Coilcraft MSS1278T Smt power inductor Datasheet

Document 598-1
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SMT Power Inductors – MSS1278T
• Designed for high ambient temperatures
• Magnetic shielding, very low DCR, excellent current handling
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.
DCR3 SRF
2 (mOhms)
Inductance
typ4
1
Part number
(µH)
typ
max (MHz)
MSS1278T-102NL_ 1.0 ±30%
6.3
7.0 115
MSS1278T-142NL_ 1.4 ±30%
8.8
9.8 85
MSS1278T-222NL_ 2.2 ±30%
9.4 10.5 60
MSS1278T-272NL_ 2.7 ±30% 10.1 11.3 40
MSS1278T-392NL_ 3.9 ±30% 11.7 13.0 35
MSS1278T-472ML_ 4.7 ±20% 13.9 15.5 33
MSS1278T-562ML_ 5.6 ±20% 15.7 17.5 30
MSS1278T-682ML_ 6.8 ±20% 19.1 21.3 23
MSS1278T-822ML_ 8.2 ±20% 20.3 22.6 20
MSS1278T-103ML_ 10 ±20%
21.8 24.3 17
MSS1278T-123ML_ 12 ±20%
23.2 25.8 15
MSS1278T-153ML_ 15 ±20%
27.9 31.0 13
MSS1278T-183ML_ 18 ±20%
30.8 34.3 12
MSS1278T-223ML_ 22 ±20%
35.5 39.5 11
MSS1278T-273ML_ 27 ±20%
45.0 50.0 10
MSS1278T-333ML_ 33 ±20%
61.9 68.8
9.5
MSS1278T-393ML_ 39 ±20%
69.1 76.8
8.5
MSS1278T-473ML_ 47 ±20%
72.3 80.4
7.5
MSS1278T-563ML_ 56 ±20%
80.2 89.2
7.0
MSS1278T-683ML_ 68 ±20%
91.3 101.5
6.5
MSS1278T-823ML_ 82 ±20% 125.9 139.9
5.0
MSS1278T-104ML_ 100 ±20% 135.1 150.2
4.5
MSS1278T-124KL_ 120 ±10% 182.3 202.6
4.3
MSS1278T-154KL_ 150 ±10% 216.5 240.6
4.1
MSS1278T-184KL_ 180 ±10% 229.0 254.5
4.0
MSS1278T-224KL_ 220 ±10% 323.6 359.6
3.4
MSS1278T-274KL_ 270 ±10% 415.6 461.8
3.1
MSS1278T-334KL_ 330 ±10% 487.3 541.5
2.9
MSS1278T-394KL_ 390 ±10% 533.6 592.9
2.7
MSS1278T-474KL_ 470 ±10% 707.5 786.2
2.2
MSS1278T-564KL_ 560 ±10% 777.4 863.8
2.0
MSS1278T-684KL_ 680 ±10% 1045 1162
1.7
MSS1278T-824KL_ 820 ±10% 1166 1296
1.4
MSS1278T-105KL_ 1000 ±10% 1334 1482
1.3
Isat (A)5 Irms (A)6
10% 20% 30% 20°C 40°C
drop drop drop rise rise
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
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
5.96 6.56 6.98 2.3 3.1
5.38 5.94 6.28 2.1 3.0
4.76 5.40 5.66 2.0 2.9
4.40 4.98 5.30 1.9 2.7
3.92 4.46 4.74 1.8 2.6
3.66 4.08 4.38 1.6 2.3
3.12 3.56 3.78 1.5 2.2
3.02 3.36 3.58 1.4 1.9
2.60 2.94 3.10 1.3 1.8
2.36 2.68 2.84 1.2 1.7
2.24 2.50 2.62 1.0 1.6
1.94 2.18 2.34 0.90 1.2
1.72 1.92 2.06 0.80 1.0
1.62 1.82 1.92 0.75 1.0
1.44 1.64 1.74 0.66 0.90
1.40 1.54 1.66 0.60 0.80
1.24 1.32 1.46 0.55 0.75
1.14 1.28 1.42 0.50 0.70
0.982 1.08 1.18 0.48 0.68
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.
Document 598-1
Revised 09/03/15
Document 598-2
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SMT Power Inductors – MSS1278T Series
Typical L vs Frequency
Typical L vs Current
10000
10000
1000 µH
100 µH
100
10 µH
10
1 µH
1
0.1
0.01
0.1
100 µH
100
10 µH
10
1 µH
1
1
Frequency (MHz)
Dimensions are in
1000 µH
1000
Inductance (µH)
Inductance (µH)
1000
10
0.1
0.1
10
1
100
Current (A)
inches
mm
Document 598-2
Revised 09/03/15
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