Document 105-1
Chip Inductors – 1812CS Series (4532)
Coilcraft 1812CS ceramic chip inductors are ideal
for applications requiring mid-range inductance and
close tolerances (±5%). Also, the SRFs of the parts
Part
1812CS-102X_B_
1812CS-122X_B_
1812CS-152X_B_
1812CS-182X_B_
1812CS-222X_B_
1812CS-272X_B_
1812CS-332X_B_
1812CS-392X_B_
1812CS-472X_B_
1812CS-562X_B_
1812CS-682X_B_
1812CS-822X_B_
1812CS-103X_B_
1812CS-123X_B_
1812CS-153X_B_
1812CS-183X_B_
1812CS-223X_B_
1812CS-273X_B_
1812CS-333X_B_
number
1
Inductance
2
(µH)
1.0 @ 7.9 MHz
1.2 @ 7.9 MHz
1.5 @ 7.9 MHz
1.8 @ 7.9 MHz
2.2 @ 7.9 MHz
2.7 @ 7.9 MHz
3.3 @ 7.9 MHz
3.9 @ 7.9 MHz
4.7 @ 7.9 MHz
5.6 @ 7.9 MHz
6.8 @ 7.9 MHz
8.2 @ 7.9 MHz
10.0 @ 7.9 MHz
12.0 @ 2.5 MHz
15.0 @ 2.5 MHz
18.0 @ 2.5 MHz
22.0 @ 2.5 MHz
27.0 @ 2.5 MHz
33.0 @ 2.5 MHz
Percent
tolerance
3
5
5
5,2
5
5
5
5
5,2
5
5
5
5
5
5
5
5
5,2
5
5,2
in this series are up to 3 times higher than those of
commonly available 1812 chip inductors made on
ferrite cores.
Q
60 @ 50 MHz
62 @ 50 MHz
65 @ 50 MHz
68 @ 50 MHz
63 @ 50 MHz
63 @ 50 MHz
65 @ 50 MHz
69 @ 50 MHz
63 @ 50 MHz
59 @ 50 MHz
60 @ 50 MHz
47 @ 50 MHz
36 @ 50 MHz
35 @ 10 MHz
34 @ 10 MHz
30 @ 10 MHz
32 @ 10 MHz
29 @ 10 MHz
20 @ 10 MHz
min
4
SRF min
5
(MHz)
310
230
210
190
170
160
145
130
115
100
90
80
70
60
50
45
40
30
20
DCR max
6
(Ohms)
1.2
1.2
1.6
2.0
2.2
3.2
3.8
5.0
5.4
5.7
6.6
7.0
7.7
8.7
9.6
10.5
11.5
12.5
13.5
Irms
7
(mA)
480
480
430
380
340
300
270
240
230
220
210
200
190
180
170
160
155
150
145
1. When ordering, please specify
tolerance
and
packaging
codes:
1812CS-333XGBC
Tolerance: G
= 2%
J
= 5%
(Table shows stock tolerances in bold.)
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 using a Coilcraft SMD-A fixture in an Agilent/HP
4286A impedance analyzer with Coilcraft-provided correlation pieces.
3. Tolerances in bold are stocked for immediate shipment.
4. Q measured using an Agilent/HP 4291A with an Agilent/HP 16193 test
fixture.
5. SRF measured using an Agilent/HP 8753D network analyzer and a
Coilcraft SMD-D test fixture.
6. DCR measured on a Cambridge Technology micro-ohmmeter and a
Coilcraft CCF859 test fixture.
7. Average current for a 15°C rise above 25°C ambient.
8. Operating temperature range
−40°C
to +125°C.
9. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
For part marking data see Color Coding section.
Specifications subject to change without notice.
Please check our website for latest information.
Document 105-1
Revised 02/09/05
© Coilcraft, Inc. 2005
Document 105-2
Chip Inductors – 1812CS Series (4532)
Typical Q vs Frequency
80
Typical L vs Frequency
40
1.8 µH
3.9 µH
33.0 µH
70
60
50
30
Inductance (µH)
Q Factor
8.2 µH
22.0 µH
40
30
20
15.0 µH
15.0 µH
22.0 µH
20
10
33.0 µH
8.2 µH
3.9 µH
1.8 µH
10
0
1
10
100
0
1
10
100
1000
Frequency (MHz)
Frequency (MHz)
B
overall
F
A
G
F
E
terminal
C
I
J
I
D
Terminal wraparound:
approx 0.015/0,38 both ends
H
Recommended
Land Pattern
G
H
3,05
I
1,14
J
3,00
A max B max C max
0.195 0.150 0.135
4,95
3,81
3,43
D ref
0.070
1,78
E
2,54
F
0,64
0.100 0.025 0.128 0.120 0.045 0.118
3,25
Weight:
109 – 128 mg
Terminations:
Silver-palladium-platinum
Tape and reel:
600/7″ reel; 2200/13″ reel 12 mm tape width
For packaging data see Tape and Reel Specifications section.
Specifications subject to change without notice.
Please check our website for latest information.
Document 105-2
Revised 12/28/04
© Coilcraft, Inc. 2005
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