Document 252-1
Power Chip Inductors - 1812PS Series
Coilcraft’s new 1812PS Series is designed to be an
economicalalternativetolargerandmorecostlyshielded
power inductors.
Only 3,81 mm high, they are ideal for applications
requiring magnetic shielding, the smallest possible size
and lowest cost. Typical uses include notebook comput-
ers, PC cards, wireless communication and handheld
devices.
The specially designed ferrite cover provides magnetic
shielding and the best possible surface for pick and
place handling.
CoilcraftDesigner’sKitC143containssixsampleseach
ofthestandardpartsshown.Toorder,contactCoilcraftor
visithttp://order.coilcraft.com.
2DCR4 2SRF5
Part
2L ± 20%2 2Q min3
max
typ
2Isat6 2Irms7
1number1
(µH) @ 1 MHz (Ohms) (MHz) (A) (A)
1. Specifypackagingcode:
1812PS-105MC
1812PS-102M_
1812PS-152M_
1812PS-222M_
1812PS-272M_
1812PS-332M_
1.0
1.5
2.2
2.7
3.3
35
38
38
40
40
0.05
0.06
0.07
0.08
0.09
685
460
270
265
225
2.50 2.70
2.00 2.60
1.70 2.40
1.40 2.30
1.40 2.30
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.
1812PS-392M_
1812PS-472M_
1812PS-562M_
1812PS-682M_
1812PS-103M_
3.9
4.7
5.6
6.8
40
40
40
40
40
0.11
0.11
0.12
0.13
0.17
170
165
155
140
120
1.20 2.20
1.15 2.10
1.10 2.10
1.00 1.90
0.90 1.70
D = 13″ machine-ready reel. EIA-481 embossed plastic tape
(2200 parts per full reel)..
10
2. Inductance measured at 100 kHz, 0.1 Vrms, using Coilcraft SMD-A fixture in
Agilent/HP 4263Bimpedanceanalyzer.
3. Q measured on Agilent/HP 4291 with Agilent/HP 16193 test fixture.
4. DCR measured on micro-ohmmeter and Coilcraft CCF840 test fixture.
5. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft
SMD-D test fixture.
6. DC current at which the inductance drops 10% (typ) from its value without
current.
1812PS-153M_
1812PS-223M_
1812PS-333M_
1812PS-393M_
1812PS-473M_
15
22
33
39
47
40
40
40
48
50
0.26
0.33
0.40
0.56
0.87
100
45
30
30
28
0.70 1.45
0.54 1.20
0.46 1.10
0.40 1.00
0.35 0.80
1812PS-683M_
1812PS-823M_
1812PS-104M_ 100
1812PS-124M_ 120
1812PS-154M_ 150
68
82
50
55
60
60
60
1.08
1.25
1.32
1.45
2.20
17
17
14
12
11
0.32 0.67
0.28 0.65
0.27 0.65
0.23 0.60
0.20 0.51
7. Average current for a 40°C rise above 25°C ambient.
8. Operating temperature range -40°C to +85°C.
9. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
1812PS-224M_ 220
1812PS-334M_ 330
1812PS-474M_ 470
1812PS-564M_ 560
1812PS-684M_ 680
60
60
50
40
40
2.65
4.85
5.85
6.10
6.60
7
0.17 0.47
5.5 0.15 0.31
4.0 0.12 0.31
2.6 0.11 0.28
2.3 0.10 0.28
1812PS-824M_ 820
1812PS-105M_ 1000
30
28
7.35
10.00
1.8 0.09 0.25
1.8 0.08 0.22
Specifications subject to change without notice. Document 252-1 Revised 9/25/02