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SLR1050 Series

High Current Shielded Power Inductors

RoHS compliant halogen free
Coilcraft’s SLR1050 Series of high-current shielded power inductors feature sub-milliohm DC resistance and very high current handling.  Magnetic shielding and tight DCR tolerances make them ideal for low voltage multi-phase VRM/VRD/EVRD regulators and current sensing circuits.
  • Tight DCR tolerance for inductor-DCR-based current sensing circuits
  • Three versions for optimal efficiency and accuracy
  • Ferrite construction for flat L vs I with high current
  • Magnetic shielding allows high-density packaging
  • Ideal for multi-phase VRM/VRD/EVRD regulators
Buy Now:
Count Unit price
1 $0.81
250 $0.65
500 $0.56
1000 $0.44
2500 $0.37
5000 $0.34

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:
Designer's Kit:
Kit Values Price
C467 40 (3 of each) $110.00

Specifications

Electrical specifications at 25°C.

Lowest DCR

Part number 1 Inductance (nH) 2
(Tolerance: ±10%)
DCR ± 7.7% (mΩ) 3 SRF typ (MHz) Isat (A) 4 Irms (A) 5
at 25°C at 100°C at 125°C 20°C rise 40°C rise
SLR1050A-850KE_ 85 0.39 210 86.0 68.0 60.5 56.7 77.1
SLR1050A-101KE_ 100 0.39 200 78.0 61.5 55.0 56.7 77.1
SLR1050A-121KE_ 120 0.39 180 65.0 51.0 48.0 56.7 77.1
SLR1050A-151KE_ 150 0.39 90 51.0 38.0 36.0 56.7 77.1
SLR1050A-221KE_ 220 0.39 65 35.0 25.5 23.5 56.7 77.1

Balanced DCR/tolerance

Part number 1 Inductance (nH) 2
(Tolerance: ±10%)
DCR ± 6.7% (mΩ) 3 SRF typ (MHz) Isat (A) 4 Irms (A) 5
at 25°C at 100°C at 125°C 20°C rise 40°C rise
SLR1050B-850KE_ 85 0.47 210 86.0 68.0 60.5 48.8 67.2
SLR1050B-101KE_ 100 0.47 200 78.0 61.5 55.0 48.8 67.2
SLR1050B-121KE_ 120 0.47 180 65.0 51.0 48.0 48.8 67.2
SLR1050B-151KE_ 150 0.47 90 51.0 38.0 36.0 48.8 67.2
SLR1050B-221KE_ 220 0.47 65 35.0 25.5 23.5 48.8 67.2

Tightest DCR tolerance

Part number 1 Inductance (nH) 2
(Tolerance: ±10%)
DCR ± 5.4% (mΩ) 3 SRF typ (MHz) Isat (A) 4 Irms (A) 5
at 25°C at 100°C at 125°C 20°C rise 40°C rise
SLR1050C-850KE_ 85 0.55 210 86.0 68.0 60.5 46.7 65.0
SLR1050C-101KE_ 100 0.55 200 78.0 61.5 55.0 46.7 65.0
SLR1050C-121KE_ 120 0.55 180 65.0 51.0 48.0 46.7 65.0
SLR1050C-151KE_ 150 0.55 90 51.0 38.0 36.0 46.7 65.0
SLR1050C-221KE_ 220 0.55 65 35.0 25.5 23.5 46.7 65.0
Notes
  1. When ordering, please specify packaging code: e.g. SLR1050C-221KEC
  2. Inductance tested at 100 kHz, 0.1 Vrms using an Agilent/HP 4284.
  3. DCR measured at 25°C on a micro-ohmmeter at the points indicated in the diagram. For other operating temperatures, use this DCR at Temperature calculator.
    dcr_points.gif
  4. Isat: DC current that causes a 20% (typ) inductance drop from its value without current. Temperature derating curves.
  5. Irms: Current that causes the specified temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.
    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.

Termination:

  • RoHS compliant matte tin over nickel over copper.

Packaging:

  • 7" reel, machine-ready 
    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).
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
–40°C to +85°C with Irms current
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332

Performance curves

Inductance vs. Current

Inductance vs. Frequency

Inductance vs. Current

Inductance vs. Frequency

Inductance vs. Current

Inductance vs. Frequency

Temperature Rise vs. Current

Physical characteristics

slr1050d.gif
dims_inches_mm.gif

Tape and Reel specification

tapereel_pl.gif


 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_aa.gif
250 1000* 330 100 13 30,4 24,4 24 12 4 2 5.03 0,4
* Special order

General specification

Core Material:
Ferrite
Weight:
1.2 – 1.4 g
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

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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