MSS1278-822MLB Datasheet, PDF (1/2 Pages) Coilcraft lnc. – SMT Power Inductors -– MSS1278

Document 322-1
SMT Power Inductors – MSS1278
• 12.3 × 12.3 mm footprint; 8 mm high shielded inductors
• Low DCR and excellent current handling
Designer’s Kit C380 contains 3 each of all values.
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 – 4.6 g
Ambient temperature  –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
Storage temperature  Component: –40°C to +125°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 with pure water or alcohol only. For other
solvents, see Doc787_PCB_Washing.pdf.


  _{Part number}1
  _{Inductan ce }2^   ^    ^{ (m DOChRm3}s )
(µH)
typ max
MSS1278-142ML_    1.4 ±20% 8.8 9.8
MSS1278-472ML_    4.7 ±20% 13.9 15.5
MSS1278-562ML_    5.6 ±20% 15.7 17.5
MSS1278-682ML_    6.8 ±20% 19.1 21.3
MSS1278-822ML_    8.2 ±20% 20.3 22.6
MSS1278-103ML_   10 ±20%
MSS1278-123ML_   12 ±20%
MSS1278-153ML_   15 ±20%
MSS1278-183ML_   18 ±20%
MSS1278-223ML_   22 ±20%
21.8 24.3
23.2 25.8
27.9 31.0
30.8 34.3
35.5 39.5
MSS1278-273ML_   27 ±20%
MSS1278-333ML_   33 ±20%
MSS1278-393ML_   39 ±20%
MSS1278-473ML_   47 ±20%
MSS1278-563ML_   56 ±20%
45.0 50.0
61.9 68.8
69.1 76.8
72.3 80.4
80.2 89.2
MSS1278-683ML_   68 ±20%
MSS1278-823ML_   82 ±20%
MSS1278-104ML_  100 ±20%
MSS1278-124KL_  120 ±10%
MSS1278-154KL_  150 ±10%
91.3
125.9
135.1
182.3
216.5
101.5
139.9
150.2
202.6
240.6
MSS1278-184KL_  180 ±10%
MSS1278-224KL_  220 ±10%
MSS1278-274KL_  270 ±10%
MSS1278-334KL_  330 ±10%
MSS1278-394KL_  390 ±10%
229.0
323.6
415.6
487.3
533.6
254.5
359.6
461.8
541.5
592.9
MSS1278-474KL_  470 ±10%
MSS1278-564KL_  560 ±10%
MSS1278-684KL_  680 ±10%
MSS1278-824KL_  820 ±10%
MSS1278-105KL_ 1000 ±10%
707.5 786.2
777.4 863.8
1045 1162
1166 1296
1334 1483
SRF
  _{Isat (A)}5 _{   Irms (A)}6
  _typ4 _{10% 20% 30% 20°C 40°C}
(MHz) drop drop drop rise rise
80.0 25.2 28.6 30.6
30.0 13.7 15.2 15.9
24.0 12.2 13.7 14.6
21.0 11.3 12.7 13.7
20.0 10.1 11.5 12.3
7.00 10.00
4.30 6.20
4.30 6.20
4.20 6.00
4.10 5.90
17.0 9.36 10.6 11.2 4.00 5.70
15.0 8.84 10.0 10.7 3.70 5.20
13.0 7.30 8.36 9.00 3.50 4.90
12.0 6.10 7.10 7.74 3.00 4.50
11.0 6.04 6.78 7.24 2.90 4.00
10.0 5.80 6.56 7.02 2.60 3.60
9.5 5.22 5.90 6.30 2.30 3.10
8.5 4.68 5.42 5.80 2.10 3.00
7.5 4.40 5.02 5.32 2.00 2.90
7.0 4.02 4.60 4.90 1.90 2.70
6.5 3.40 3.86 4.26 1.80 2.60
5.0 3.12 3.58 3.80 1.60 2.30
4.5 2.88 3.28 3.52 1.50 2.20
4.3 2.62 3.00 3.24 1.40 1.90
4.1 2.48 2.86 3.02 1.30 1.80
4.0 2.26 2.58 2.74 1.20 1.70
3.4 1.96 2.22 2.36 1.00 1.60
3.1 1.74 2.04 2.18 0.90 1.20
2.9 1.66 1.86 2.00 0.80 1.00
2.7 1.52 1.72 1.88 0.75 1.00
2.2 1.34 1.54 1.64 0.66 0.90
2.0 1.24 1.42 1.50 0.60 0.80
1.7 1.16 1.28 1.38 0.55 0.75
1.4 1.04 1.16 1.26 0.50 0.70
1.3 0.97 1.10 1.14 0.48 0.68
1. Please specify termination and packaging codes:
MSS1278-105KLD
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 us-
ing 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 4191A or
equivalent.
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.
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 322-1  Revised 04/04/13
© Coilcraft Inc. 2013
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.