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.
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, 4.2 mm pocket depth
PCB washing
Only pure water or alcohol recommended
Part number
1
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_
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
2
typ
135
135
130
135
135
125
120
120
115
125
145
Q
2
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
4
(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
5
(mOhm)
4.2
4.0
4.8
4.4
5.6
6.2
8.2
9.4
12.3
17.3
33.0
Irms
6
(A)
3.0
3.5
3.0
3.0
3.0
3.0
2.5
2.5
1.7
1.5
1.2
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 and Q tested on the Agilent/HP 4291A with the 16193 fixture
and correlation.
3. Tolerances in bold are stocked for immediate shipment.
4. SRF tested on the Agilent/HP 8753D and the SMD-D test fixture.
5. DCR tested on the Cambridge Technology Model 510 Micro-ohmmeter.
6. Current that causes a 15°C temperature rise from 25°C ambient.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
For part marking data see Color Coding section.
Specifications subject to change without notice.
Please check our website for latest information.
Document 184-1
Revised 10/29/08
© Coilcraft, Inc. 2009
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