SD43 Series

Surface Mount Power Inductors

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

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Count	Unit price
1	$1.03
250	$0.83
500	$0.51
1000	$0.40
2500	$0.34
5000	$0.31

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

Tolerance

M = 20%

Termination

L = Tin-silver over tin over nickel over silver

Packaging

C = 7" machine-ready reel

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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
Part number 1	Inductance (µH) 2	Tolerance (%)	DCR max (mΩ) 3	SRF typ (MHz) 4	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

When ordering, please specify packaging code: e.g. SD43-683KLC
Inductance measured at 100 kHz, 0.1 Vrms using an Agilent/HP 4284A impedance analyzer or equivalent.
DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
SRF measured using Agilent/HP 8753D network analyzer and Coilcraft SMD-D test fixture. Details
Isat: DC current at 25°C that causes the specified inductance drop from its value without current. Temperature derating curves.
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-copper solder over tin over nickel over silver plating.

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (500 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
D = 13″ machine-ready reel. EIA-481 embossed 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):

See FIT/MTBF Calculations

Performance curves

Inductance vs. Current

Inductance vs. Frequency

Physical characteristics

Tape and Reel specification

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
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.

SD43 Series

Surface Mount Power Inductors