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Document 105-1
Chip Inductors – 1812CS (4532)
• Higher SRF values than 1812 size parts with ferrite cores
• 5% tolerances for all values
• 19 inductance values from 1.0 to 33 µH
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 @ 7.9 MHz
12 @ 2.5 MHz
15 @ 2.5 MHz
18 @ 2.5 MHz
22 @ 2.5 MHz
27 @ 2.5 MHz
33 @ 2.5 MHz
Percent
tolerance
3
5
5
5,2
5
5,2
5,2
5,2
5,2
5
5
5
5,2
5
5
5,2
5
5,2
5
5,2
Request free evaluation samples by contacting Coilcraft
or visiting
www.coilcraft.com.
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
Part
1812CS-102XJE_
1812CS-122XJE_
1812CS-152X_E_
1812CS-182XJE_
1812CS-222X_E_
1812CS-272X_E_
1812CS-332X_E_
1812CS-392X_E_
1812CS-472XJE_
1812CS-562XJE_
1812CS-682XJE_
1812CS-822X_E_
1812CS-103XJE_
1812CS-123XJE_
1812CS-153X_E_
1812CS-183XJE_
1812CS-223X_E_
1812CS-273XJE_
1812CS-333X_E_
number
1
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
1. When ordering, specify
tolerance, termination
and
packaging
codes:
1812CS-333XGEC
G
= 2%
J
= 5% (Table shows stock tolerances
in bold.)
Termination: E
= Halogen free component. RoHS compliant silver-
palladium-platinum-glass frit terminations.
L
= RoHS compliant, not halogen-free. Silver-palladium-
platinum-glass frit terminations.
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 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. Current that causes a 15°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolute maxi-
mum ratings.
8. Electrical specifications at 25°C.
Refer to
Soldering Coilcraft Components
before soldering.
Refer to
RF Inductors – Color Coding
for the explanation of color dots.
Tolerance:
Designer’s Kit C337
contains 10 of each 5% part
Core material
Ceramic
Environmental
RoHS compliant, halogen free
Terminations
Silver-palladium-platinum-glass frit. Other terminations
available at additional cost.
Weight
109 – 128 mg
Ambient temperature
–40°C to +125°C with
Irms
current
Maximum part temperature
+140°C (ambient + temp rise).
Storage temperature
Component: –40°C to +140°C.
Tape and reel 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)
+25 to +125 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)
One per billion hours / one billion hours, calculated per Telcordia SR-332
Packaging
600 per 7″ reel; 2200 per 13″ reel. Plastic tape: 12 mm wide,
0.3 mm thick, 8 mm pocket spacing, 3.7 mm pocket depth
PCB washing
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 105-1
Revised 10/12/15
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 105-2
Chip Inductors – 1812CS Series (4532)
Typical Q vs Frequency
80
70
60
50
Typical L vs Frequency
1.8 µH
3.9 µH
40
33.0 µH
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
Frequency (MHz)
1
10
Frequency (MHz)
100
1000
B
overall
F
C
D
Pick and
place
material
I
H
A
G
J
F
E
terminal
Terminal wraparound:
approx 0.015/0,38 both ends
I
Recommended
Land Pattern
H
I
1,14
J
3,00 mm
A
max
4,95
B
max
3,81
C
max
3,43
D
ref
1,78
E
2,54
F
0,64
G
3,25
0.195 0.150 0.135 0.070 0.100 0.025 0.128 0.120 0.045 0.118 inches
3,05
Note:
Height dimension (C) is before optional solder application. For maximum
height dimension including solder, add 0.006 in / 0,152 mm.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 105-2
Revised 10/12/15
© Coilcraft Inc. 2017
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
