Document 106-1
Chip Inductors 1812LS Series (4532)
Highest inductance values of all our chip inductors Request free evaluation samples by contacting Coilcraft
or visiting www.coilcraft.com.
Ferrite construction for high current handling
Inductance values from 12 1000 H
2 4 5 6
Inductance Percent Q Test freq SRF typ DCR max Irms
1 3
Part number (H) tolerance min (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 33 0.79 2.3 38.0 60
1812LS-824XJL_ 820 5 30 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:
Designers Kit C314 contains 10 of each value
Core material Ferrite
1812LS-105XJLC
Terminations RoHS compliant silver-palladium-platinum-glass frit.
Termination: L = RoHS compliant silver-palladium-platinum-glass frit.
Other terminations available at additional cost.
Special order: T = RoHS tin-silver-copper (95.5/4/0.5)
or S = non-RoHS tin-lead (63/37).
Weight 142 171 mg
Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic
Ambient temperature 40C to +85C with Irms current, +85C to
tape (600 per full reel).
+100C with derated current
B = Less than full reel. In tape, but not machine-ready.
Storage temperature Component: 40C to +100C.
To have a leader and trailer added ($25 charge),
Tape and reel packaging: 40C to +80C
use code letter C instead.
Resistance to soldering heat Max three 40 second reflows at
D = 13 machine-ready reel. EIA-481 embossed plastic
+260C, parts cooled to room temperature between cycles
tape. Factory order only, not stocked (2200 per full
reel).
Temperature Coefficient of Inductance (TCL) +200 to +700 ppm/C
2. Inductance at 2.5 MHz measured using an Agilent/HP 4286A and
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C /
a Coilcraft SMD-A fixture with Coilcraft-provided correlation pieces.
85% relative humidity)
Inductance at 0.79 MHz measured using an Agilent/HP 4192A and
Coilcraft SMD-B test fixture. Failures in Time (FIT) / Mean Time Between Failures (MTBF)
3. Q read at test frequency directly on an Agilent/HP 4192A LF imped- One per billion hours / one billion hours, calculated per Telcordia SR-332
ance analyzer and a Coilcraft SMD-B test fixture.
Packaging 600/7 reel; 2200/13 reel. Plastic tape: 12 mm wide,
4. SRF measured using an Agilent/HP 8753D network analyzer and a
0.3 mm thick, 8 mm pocket spacing, 3.7 mm pocket depth
Coilcraft SMD-D test fixture.
PCB washing Tested with pure water or alcohol only. For other
5. DCR measured on a Cambridge Technology micro-ohmmeter.
solvents, see Doc787_PCB_Washing.pdf
6. Current that causes a 15C temperature rise from 25C ambient.
Because of their open construction, these parts will not saturate.
7. Electrical specifications at 25C.
Refer to Doc 362 Soldering Surface Mount Components before soldering.
Visit Document 106-2
1812LS (4532) Chip Inductors
Typical Q vs Frequency Typical L vs Current
60 10000
50
12 H
18 H
270 H 1000 H
33 H
1000
40
82 H
330 H
560 H
30
1000 H
100 H
100
20
33 H
2.5 MHz
10
0.79 MHz
12 H
0 10
0.1 0.2 0.3 0.4 0.6 12 3845 610 1 10 100 1000
DC Current (mA)
Frequency (MHz)
C
B
Irms Derating
H
overall
D
120 Pick and
I
F
place
110
material
100
A G J
90
80
F
I
70
E
60
Terminal wraparound:
terminal
Recommended
approx 0.015/0,38 both ends
50
Land Pattern
40
A B C D
max max max ref E F G H I J
30
0.195 0.150 0.135 0.070 0.100 0.025 0.128 0.120 0.045 0.118 inches
20
4,95 3,81 3,43 1,78 2,54 0,64 3,25 3,05 1,14 3,00 mm
10
Note: Height dimension (C) is before optional solder application. For maximum
height dimension including solder, add 0.006 in / 0,152 mm.
0
-40 -20 020406080 100 120
Ambient temperature (C)
Document 106-2 Revised 01/19/12
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com Coilcraft Inc. 2013
This product may not be used in medical or high
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
risk applications without prior Coilcraft approval.
China +86-21-6218 8074 sales@coilcraft.com.cn
Specification subject to change without notice.
Singapore + 65-6484 8412 sales@coilcraft.com.sg Please check web site for latest information.
Q Factor
Percent of rated Irms
25C
Inductance (H)