Midi Spring
®
Air Core Inductors
Document 184-1
Document 184-1 Revised 10/13/15
Inductance
2
Percent
Q
4
Test freq.
SRF min
5
DCR max
6
Irms
7
Part number
1
(nH)
tolerance
3
typ min (MHz) (GHz) (mOhm) (A)
1812SMS-22N_L_ 22 5,2 135 100 150 3.2 4.2 3.0
1812SMS-27N_L_ 27 5,2 135 100 150 2.7 4.0 3.5
1812SMS-33N_L_ 33 5,2 130 100 150 2.5 4.8 3.0
1812SMS-39N_L_ 39 5,2 135 100 150 2.1 4.4 3.0
1812SMS-47N_L_ 47 5,2 135 100 150 2.1 5.6 3.0
1812SMS-56N_L_ 56 5,2 125 100 150 1.5 6.2 3.0
1812SMS-68N_L_ 68 5,2 120 100 150 1.5 8.2 2.5
1812SMS-82N_L_ 82 5,2 120 100 150 1.3 9.4 2.5
1812SMS-R10_L_ 100 5,2 115 100 150 1.2 12.3 1.7
1812SMS-R12_L_ 120 5,2 125 100 150 1.1 17.3 1.5
1812SMS-R15_L_ 150 5,2 145 100 150 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.
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.
• 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