1812SMS

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
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) +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
Recommended pick and place nozzle: OD: 0.110″; ID: 0.091″
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Part number1
Inductance2
(nH)
Percent
tolerance3
Q4
typ min
Test freq.
(MHz)
SRF
min5
(GHz)
DCR
max6
(mOhm)
Irms7
(A)
1812SMS-22N_L_22
1812SMS-27N_L_27
1812SMS-33N_L_33
1812SMS-39N_L_39
1812SMS-47N_L_47
5,2
5,2
5,2
5,2
5,2
135100
135100
130100
135100
135100
150
150
150
150
150
3.2
2.7
2.5
2.1
2.1
4.2
4.0
4.8
4.4
5.6
3.0
3.5
3.0
3.0
3.0
1812SMS-56N_L_56
1812SMS-68N_L_68
1812SMS-82N_L_82
1812SMS-R10_L_100
1812SMS-R12_L_120
5,2
5,2
5,2
5,2
5,2
125100
120100
120100
115100
125100
150
150
150
150
150
1.5
1.5
1.3
1.2
1.1
6.2
8.2
9.4
12.3
17.3
3.0
2.5
2.5
1.7
1.5
1812SMS-R15_L_150
5,2
145100
150
0.75
33.0
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. This
information is for reference only and does not represent absolute
maximum ratings.
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.
Document 184-1 Revised 10/13/15
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
Typical Q vs Frequency
250
250
200
200
22 nH
150
68 nH
100
39 nH
22 nH
50
0
1
10
100
Frequency (MHz)
1000
10000
Q factor
Inductance (nH)
120 nH
39 nH
150
68 nH
120 nH
100
50
0
1
10
Dimensions are in
100
Frequency (MHz)
1000
10000
inches
mm
Document 184-2 Revised 10/13/15
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