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1812FS Series

Filter Inductors

Coilcraft 1812FS Series shielded power inductors offer a unique construction that achieves exceptionally high self resonant frequencies (SRFs). Full magnetic shielding assures the lowest possible EMI.

5% tolerance parts in stock
High performance in transmit and receive filters
Low DC resistance
Magnetically shielded
Only 3,81 mm high
RoHS-compliant. 260°C compatible. Silver-palladium-platinum-glass frit terminations.

Need parts for space, military or other critical applications?
See Coilcraft ST450PHF Series

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Part number

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Count	Unit price
1	$1.25
300	$1.12
600	$0.94
1200	$0.72
3000	$0.58
6000	$0.43

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

Tolerance

K = 10%

J = 5%

Termination

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

L = Silver-palladium-platinum-glass frit

Packaging

C = 7" machine-ready reel

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Specifications

Electrical specifications at 25°C.

Part number 1	Inductance (µH) 2	Tolerance (%) 3	DCR max (Ω) 4	SRF typ (MHz) 5	Isat (mA) 6	Irms (mA) 7
Part number 1	Inductance (µH) 2	Tolerance (%) 3	DCR max (Ω) 4	SRF typ (MHz) 5	Isat (mA) 6	Irms (mA) 7	40°C rise
1812FS-102_R_	1.0	5,10	0.070	320	3100	2950
1812FS-122_R_	1.2	5,10	0.11	280	2800	2600
1812FS-152_R_	1.5	5,10	0.11	200	2100	2850
1812FS-222_R_	2.2	5,10	0.12	175	1800	2700
1812FS-242_R_	2.4	5,10	0.18	160	1900	2050
1812FS-272_R_	2.7	5,10	0.20	165	1400	2100
1812FS-332_R_	3.3	5,10	0.19	160	1400	1900
1812FS-392_R_	3.9	5,10	0.20	145	1300	1700
1812FS-472_R_	4.7	5,10	0.15	125	1000	1800
1812FS-562_R_	5.6	5,10	0.40	110	1000	1650
1812FS-682_R_	6.8	5,10	0.35	110	850	1450
1812FS-103_R_	10	5,10	0.55	90.0	710	1400
1812FS-153_R_	15	5,10	0.75	75.0	680	1150
1812FS-223_R_	22	5,10	0.85	15.0	600	855
1812FS-333_R_	33	5,10	1.1	10.0	540	820
1812FS-393_R_	39	5,10	1.1	9.8	500	710
1812FS-473_R_	47	5,10	1.2	8.0	390	645
1812FS-683_R_	68	5,10	1.8	14.2	260	650
1812FS-104_R_	100	5,10	2.5	4.5	260	520
1812FS-154_R_	150	5,10	3.8	3.0	220	475
1812FS-224_R_	220	5,10	5.4	3.0	180	390
1812FS-274_R_	270	5,10	6.5	2.0	150	350
1812FS-334_R_	330	5,10	6.8	3.0	150	310
1812FS-394_R_	390	5,10	7.6	3.0	140	310
1812FS-474_R_	470	5,10	8.7	2.0	130	280
1812FS-564_R_	560	5,10	11.2	2.0	110	280
1812FS-684_R_	680	5,10	12.7	2.0	100	250
1812FS-824_R_	820	5,10	16.8	1.0	90	210
1812FS-105_R_	1000	5,10	19.5	2.0	90	160

Notes

When ordering, please specify tolerance, termination, and packaging codes: e.g. 1812FS-105KLC
Inductance measured at 100 kHz, 0.1 Vrms, using a Coilcraft SMD-A fixture in an Agilent/HP 4263B LCR meter or equivalent.
Tolerances in bold are stocked for immediate shipment.
DCR measured at 25°C on a micro-ohmmeter and a Coilcraft CCF840 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 which the inductance drops 10% (typ.) from its value without current. Temperature derating curves.
Irms: Current that causes a 40°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings. Temperature derating curves.

Tolerance:

J = 5%, K = 10% (Table above shows stock tolerances in bold.)

Termination:

L= RoHS compliant silver-palladium-platinum-glass frit.
R = RoHS compliant matte tin over nickel over silver-platinum-glass frit.

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).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (2200 parts 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 +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

A max	B max	C max	D ref	E ref	F ref	G
0.231	0.196	0.150	0.107	0.100	0.178	0.025	inches
5,87	4,98	3,81	2,72	2,54	4,52	0,64	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	3,9	0,25

* Special order

General specification

Core Material:

Ceramic/Ferrite

Weight:

0.33 – 0.36 g

Packaging:

600/7″ reel; 2200/13″ reel. Plastic tape: 12 mm wide, 0.25 mm thick, 8 mm pocket spacing, 3.9 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.

1812FS Series

Filter Inductors