MSS5121 Series

Shielded Surface Mount Power Inductors

Coilcraft MSS5121 Series shielded surface-mount power inductors feature low DC resistance and excellent current handling in a wide range of inductance values, making them a cost-effective option for a variety of general-purpose applications.

Low-loss ferrite drum core for flat inductance vs current
Low DC resistance for greater efficiency
Excellent current handling
Magnetic shielding allows high-density mounting
AEC-Q200 Grade 3 (-40°C to +85°C)

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Part number

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Count	Unit price
1	$1.53
300	$1.03
600	$0.62
1200	$0.48
2400	$0.42
4800	$0.39

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

Tolerance

M = 20%

Termination

L = Matte tin over nickel

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

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Designer's Kit:

Kit	Values	Price
C411	26 (3 of each)	$80.00

Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 4	Isat (A) 5			Irms (A) 6
Part number 1	Inductance (µH) 2 (Tolerance: ±20%)	DCR max (Ω) 3	SRF typ (MHz) 4	10% drop	20% drop	30% drop	20°C rise	40°C rise
MSS5121-222ML_	2.2	0.050	120	1.9	2.1	2.3	2.1	2.9
MSS5121-332ML_	3.3	0.070	90.0	1.6	1.8	2.0	1.7	2.3
MSS5121-472ML_	4.7	0.095	80.0	1.4	1.5	1.7	1.4	1.9
MSS5121-562ML_	5.6	0.10	73.0	1.3	1.4	1.5	1.3	1.8
MSS5121-682ML_	6.8	0.11	65.0	1.1	1.3	1.4	1.2	1.6
MSS5121-822ML_	8.2	0.14	55.0	1.1	1.2	1.3	1.1	1.5
MSS5121-103ML_	10	0.16	47.0	0.98	1.1	1.2	0.99	1.3
MSS5121-123ML_	12	0.19	41.0	0.87	0.99	1.1	0.91	1.2
MSS5121-153ML_	15	0.28	37.0	0.76	0.85	0.90	0.82	1.1
MSS5121-183ML_	18	0.30	35.0	0.71	0.81	0.87	0.75	1.0
MSS5121-223ML_	22	0.33	32.0	0.68	0.77	0.82	0.71	0.97
MSS5121-273ML_	27	0.42	27.0	0.61	0.69	0.74	0.63	0.85
MSS5121-333ML_	33	0.48	25.0	0.58	0.64	0.67	0.56	0.76
MSS5121-393ML_	39	0.53	23.0	0.48	0.54	0.58	0.55	0.73
MSS5121-473ML_	47	0.75	22.0	0.44	0.51	0.54	0.46	0.63
MSS5121-563ML_	56	0.86	19.0	0.40	0.46	0.49	0.44	0.60
MSS5121-683ML_	68	1.0	18.0	0.37	0.42	0.46	0.41	0.56
MSS5121-823ML_	82	1.2	15.0	0.35	0.40	0.42	0.35	0.47
MSS5121-104ML_	100	1.4	13.5	0.28	0.32	0.35	0.33	0.44
MSS5121-124ML_	120	1.6	12.0	0.26	0.30	0.32	0.31	0.42
MSS5121-154ML_	150	2.1	9.0	0.26	0.29	0.31	0.29	0.38
MSS5121-184ML_	180	2.3	8.5	0.21	0.25	0.27	0.25	0.34
MSS5121-224ML_	220	3.1	7.5	0.21	0.24	0.25	0.22	0.29
MSS5121-274ML_	270	3.5	7.0	0.18	0.20	0.22	0.20	0.27
MSS5121-334ML_	330	4.0	6.5	0.17	0.19	0.20	0.19	0.26
MSS5121-394ML_	390	5.0	5.8	0.15	0.17	0.19	0.15	0.21

Notes

When ordering, please specify termination and packaging codes: e.g. MSS5121-394KLC
Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using Coilcraft SMD -A fixture in an Agilent/HP 4284A impedance analyzer.
DCR measured at 25°C on a micro-ohmmeter and a Coilcraft CCF858 test fixture. For other operating temperatures, use this DCR at Temperature calculator.
SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD -D test fixture.
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:

L = RoHS compliant matte tin over nickel over phos bronze (current production) or gold over nickel over phos bronze (prior production).
T = RoHS tin-silver-copper (95.5/4/0.5) over gold over nickel over phos bronze. (Special order, added cost)
S = non-RoHS tin-lead (63/37) over gold over nickel over phos bronze. (Special order, added cost)

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 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 (2500 parts per full reel).

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C with (40°C rise) 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):

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
600	2500*	178/330	60/100	13	18,4	12,4	12	8	4	2	3,25	0,35

* Special order
‡ Part marking does not indicate polarity.

General specification

Core Material:

Ferrite

Weight:

141 - 147 mg

Packaging:

600/7″ reel, 2500/13″ reel; Plastic tape: 12 mm wide, 0.35 mm thick, 8 mm pocket spacing, 3.25 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.

Warehouses

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MSS5121 Series

Shielded Surface Mount Power Inductors

Selected configuration not available

Specifications

Termination:

Packaging:

Performance curves

Inductance vs. Current

Inductance vs. Frequency

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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