Document 184-1
Midi Spring Air Core Inductors
®
• Air core inductors feature high Q and current handling
• Acrylic top provides a flat surface for pick and place
• Solder coated leads ensure reliable soldering
Weight
0.10 – 0.16 g
Terminations
RoHS compliant tin-silver over copper. Other
terminations available at additional cost.
Ambient temperature
–40°C to +125°C with
Irms
current, +125°C
to +140°C with derated current
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)
+5 to +70 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
500/7″ reel; 2000/13″ reel Plastic tape: 12 mm wide,
0.3 mm thick, 8 mm pocket spacing, 4.33 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other
solvents, see Doc787_PCB_Washing.pdf
Part
number
1
Inductance
2
(nH)
22
27
33
39
47
56
68
82
100
120
150
Percent
tolerance
3
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
Q
4
typ
135
135
130
135
135
125
120
120
115
125
145
min
100
100
100
100
100
100
100
100
100
100
100
Test freq.
(MHz)
150
150
150
150
150
150
150
150
150
150
150
SRF min
5
(GHz)
3.2
2.7
2.5
2.1
2.1
1.5
1.5
1.3
1.2
1.1
0.75
DCR max
6
(mOhm)
4.2
4.0
4.8
4.4
5.6
6.2
8.2
9.4
12.3
17.3
33.0
Irms
7
(A)
3.0
3.5
3.0
3.0
3.0
3.0
2.5
2.5
1.7
1.5
1.2
1812SMS-22N_L_
1812SMS-27N_L_
1812SMS-33N_L_
1812SMS-39N_L_
1812SMS-47N_L_
1812SMS-56N_L_
1812SMS-68N_L_
1812SMS-82N_L_
1812SMS-R10_L_
1812SMS-R12_L_
1812SMS-R15_L_
1. When ordering, specify
tolerance, termination
and
packaging
codes:
1812SMS-R12GLC
Tolerance: G
= 2%
J
= 5%
Termination: L
= RoHS compliant tin-silver (96.5/3.5) over copper.
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, 500 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, 2000 parts per
full reel.
2. Inductance tested at 150 MHz on an Agilent/HP 4286A LCR meter or
equivalent with a Coilcraft SMD-A test fixture and correlation.
3. Tolerances in bold are stocked for immediate shipment.
4. Q tested at 150 MHz on an Agilent/HP 4291A Impedance Analyzer with
an Agilent/HP 16193 test fixture or equivalents.
5. SRF tested on the Agilent/HP 8753D Network Analyzer or equivalent
and a Coilcraft CCF1248 test fixture.
6. DCR tested on the Cambridge Technology Model 510 Micro-ohmmeter
or equivalent.
7. Current that causes a 15°C temperature rise from 25°C ambient.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
For part marking data see www.coilcraft.com/colrcode.cfm.
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 184-1
Revised 02/19/13
© Coilcraft Inc. 2013
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 184-2
Designer’s Kit C318
contains 12 each of all 5% values.
Designer’s Kit C318-2
contains12 each of all 2% values.
Midi Spring Air Core Inductors
®
Typical L vs Frequency
250
200
Typical Q vs Frequency
250
22 nH
200
Inductance (nH)
120 nH
150
Q factor
68 nH
39 nH
22 nH
150
39 nH
68 nH
120 nH
100
100
50
50
0
1
10
100
1000
10000
0
Frequency (MHz)
1
10
Frequency (MHz)
100
1000
10000
Irms Derating
120
110
100
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
Ambient temperature (°C)
25°C
Dimensions are in
inches
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 184-2
Revised 02/19/13
© Coilcraft Inc. 2013
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.
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