Document 1255-1
Shielded PowerInductors – 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.
Part number1
Inductance2 ±10% (nH)
Lowest DCR SLR1050A-850KE_ SLR1050A-101KE_ SLR1050A-121KE_ SLR1050A-151KE_ SLR1050A-221KE_
85 100 120 150 220
Balanced DCR/tolerance SLR1050B-850KE_ SLR1050B-101KE_ SLR1050B-121KE_ SLR1050B-151KE_ SLR1050B-221KE_
85 100 120 150 220
Tightest DCR tolerance SLR1050C-850KE_ SLR1050C-101KE_ SLR1050C-121KE_ SLR1050C-151KE_ SLR1050C-221KE_
85 100 120 150 220
DCR (mOhms)
SRF typ (MHz)
Isat (A)3 at 25°C at 100°C at 125°C
Irms (A)4 20°C rise 40°C rise
0.39 ±7.7% 210 0.39 ±7.7% 200 0.39 ±7.7% 180 0.39 ±7.7% 90 0.39 ±7.7% 65
86 68.0 60.5 78 61.5 55.0 65 51.0 48.0 51 38.0 36.0 35 25.5 23.5
56.7 77.1 56.7 77.1 56.7 77.1 56.7 77.1 56.7 77.1
0.47 ±6.7% 210 0.47 ±6.7% 200 0.47 ±6.7% 180 0.47 ±6.7% 90 0.47 ±6.7% 65
86 68.0 60.5 78 61.5 55.0 65 51.0 48.0 51 38.0 36.0 35 25.5 23.5
48.8 67.2 48.8 67.2 48.8 67.2 48.8 67.2 48.8 67.2
0.55 ±5.4% 210 0.55 ±5.4% 200 0.55 ±5.4% 180 0.55 ±5.4% 90 0.55 ±5.4% 65
86 68.0 60.5 78 61.5 55.0 65 51.0 48.0 51 38.0 36.0 35 25.5 23.5
46.7 65.0 46.7 65.0 46.7 65.0 46.7 65.0 46.7 65.0
1. When ordering, please specify version and packaging codes:
SLR1050C -221KEC Version A = Lowest DCR; B = Balanced DCR / DCR tol;
C = Tightest DCR tolerance 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). 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.
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. Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
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.
US +1-847-639-6400
[email protected] UK +44-1236-730595
[email protected] Taiwan +886-2-2264 3646
[email protected] China +86-21-6218 8074
[email protected] Singapore + 65-6484 8412
[email protected]
Document 1255-1 Revised 02/09/16
© 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.
Document 1255-2
SLR1050 Shielded Power Inductors
L vs Current
1000 SLR1050A
L vs Frequency
1000 SLR1050A
Inductance (nH)
Inductance (nH)
220 nH
150 nH
100
120 nH 100 nH
85 nH
10 1
1000 SLR1050B
10 100
Current (A)
100 220 nH 150 nH 120 nH 100 nH 85 nH
1000
10 0.1
1 10
Frequency (MHz)
1000 SLR1050B
100
Inductance (nH)
Inductance (nH)
220 nH
150 nH
100
120 nH 100 nH
85 nH
10 1
1000 SLR1050C
10 100
Current (A)
100 220 nH 150 nH 120 nH 100 nH 85 nH
1000
10 0.1
1 10
Frequency (MHz)
1000 SLR1050C
100
Inductance (nH)
Inductance (nH)
100 10 1
220 nH 150 nH 120 nH 100 nH 85 nH
100 220 nH 150 nH 120 nH 100 nH 85 nH
10 100
Current (A)
1000
10 0.1
1 10
Frequency (MHz)
100
US +1-847-639-6400
[email protected] UK +44-1236-730595 sal.