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SD43 Series

Surface Mount Power Inductors

RoHS compliant
Coilcraft SD43 Series unshielded surface-mount power inductors are mechanically rugged and affordably priced. They offer high current ratings and low DC resistance for  greater efficiency.
  • Open magnetic path design
  • Cost-effective solution
  • Ferrite core construction
  • High saturation current ratings and low DCR
Buy Now:
Count Unit price
1 $0.97
250 $0.72
500 $0.44
1000 $0.34
2500 $0.29
5000 $0.27

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

. in stock, ready to ship today.
Request a Sample:

Specifications

Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2 Tolerance (%) DCR max (mΩ) 3 SRF typ (MHz) 4 Isat (A) 5 Irms (A) 6
10% drop 20% drop 30% drop 20°C rise 40°C rise
SD43-102ML_ 1.0 20 33.0 100 5.5 6.1 6.5 3.4 5.8
SD43-142ML_ 1.4 20 38.0 90.0 4.8 5.5 5.9 3.1 5.8
SD43-182ML_ 1.8 20 42.0 80.0 4.1 4.6 5.1 2.7 4.6
SD43-222ML_ 2.2 20 47.0 65.0 3.6 4.1 4.4 2.3 3.8
SD43-272ML_ 2.7 20 52.0 60.0 3.4 3.8 4.1 2.2 3.7
SD43-332ML_ 3.3 20 58.0 50.0 2.9 3.3 3.5 2.1 3.3
SD43-392ML_ 3.9 20 76.0 47.0 2.6 3.0 3.2 1.9 3.0
SD43-472ML_ 4.7 20 94.0 45.0 2.4 2.8 3.0 1.9 2.9
SD43-562ML_ 5.6 20 101 40.0 2.2 2.5 2.7 1.6 2.8
SD43-682ML_ 6.8 20 110 35.0 2.0 2.3 2.5 1.5 2.5
SD43-822ML_ 8.2 20 132 30.0 1.8 2.1 2.2 1.4 2.2
SD43-103ML_ 10 20 182 28.0 1.7 2.0 2.1 1.3 2.2
SD43-123ML_ 12 20 210 24.0 1.5 1.8 1.9 1.1 1.8
SD43-153ML_ 15 20 235 22.0 1.3 1.6 1.7 1.0 1.7
SD43-183ML_ 18 20 338 19.0 1.3 1.4 1.6 0.89 1.5
SD43-223ML_ 22 20 378 17.0 1.2 1.3 1.4 0.85 1.4
SD43-273ML_ 27 20 522 16.0 1.0 1.1 1.3 0.73 1.1
SD43-333KL_ 33 10 540 14.0 0.90 1.1 1.1 0.62 0.90
SD43-393KL_ 39 10 587 13.0 0.84 0.97 1.1 0.61 0.90
SD43-473KL_ 47 10 844 12.0 0.77 0.87 0.93 0.53 0.86
SD43-563KL_ 56 10 937 11.0 0.72 0.80 0.86 0.51 0.70
SD43-683KL_ 68 10 1117 10.0 0.65 0.72 0.77 0.43 0.60
Notes
  1. When ordering, please specify packaging code: e.g. SD43-104KLC
  2. Inductance measured at 100 kHz, 0.1 Vrms using an Agilent/HP 4284A impedance analyzer or equivalent.
  3. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  4. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD-D test fixture. Details
  5. Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
  6. 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.

Termination:

  • RoHS compliant tin-silver over tin over nickel over silver.

Packaging:

  • C = 7" machine-ready reel
    EIA RS-481 clear plastic tape (500 parts per full reel).
  • B = Less than full reel
    In tape, not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead.
  • 13" reel, machine-ready 
    EIA RS-481 clear plastic tape. Factory order only, not stocked (2000 parts per full reel).
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
−40°C to +85°C with (40°C rise) Irms
Storage temperature range:
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+125°C (Ambient + temperature 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

Physical characteristics

sd43d.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_q.gif
500 2000* 178/330 60/100 13 18,4 12,4 12 8 4 2 3,4 0,35
* Special order
 

General specification

Core Material:
Ferrite
Weight:
0.17 – 0.20 g
Packaging:
500/7″ reel; 2000/13″ reel; Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.4 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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