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Document 1486-1

Wirewound Ferrite Beads 1812LS (4532)
HalogenFree• Higher performance than other surface mount ferrite
beads in the market• High impedance across a wide bandwidth• Extremely low DCR for high current applications

AEC

Q200 +125°C		
Part number1
1812LS-123XJR_
1812LS-153XJR_
1812LS-183XJR_
1812LS-223XJR_
1812LS-273XJR_
1812LS-333XJR_
1812LS-393XJR_
1812LS-473XJR_
1812LS-563XJR_
1812LS-683XJR_
1812LS-823XJR_
1812LS-104XJR_
1812LS-124XJR_
1812LS-154XJR_
1812LS-184XJR_1812LS-224XJR_
1812LS-274XJR_
1812LS-334XJR_
1812LS-394XJR_
1812LS-474XJR_
1812LS-564XJR_
1812LS-684XJR_
1812LS-824XJR_
1812LS-105XJR_

Inductance2±5% (µH)
12 @ 2.5 MHz
15 @ 2.5 MHz
18 @ 2.5 MHz
22 @ 2.5 MHz
27 @ 2.5 MHz
33 @ 2.5 MHz
39 @ 2.5 MHz
47 @ 2.5 MHz
56 @ 2.5 MHz
68 @ 2.5 MHz
82 @ 2.5 MHz
100 @ 2.5 MHz
120 @ 0.79 MHz
150 @ 0.79 MHz
180 @ 0.79 MHz
220 @ 0.79 MHz
270 @ 0.79 MHz
330 @ 0.79 MHz
390 @ 0.79 MHz
470 @ 0.79 MHz
560 @ 0.79 MHz
680 @ 0.79 MHz
820 @ 0.79 MHz
1000 @ 0.79 MHz• Ferrite construction and heavy gauge wire for high current handling• Eliminates high frequency noise in power supplies or
RF signal isolation applications

Impedance typ (Ohms)
1 MHz    10 MHz

77.85
97.79
118.2
140.2
177.1
211.5
254.6
301.1
361.3
422.5
512.0
619.3
757.4
978.9
1175
1427
1742
2169
2558
3125
3858
4599
6156
7167

770.7
969.6
1201
1405
1826
2185
2729
3705
4917
7392
11,227
19,09013,75237,311
191,219
22,91929,59918,825
8911
8087
2196
32571747
2265

1. When ordering, please specify termination and packaging codes:
1812LS-105XJRC
Termination: R = RoHS compliant matte tin over nickel over silverplatinum-glass frit.
L = RoHS compliant silver-palladium-platinum-glass frit.			Special order: T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic
tape (600 per full reel). Quantities less than full reelavailable: in tape (not machine ready) or with leaderand trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastictape. Factory order only, not stocked (2200 perfull reel).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor multiple packaging codes. When ordering, simply
change the last letter of your part number from B to C.

SRF typ3	 DCR max4	 Irms5(MHz)(Ohms)
(mA)
85
2.0
310
70
2.5
290
52
2.8
270
58
3.2
260
46
3.6
240
40
4.0
230
30
4.5
210
24
5.0
200
20
5.5
190
16
6.0
180
13.5
7.0
170
12.08.0
150
14.5
11.5
135
11.5
13.0
125
9.3
14.2
120
7.6
16.2
115
8.3
20.5
105
7.0
22.5
100
5.2
24.5
90
4.4
26.5
85
2.8
28.575
2.3
38.0
60
2.1
41.0
55
1.9
44.0502. Inductance at 2.5 MHz measured using an Agilent/HP 4286A anda Coilcraft SMD-A fixture with Coilcraft-provided correlation pieces.
Inductance at 0.79 MHz measured using an Agilent/HP 4192A and
Coilcraft SMD-B test fixture.
3. SRF measured using an Agilent/HP 8753D network analyzer and aCoilcraft SMD-D test fixture.
4. DCR measured on a Cambridge Technology micro-ohmmeter.
5. Current that causes a 15°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolutemaximum ratings.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Visit http://www.coilcraft.com/colrcode.cfm for part marking data.

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 1486-1

Revised 08/08/22© Coilcraft Inc. 2022
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 1486-2

1812LS Wirewound Ferrite Beads
Typical L vs Current

Typical Impedance vs Current
1000

10000

1000 µH

1000 µH+Inductance (µH)

1000

AEC
Q200 125°C

Impedance (kOhms)

HalogenFree

330 µH100 µH

10033 µH

330 µH

33 µH

100 µH100

12 µH101.00.1

12 µH

100.01110DFE
terminal

1000CBoverallA100
DC Current (mA)

H
Pick andplacematerialIGJFI

Terminal wraparound:approx 0.015/0,38 both ends

Recommended
Land PatternABCD
max max max
refEFG
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

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

1101001000

Frequency (MHz)Designer’s Kit C314 contains 10 of each valueCore material Ferrite
Terminations RoHS compliant matte tin over nickel over silver
platinum-glass frit. Other terminations available at additional cost.
Weight 142 – 171 mg
Ambient temperature –40°C to +85°C with Irms current
Maximum part temperature +100°C (ambient + temp rise)
Storage temperature Component: –40°C to +100°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at+260°C, parts cooled to room temperature between cycles
Temperature Coefficient of Inductance (TCL) +200 to +700 ppm/°C
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /85% relative humidity)
Packaging 600/7″ reel; 2200/13″ reel. Plastic tape: 12 mm wide,
0.3 mm thick, 8 mm pocket spacing, 3.7 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 1486-2

Revised 08/08/22© Coilcraft Inc. 2022
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.