Document 1255-1
Shielded Power Inductors
–
SLR1050
• Tight DCR tolerance for inductor-DCR-based current sensing
circuits
• Three versions for optimal efficiency and accuracy
• Excellent current handling
• 10.2 × 7.0 × 4.95 mm surface mount package
• Designed for use in multi-phase VRM/VRD/EVRD regulators
Core material Ferrite
Weight 1.2 – 1.4 g
Environmental RoHS compliant, halogen free
Terminations RoHS compliant matte tin over nickel over copper.
Ambient temperature –40°C to +85°C with Irms current
Maximum part temperature +125°C (ambient + temp rise). Derating.
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 250/7″ reel; 1000/13″ reel; Plastic tape: 24 mm wide,
0.4 mm thick, 12 mm pocket spacing, 5.03 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Isat (A)3
at 25°C at 100°C at 125°C
Irms (A)4
20°C rise 40°C rise
Inductance2
10ꢀ (nꢁ)
DCR
(mOhms)
SRF typ
(Mꢁz)
Part number1
Lowest DCR
SLR1050A-850KE_
SLR1050A-101KE_
SLR1050A-121KE_
SLR1050A-151KE_
SLR1050A-221KE_
85
100
120
150
220
0.39 7.7%
0.39 7.7%
0.39 7.7%
0.39 7.7%
0.39 7.7%
210
200
180
90
86
78
65
51
35
68.0
61.5
51.0
38.0
25.5
60.5
55.0
48.0
36.0
23.5
56.7
56.7
56.7
56.7
56.7
77.1
77.1
77.1
77.1
77.1
65
Balanced DCR/tolerance
SLR1050B-850KE_
SLR1050B-101KE_
SLR1050B-121KE_
SLR1050B-151KE_
SLR1050B-221KE_
85
100
120
150
220
0.47 6.7%
0.47 6.7%
0.47 6.7%
0.47 6.7%
0.47 6.7%
210
200
180
90
86
78
65
51
35
68.0
61.5
51.0
38.0
25.5
60.5
55.0
48.0
36.0
23.5
48.8
48.8
48.8
48.8
48.8
67.2
67.2
67.2
67.2
67.2
65
Tightest DCR tolerance
SLR1050C-850KE_
SLR1050C-101KE_
SLR1050C-121KE_
SLR1050C-151KE_
SLR1050C-221KE_
85
100
120
150
220
0.55 5.4%
0.55 5.4%
0.55 5.4%
0.55 5.4%
0.55 5.4%
210
200
180
90
86
78
65
51
35
68.0
61.5
51.0
38.0
25.5
60.5
55.0
48.0
36.0
23.5
46.7
46.7
46.7
46.7
46.7
65.0
65.0
65.0
65.0
65.0
65
1. When ordering, please specify version and packaging codes:
SLR1050C-221KEC
4. 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.
5. Electrical specifications at 25°C.
Version
A = Lowest DCR; B = Balanced DCR/DCR tol;
C = Tightest DCR tolerance
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (250 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 C instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (1000 parts
per full reel).
Irms Testing
Irms testing was performed on 0.75 inch wide × 0.25 inch thick
copper traces in still air.
Temperature rise is highly dependent on many factors including
pcb land pattern, trace size, and proximity to other components.
Therefore temperature rise should be verified in application
conditions.
2. Inductance at 100 kHz, 0.1 Vrms, 0 Adc.
3. DC current at 25°C that causes an inductance drop of 20% (typ) from
its value without current. Click for temperature derating information.
Document 1255-1 Revised 02/09/16
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. 2016
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.
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