Document 540-1
Shielded Power Inductors MSS1246T
Designed for high ambient temperatures
Magnetic shielding allows high density mounting.
Designers Kit C417 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: 2.3 g 2.5 g
Ambient temperature 40C to +125C with (40C rise) Irms current.
Maximum part temperature +165C (ambient + temp rise). Derating.
Storage temperature Component: 40C to +165C.
Tape and reel packaging: 40C to +80C
Resistance to soldering heat Max three 40 second reflows at
+260C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C /
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 200/7 reel; 800/13 reel; Plastic tape: 24 mm wide,
0.35 mm thick, 16 mm pocket spacing, 4.7 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
3 5 6
1. Please specify termination and packaging codes:
DCR Isat (A) Irms (A)
SRF
(mOhms)
2 4
Inductance typ 10% 20% 30% 20C 40C
MSS1246T-105KLD
1
Part number (H) typ max (MHz) drop drop drop rise rise
Termination: L = RoHS compliant matte tin over
MSS1246T-102ML_ 1.0 20% 5.6 6.3 100 18.14 20.64 22.24 6.00 8.00
nickel over phos bronze.
MSS1246T-152ML_ 1.5 20% 8.7 9.7 85.0 14.06 15.90 17.08 5.80 7.80
Special order:
MSS1246T-272ML_ 2.7 20% 10.3 11.5 70.0 11.66 13.16 14.16 5.00 6.80
T = RoHS tin-silver-copper
MSS1246T-332ML_ 3.3 20% 15.1 16.8 65.0 9.74 11.08 11.98 4.50 6.30 (95.5/4/0.5) or S = non-RoHS
MSS1246T-472ML_ 4.7 20% 19.1 21.3 42.0 8.62 9.70 10.42 4.40 6.00 tin-lead (63/37).
Packaging: C = 7 machine-ready reel. EIA-481
MSS1246T-562ML_ 5.6 20% 22.1 24.6 37.0 7.62 8.74 9.44 3.95 5.75
embossed plastic tape (200 parts
MSS1246T-682ML_ 6.8 20% 24.9 27.7 33.0 7.38 8.36 9.00 3.70 5.20
per full reel).
MSS1246T-822ML_ 8.2 20% 27.4 30.5 31.0 6.84 7.70 8.32 3.35 4.67
B = Less than full reel. In tape, but not
MSS1246T-103ML_ 10 20% 36.8 40.9 27.0 5.88 6.66 7.18 2.85 3.90
machine ready.
MSS1246T-123ML_ 12 20% 38.9 43.3 24.0 5.34 6.04 6.52 2.69 3.65
To have a leader and trailer
MSS1246T-153ML_ 15 20% 48.6 54.1 22.0 4.68 5.36 5.78 2.50 3.40
added ($25 charge), use code
MSS1246T-183ML_ 18 20% 51.0 56.7 19.0 4.32 4.92 5.32 2.41 3.19
letter C instead.
MSS1246T-223ML_ 22 20% 60.3 67.0 18.0 3.84 4.34 4.75 2.30 3.14
D = 13 machine-ready reel. EIA-481
MSS1246T-273ML_ 27 20% 67.5 75.0 16.0 3.54 4.02 4.32 2.06 2.86 embossed plastic tape (800 parts
per full reel).
MSS1246T-333ML_ 33 20% 81.7 90.8 15.0 3.24 3.66 3.96 1.90 2.60
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc
MSS1246T-393ML_ 39 20% 95.2 105.8 13.3 3.04 3.46 3.72 1.73 2.39
using a Coilcraft SMD -A fixture in an Agilent/
MSS1246T-473ML_ 47 20% 120.6 134.0 12.0 2.70 3.08 3.34 1.50 2.10
HP 4263B LCR meter or equivalent.
MSS1246T-563ML_ 56 20% 133.8 148.7 10.6 2.46 2.80 3.02 1.44 2.01
3. DCR measured on a micro-ohmmeter and a
MSS1246T-683ML_ 68 20% 167.3 185.9 9.7 2.26 2.54 2.74 1.30 1.80
Coilcraft CCF858 test fixture.
MSS1246T-823ML_ 82 20% 188.5 209.5 8.8 1.98 2.26 2.46 1.24 1.72
4. SRF measured using an Agilent/HP 8753D
MSS1246T-104ML_ 100 20% 216.8 240.9 8.0 1.84 2.08 2.24 1.19 1.65
network analyzer and a Coilcraft SMD- D test
MSS1246T-124KL_ 120 10% 287.2 319.2 7.2 1.62 1.86 2.04 1.03 1.42
fixture.
MSS1246T-154KL_ 150 10% 326.7 363.0 6.6 1.48 1.70 1.82 0.95 1.30
5. DC current at 25C that causes the specified
MSS1246T-184KL_ 180 10% 379.5 421.7 5.9 1.36 1.56 1.68 0.89 1.21
inductance drop from its value without current.
MSS1246T-224KL_ 220 10% 488.2 542.5 5.3 1.22 1.38 1.50 0.76 1.00
Click for temperature derating information.
MSS1246T-274KL_ 270 10% 560.1 622.4 4.7 1.12 1.26 1.36 0.72 0.95 6. Current that causes the specified temperature
MSS1246T-334KL_ 330 10% 731.4 812.7 4.1 1.00 1.10 1.20 0.65 0.87 rise from 25C ambient. This information is for
reference only and does not represent absolute
MSS1246T-394KL_ 390 10% 813.7 904.2 3.8 0.946 1.00 1.10 0.59 0.79
maximum ratings.
MSS1246T-474KL_ 470 10% 935.1 1039 3.5 0.864 0.978 1.00 0.56 0.76
Click for temperature derating information.
MSS1246T-564KL_ 560 10% 1193 1326 3.0 0.776 0.884 0.956 0.50 0.67
7. Electrical specifications at 25C.
MSS1246T-684KL_ 680 10% 1370 1523 2.8 0.720 0.818 0.882 0.46 0.62
Refer to Doc 362 Soldering Surface Mount
MSS1246T-824KL_ 820 10% 1590 1767 2.6 0.634 0.728 0.792 0.43 0.58
Components before soldering.
MSS1246T-105KL_ 1000 10% 2090 2323 2.4 0.594 0.676 0.728 0.36 0.50
Document 540-1 Revised 09/03/15
HIGH TEMPERATUREDocument 540-2
Shielded Power Inductors MSS1246T
Typical L vs Frequency Typical L vs Current
10000
10000
1000 H
1000 H
1000
1000
100 H
100 H
100
100
10 H
10 H
10
10
1 H 1 H
1
1
0.1
0.1
0.01 0.1 1 10
0.1 1 10 100
Frequency (MHz)
Current (A)
inches
Dimensions are in
mm
Document 540-2 Revised 09/03/15
HIGH TEMPERATURE
Inductance (H)
Inductance (H)