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Document 106-1
Chip Inductors – 1812LS Series (4532)
Halogen
Free
AEC
Q200 +125°C
• Highest inductance values of all our chip inductors
• Ferrite construction for high current handling
• Inductance values from 12 – 1000 µH
Request free evaluation samples by contacting Coilcraft
or visiting www.coilcraft.com.
Inductance2
SRF typ4
Percent
Q
Test freq
DCR max5
Irms6
Part number1
(µH) tolerance
typ3
(MHz) (MHz) (Ohms) (mA)
1812LS-123XJL_ 12
5
42 2.5 85
2.0 310
1812LS-153XJL_ 15
5
42 2.5 70
2.5 290
1812LS-183XJL_ 18
5
45 2.5 52
2.8 270
1812LS-223XJL_ 22
5
45 2.5 58
3.2 260
1812LS-273XJL_ 27
5
45 2.5 46
3.6 240
1812LS-333XJL_ 33
5
45 2.5 40
4.0 230
1812LS-393XJL_ 39
5
45 2.5 30
4.5 210
1812LS-473XJL_ 47
5
42 2.5 24
5.0 200
1812LS-563XJL_ 56
5
42 2.5 20
5.5 190
1812LS-683XJL_ 68
5
40 2.5 16
6.0 180
1812LS-823XJL_ 82
5
40 2.5 13.5
7.0 170
1812LS-104XJL_ 100
5
40 2.5 12.0
8.0 150
1812LS-124XJL_ 120
5
33 0.79 14.5 11.5 135
1812LS-154XJL_ 150
5
36 0.79 11.5 13.0 125
1812LS-184XJL_ 180
5
36 0.79 9.3 14.2 120
1812LS-224XJL_ 220
5
38 0.79 7.6 16.2 115
1812LS-274XJL_ 270
5
38 0.79 8.3 20.5 105
1812LS-334XJL_ 330
5
38 0.79 7.0 22.5 100
1812LS-394XJL_ 390
5
38 0.79 5.2 24.5 90
1812LS-474XJL_ 470
5
38 0.79 4.4 26.5 85
1812LS-564XJL_ 560
5
33 0.79 2.8 28.5 75
1812LS-684XJL_ 680
5
25 0.79 2.3 38.0 60
1812LS-824XJL_ 820
5
25 0.79 2.1 41.0 55
1812LS-105XJL_ 1000
5
30 0.79 1.9 44.0 50
1. When ordering, please specify termination and packaging codes:
1812LS-105XJLC
Termination: L = RoHS compliant silver-palladium-platinum-glass frit.
R
= RoHS compliant matte tin over nickel over silverplatinum-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 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.
2. Inductance at 2.5 MHz measured using an Agilent/HP 4286A and
a 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. 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 absolute
maximum 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 12/02/21
© Coilcraft Inc. 2021
This product may not be used in medical or high
risk 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
10000
60
50
12 µH
270 µH
AEC
Q200 125°C
+
Q Factor
40
82 µH
18 µH
33 µH
Inductance (µH)
Halogen
Free
560 µH
1000 µH
30
20
1000 µH
1000
330 µH
100 µH
100
33 µH
2.5 MHz
10
0.79 MHz
12 µH
10
0
0.1
0.2 0.3 0.4
D
F
E
terminal
1
Frequency (MHz)
2
3
C
B
overall
A
0.6
4
5 6
8 10
H
Pick and
place
material
I
G
J
F
I
Terminal wraparound:
approx 0.015/0,38 both ends
Recommended
Land Pattern
A B C D
max max max 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
Note: Height dimension (C) is before optional solder application. For maximum
height dimension including solder, add 0.006 in / 0,152 mm.
1
10
100
DC Current (mA)
1000
Designer’s Kit C314 contains 10 of each value
Core material Ferrite
Terminations RoHS compliant silver-palladium-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
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