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Document 106-1

Chip Inductors – 1812LS Series (4532)
HalogenFree• Highest inductance values of all our chip inductors• Ferrite construction for high current handling• Inductance values from 12 – 1000 µH

AEC		
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_

Q200 +125°CInductance2(µH)
1215182227
33
3947566882
100
120
150
180
220270
330
390
470
560
680
820
1000

Request free evaluation samples by contacting Coilcraftor visiting www.coilcraft.com.

PercentQ
tolerance	 
typ3
542
542
545
545
545
545
545
542
542
540
540
540
533
536
536
538
538
538
538
538
533
525
525
530

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.

Test freq
(MHz)
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79
0.79

SRF typ4	 DCR max5	 Irms6(MHz)(Ohms)(mA)
85
2.0310702.5
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
12.0
8.0
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
28.5
75
2.3
38.0
60
2.1
41.0
55
1.9
44.0
50

2. 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 andCoilcraft SMD-B test fixture.
3. Q read at test frequency directly on an Agilent/HP 4192A LF
impedance analyzer and a Coilcraft SMD-B test fixture.
4. SRF measured using an Agilent/HP 8753D network analyzer and a
Coilcraft SMD-D test fixture.
5. DCR measured on a Cambridge Technology micro-ohmmeter.
6. Current that causes a 15°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolutemaximum ratings.
7. 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 106-1

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 106-2

1812LS (4532) Chip Inductors
Typical Q vs Frequency

Typical L vs Current
10000605012 µH
270 µH

AEC
Q200 125°C+Q Factor

4082 µH

18 µH
33 µH

Inductance (µH)

Halogen
Free560 µH
1000 µH30
201000 µH

1000

330 µH100 µH100

33 µH

2.5 MHz100.79 MHz

12 µH

1000.1

0.2 0.3 0.4

DF

Eterminal

1Frequency (MHz)23CB
overall

A0.64

5 68 10H
Pick andplacematerialIGJFI

Terminal wraparound:approx 0.015/0,38 both ends

Recommended
Land PatternABC
Dmax max max
refEFG
HI
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.

1

10100
DC Current (mA)

1000

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 106-2

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.