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springspring

Midi Spring®
Air Core Inductors

New RoHS part numbers are shown. Lead was removed from terminations. The next to the last character is now L to indicate RoHS compliance. (View old data sheet.)

  • Inductance values from 22 nH to 120 nH
  • Exceptionally high Q even at low frequencies; Handles up to 3.5 Amps current
  • Tight tolerance can eliminate circuit tuning (tolerances as low as 2%)
  • AEC-200 Grade 1 (-40°C to +125°C)
  • Flat top jacket for mechanical stability and reliable pick and place operations
  • Solder coated leads ensure reliable soldering
  • RoHS-compliant 260°C compatible. Terminations: tin-silver over copper
  • COTS Plus tin-silver-copper and tin-lead terminations available
  • Samples of all values are available in Coilcraft Designer's Kit C318

Photo    Pricing    Materials declaration    PDF data sheet

SPECIFICATIONS

Q vs Frequency     L vs Frequency    Current derating    Color coding   

Dimensions    Tape and reel    3D model     S-Parameters  

Transmission Line models    Modelithics™ substrate scalable models
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, please specify tolerance, termination and packaging codes: e.g. 1812SMS-R12JLC
Tolerance: G = 2%, J = 5% (Table above shows stock tolerances in bold.)
  Termination: L = RoHS compliant tin-silver (96.5/3.5) over copper.
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) over copper or
S = non-RoHS tin-lead (63/37) over copper.
  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 at 150 MHz on an Agilent/HP 4291A with a 16193 fixture and Coilcraft-supplied correlation pieces.
3 Tolerances in bold are stocked for immediate shipment.
4 SRF tested with an Agilent/HP 8753D network analyzer and a Coilcraft CCF1248 test fixture. Details
5 DCR tested on a Cambridge Technology Model 510 Micro-ohmmeter.
6 Irms: Current that causes a 15°C temperature rise from 25°C ambient. Details
7 Ambient temperature range: –40°C to +125°C with Irms current.
+125°C to +140°C with derated current. Derating curve
8 Storage temperature range: Component: –40°C to +125°C
T&R packaging: –40°C to +80°C
9 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
10 Electrical specifications at 25°C.
11 Temperature coefficient of inductance: +5 to +70 ppm/°C.
Refer to Soldering Coilcraft Components before soldering.
22 nH spring, 27 nH spring, 33 nH spring, 39 nH spring, 47 nH spring, 56 nH spring, 68 nH spring, 82 nH spring, 100 nH spring, 120 nH spring
22 nH spring, 27 nH spring, 33 nH spring, 39 nH spring, 47 nH spring, 56 nH spring, 68 nH spring, 82 nH spring, 100 nH spring, 120 nH spring
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Updated: December 21, 2011