Document 252-1
Power Chip Inductors – 1812PS Series
• Economical alternative to larger shielded power inductors.
• Ferrite cover provides magnetic shielding
For new designs, we recommend the LPS4018 or
LPS5030 as an alternative to this series. They offer
better current handling, lower DCR, a lower profile and
a smaller footprint. We will continue to manufacture
and support the 1812PS.
Part
L
2
1
number
(µH)
1812PS-102_L_
1.0
1812PS-122_L_
1.2
1812PS-152_L_
1.5
1812PS-222_L_
2.2
1812PS-272_L_
2.7
1812PS-332_L_
3.3
1812PS-392_L_
3.9
1812PS-472_L_
4.7
1812PS-562_L_
5.6
1812PS-682_L_
6.8
1812PS-103_L_
10
1812PS-153_L_
15
1812PS-223_L_
22
1812PS-333_L_
33
1812PS-393_L_
39
1812PS-473_L_
47
1812PS-683_L_
68
1812PS-823_L_
82
1812PS-104_L_ 100
1812PS-124_L_ 120
1812PS-154_L_ 150
1812PS-224_L_ 220
1812PS-334_L_ 330
1812PS-474_L_ 470
1812PS-564_L_ 560
1812PS-684_L_ 680
1812PS-824_L_ 820
1812PS-105_L_ 1000
DCR
SRF
%
Q
max
5
typ
6
3
4
tol
min (Ohms) (MHz)
10,5
35
0.05 685
10,5
38
0.06 460
10,5
38
0.06 460
10,5
38
0.07 270
10,5
40
0.08 265
10,5
40
0.09 225
10,5
40
0.11 170
10,5
40
0.11 165
10,5
40
0.12 155
10,5
40
0.13 140
10,5
40
0.17 120
10,5
40
0.26 100
10,5
40
0.33
45
10,5
40
0.40
30
10,5
48
0.56
30
10,5
50
0.87
28
10,5
50
1.08
17
10,5
55
1.25
17
10,5
60
1.32
14
10,5
60
1.45
12
10,5
60
2.20
11
10,5
60
2.65
7
10,5
60
4.85
5.5
10,5
50
5.85
4.0
10,5
40
6.10
2.6
10,5
40
6.60
2.3
10,5
30
7.35
1.8
10,5
28 10.00
1.8
Isat
7
(A)
2.50
2.00
2.00
1.70
1.40
1.40
1.20
1.15
1.10
1.00
0.90
0.70
0.54
0.46
0.40
0.35
0.32
0.28
0.27
0.23
0.20
0.17
0.15
0.12
0.11
0.10
0.09
0.08
Irms
8
(A)
2.70
2.60
2.60
2.40
2.30
2.30
2.20
2.10
2.10
1.90
1.70
1.45
1.20
1.10
1.00
0.80
0.67
0.65
0.65
0.60
0.51
0.47
0.31
0.31
0.28
0.28
0.25
0.22
1. When ordering, specify
tolerance, termination
and
packaging
codes:
1812PS-105JLC
J
= 5%
K
= 10%
(Table shows stock tolerances in bold.)
Termination: 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 parts per full reel).
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter C instead.
D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (2200 parts per
full reel).
2. Inductance measured at 100 kHz, 0.1 Vrms, using aCoilcraft SMD-A
fixture in an Agilent/HP 4263B LCR meter.
3. Tolerances in bold are stocked for immediate shipment.
4. Q measured at 1 MHz on an Agilent/HP 4291 with an Agilent/HP 16193
test fixture.
5. DCR measured on micro-ohmmeter and a Coilcraft CCF840 test fixture.
6. SRF measured using an Agilent/HP 8753D network analyzer and a
Coilcraft SMD-D test fixture.
7. DC current at which the inductance drops 10% (typ) from its value
without current.
8. Current that causes a 40°C temperature rise from 25°C ambient.
9. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Tolerance:
Specifications subject to change without notice.
Please check our website for latest information.
Document 252-1
Revised 08/17/09
© Coilcraft, Inc. 2009
Document 252-2
Power Chip Inductors - 1812PS Series
Typical L vs Frequency
10000
1000 µH
Typical L vs Current
10000
1000 µH
1000
1000
Inductance (µH)
Inductance (µH)
100
100 µH
100
100 µH
10
10 µH
10
10 µH
1
1 µH
1
1 µH
0.1
0.01
0.1
1
10
0.1
0.01
0.1
1
10
Frequency (MHz)
B
E
Current (A)
C
D
Irms Derating
120
110
100
A F
0.120
3,05
0.045
1,14
0.118
3,00
Percent of rated
I
rms
90
80
70
60
50
40
30
20
10
0
-40
-20
0
20
40
60
80
100
120
140 160
G
Recommended
Land Pattern
A
max
0.231
5,87
25°C
B
max
0.196
4,98
C
max
0.150
3,81
D
ref
0.107
2,72
E
ref
0.100
2,54
F
ref
0.178
4,52
G
0.025
0,64
inches
mm
Ambient temperature (°C)
Core material
Ceramic/Ferrite
Core and winding loss
See www.coilcraft.com/coreloss
Terminations
RoHS compliant silver-palladium-platinum-glass frit.
Other terminations available at additional cost.
Weight
286 – 323 mg
Ambient temperature
–40°C to +105°C with
Irms
current, +105°C
to +145°C with derated current
Storage temperature
Component: –40°C to +145°C.
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)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
600 per 7″reel; 2200 per 13″ reel;
Plastic tape: 12 mm wide, 0.25 mm thick, 4 mm pocket spacing,
3.9 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Document 252-2
Revised 08/17/09
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
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