18 2.34 0.90 1.2MSS1278T-334KL_	  330 ±10% 487.3 541.5
2.9 1.72 1.92 2.06 0.80 1.0MSS1278T-394KL_	  390 ±10% 533.6 592.9
2.7 1.62 1.82 1.92 0.75 1.0MSS1278T-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

1. Please specify termination and packaging codes:
MSS1278T-105KLDTermination: L = RoHS compliant matte tin overnickel 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). Quantities less thanfull reel available: in tape (notmachine ready) or with leader
and trailer ($25 charge).
B = Less than full reel. In an effort
to simplify our part numberingsystem, Coilcraft is eliminating
the need for multiple packaging
codes. When ordering, simply
change the last letter of yourpart number from B to D.
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 aCoilcraft 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 temperaturerise from 25°C ambient. This information is forreference only and does not represent absolutemaximum ratings.
Click for temperature derating information.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface MountComponents” before soldering.

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

Document 598-1

Revised 01/28/22© Coilcraft Inc. 2022
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 598-2

URETA
REPMETHIGH
SMT Power Inductors – MSS1278T Series
Typical L vs Current

10000

10000
1000 µH

100 µH

10010 µH

101 µH

10.10.1

100 µH

10010 µH

101 µH

10.10.01

1000 µH

1000

Inductance (µH)

1000

Inductance (µH)

AEC

Q200 +125°C

Typical L vs Frequency

1

100.1

Frequency (MHz)Dimensions are in

10

100

Document 598-2

Revised 01/28/22

1Current (A)inchesmm

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 highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.