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1812LS (4532) Series

Wirewound Ferrite Beads

Our 1812LS Series wirewound ferrite beads have a ferrite core construction that achieves high current handing and low DCR. Impedance ranges from 770 Ohms to 191 kOhms at 10 MHz, and the tight inductance tolerance of ±5% is standard, stocked, and ready for shipment.

Higher performance than other surface mount ferrite beads in the market
High impedance across a wide bandwidth
Ferrite construction and heavy gauge wire for high current handling
Extremely low DCR for high current applications
Eliminates high frequency noise in power supplies or RF signal isolation applications
Defense Supply Center CID A-A-59699

Need parts for space, military or other critical applications?
See Coilcraft ML450RAB Series | See Coilcraft MS450RAB Series | See Coilcraft ST450RAB Series

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Part number

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Count	Unit price
1	$0.73
200	$0.58
600	$0.43
1200	$0.34
3000	$0.28
6000	$0.25
12000	$0.23

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

Termination

R = Matte tin over nickel over silver-platinum-glass frit

L = Silver-palladium-platinum-glass frit

Packaging

C = 7" machine-ready reel

Tolerance

J = 5%

. in stock, ready to ship today.

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Part number

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Designer's Kit:

Kit	Values	Price
C314	24 (10 of each)	$60.00

Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2 (Tolerance: ±5%)	Impedance typ (Ω)		SRF typ (MHz) 3	DCR max (Ω) 4	Irms (mA) 5
Part number 1	Inductance (µH) 2 (Tolerance: ±5%)	1 MHz	10 MHz	SRF typ (MHz) 3	DCR max (Ω) 4	Irms (mA) 5
1812LS-123XJR_	12.0 @ 2.5 MHz	77.9	771	85.0	2.0	310
1812LS-153XJR_	15.0 @ 2.5 MHz	97.8	970	70.0	2.5	290
1812LS-183XJR_	18.0 @ 2.5 MHz	118	1201	52.0	2.8	270
1812LS-223XJR_	22.0 @ 2.5 MHz	140	1405	58.0	3.2	260
1812LS-273XJR_	27.0 @ 2.5 MHz	177	1826	46.0	3.6	240
1812LS-333XJR_	33.0 @ 2.5 MHz	212	2185	40.0	4.0	230
1812LS-393XJR_	39.0 @ 2.5 MHz	255	2729	30.0	4.5	210
1812LS-473XJR_	47.0 @ 2.5 MHz	301	3705	24.0	5.0	200
1812LS-563XJR_	56.0 @ 2.5 MHz	361	4917	20.0	5.5	190
1812LS-683XJR_	68.0 @ 2.5 MHz	423	7392	16.0	6.0	180
1812LS-823XJR_	82.0 @ 2.5 MHz	512	11227	13.5	7.0	170
1812LS-104XJR_	100.0 @ 2.5 MHz	619	19090	12.0	8.0	150
1812LS-124XJR_	120.0 @ 0.79 MHz	757	13752	14.5	11.5	135
1812LS-154XJR_	150.0 @ 0.79 MHz	979	37311	11.5	13.0	125
1812LS-184XJR_	180.0 @ 0.79 MHz	1175	191219	9.3	14.2	120
1812LS-224XJR_	220.0 @ 0.79 MHz	1427	22919	7.6	16.2	115
1812LS-274XJR_	270.0 @ 0.79 MHz	1742	29599	8.3	20.5	105
1812LS-334XJR_	330.0 @ 0.79 MHz	2169	18825	7.0	22.5	100
1812LS-394XJR_	390.0 @ 0.79 MHz	2558	8911	5.2	24.5	90
1812LS-474XJR_	470.0 @ 0.79 MHz	3125	8087	4.4	26.5	85
1812LS-564XJR_	560.0 @ 0.79 MHz	3858	2196	2.8	28.5	75
1812LS-684XJR_	680.0 @ 0.79 MHz	4599	3257	2.3	38.0	60
1812LS-824XJR_	820.0 @ 0.79 MHz	6156	1747	2.1	41.0	55
1812LS-105XJR_	1000.0 @ 0.79 MHz	7167	2265	1.9	44.0	50

Notes

When ordering, please specify termination and packaging codes: e.g. 1812LS-105XJRC
Inductance at 2.5 MHz measured using a Coilcraft SMD-A fixture in an Agilent/HP 4286A impedance analyzer with Coilcraft-provided correlation pieces. Inductance at 0.79 MHz measured using a Coilcraft SMD-B fixture in an Agilent/HP 4192A impedance analyzer with Coilcraft-provided correlation pieces.
SRF measured using an Agilent/HP 8753D network analyzer and a Coilcraft SMD-D test fixture.
DCR measured on a Cambridge Technology Micro-ohmmeter. For other operating temperatures, use this DCR at Temperature calculator.
Irms: Current that causes a 15°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Because of their open construction, these parts will not saturate.

Termination:

R = RoHS compliant, matte tin over nickel over silver platinum-glass frit.
L = RoHS compliant silver-palladium-platinum-glass frit.
T = RoHS tin-silver-copper (95.5/4/0.5). (Special order, added cost)
S = non-RoHS tin-lead (63/37). (Special order, added cost)

Packaging:

C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2200 per full reel).
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.

Environmental

Environmental:

RoHS compliant

Ambient temperature range:

–40°C to +85°C with Irms current

Storage temperature range:

Component: –40°C to +100°C.
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+100°C (ambient + temp rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Impedance vs Frequency

Physical characteristics

A max	B max	C max	D ref	E	F	G	H	I	J
0.195	0.150	0.135	0.070	0.100	0.025	0.128	0.120	0.045	0.118	inches
4,95	3,81	3,43	1,78	2,54	0,64	3,25	3,05	1,14	3,00	mm

Height dimension (C) is before optional solder application.
For maximum height dimension including solder, add 0.006 in / 0,152 mm

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	2200*	178/330	60/100	13	18,4	12,4	12	8	4	2	3,7	0,3

* Special order

General specification

Core Material:

Ferrite

Weight:

142 – 171 mg

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.

1812LS (4532) Series

Wirewound Ferrite Beads