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1812SMS-R12GLC Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Midi Spring Air Core Inductors
Document 184-1
Midi Spring® Air Core Inductors
 Part number1
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_
 Inductance2
(nH)
22
27
33
39
47
56
68
82
100
120
150
Percent
 tolerance3
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
• 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 termina-
tions 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
 Q4
typ   min
135
100
135
100
130
100
135
100
135
100
125
100
120
100
120
100
115
100
125
100
145
100
Test freq.
(MHz)
150
150
150
150
150
150
150
150
150
150
150
 SRF min5
(GHz)
3.2
2.7
2.5
2.1
2.1
1.5
1.5
1.3
1.2
1.1
0.75
 DCR max6
(mOhm)
4.2
4.0
4.8
4.4
5.6
6.2
8.2
9.4
12.3
17.3
33.0
 Irms7
(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 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 05/18/12
© Coilcraft Inc. 2012
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.