Document 252-1
Power Chip Inductors - 1812PS Series
Coilcraft’s new 1812PS Series is designed to be an
economical alternative to larger and more costly shielded
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.
Coilcraft
Designer’s Kit C143
contains six samples each
of the standard parts shown. To order, contact Coilcraft or
visit
http://order.coilcraft.com.
Part
L ± 20%
number
1
(µH)
1812PS-102M_
1.0
1812PS-152M_
1.5
1812PS-222M_
2.2
1812PS-272M_
2.7
1812PS-332M_
3.3
1812PS-392M_
3.9
1812PS-472M_
4.7
1812PS-562M_
5.6
1812PS-682M_
6.8
1812PS-103M_
10
1812PS-153M_
15
1812PS-223M_
22
1812PS-333M_
33
1812PS-393M_
39
1812PS-473M_
47
1812PS-683M_
68
1812PS-823M_
82
1812PS-104M_ 100
1812PS-124M_ 120
1812PS-154M_ 150
1812PS-224M_ 220
1812PS-334M_ 330
1812PS-474M_ 470
1812PS-564M_ 560
1812PS-684M_ 680
1812PS-824M_ 820
1812PS-105M_ 1000
1
2
2
DCR
4
Q min
max
@ 1 MHz (Ohms)
35
0.05
38
0.06
38
0.07
40
0.08
40
0.09
40
0.11
40
0.11
40
0.12
40
0.13
40
0.17
40
0.26
40
0.33
40
0.40
48
0.56
50
0.87
50
1.08
55
1.25
60
1.32
60
1.45
60
2.20
60
2.65
60
4.85
50
5.85
40
6.10
40
6.60
30
7.35
28
10.00
2
3
2
SRF
5
typ
(MHz)
685
460
270
265
225
170
165
155
140
120
100
45
30
30
28
17
17
14
12
11
7
5.5
4.0
2.6
2.3
1.8
1.8
2
2
Isat
6
2
Irms
7
(A)
(A)
2.50 2.70
2.00 2.60
1.70 2.40
1.40 2.30
1.40 2.30
1.20 2.20
1.15 2.10
1.10 2.10
1.00 1.90
0.90 1.70
0.70 1.45
0.54 1.20
0.46 1.10
0.40 1.00
0.35 0.80
0.32 0.67
0.28 0.65
0.27 0.65
0.23 0.60
0.20 0.51
0.17 0.47
0.15 0.31
0.12 0.31
0.11 0.28
0.10 0.28
0.09 0.25
0.08 0.22
1. Specify
packaging
code:
1812PS-105MC
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
(2200 parts per full reel)..
2. Inductance measured at 100 kHz, 0.1 Vrms, using Coilcraft SMD-A fixture in
Agilent/HP 4263B impedance analyzer.
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.
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.
Packaging:
Specifications subject to change without notice.
Document 252-1
Revised 9/25/02
PCB Design
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