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1111SQ
Square Air Core Inductors

  • Exceptionally high Q – up to 200 at 400 MHz
  • Inductance values from 27 to 47 nH
  • Flat top and bottom for reliable pick and place and mechanical stability
  • Solder coated leads ensure excellent solderability
  • For lower inductance values, consider the 0806SQ, 0807SQ and 0908SQ
  • For higher inductance values, consider the 1515SQ, 2222SQ and 2929SQ
  • RoHS-compliant, halogen free.  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 C457

SPECIFICATIONS


Part number1
Click to get parts
Inductance2
(nH)
Percent
tolerance3
Q typ4 Test
frequency
(MHz)
SRF min5
(GHz)
DCR (mOhm)6 Irms7
(A)
typ max
1111SQ-27N_E_ 27 5,2 200 400 2.6 7.0 8.1 5.5
1111SQ-30N_E_ 30 5,2 200 400 2.4 7.2 8.3 5.5
1111SQ-33N_E_ 33 5,2 200 400 2.3 8.3 9.5 4.8
1111SQ-36N_E_ 36 5,2 200 400 2.3 8.5 9.8 4.8
1111SQ-39N_E_ 39 5,2 200 400 2.2 8.7 10.0 4.8
1111SQ-43N_E_ 43 5,2 200 400 2.2 9.4 10.8 4.4
1111SQ-47N_E_ 47 5,2 200 400 2.2 9.8 11.3 4.4
1 When ordering, please specify tolerance, termination and packaging codes: e.g. 2929SQ-501JEC
  Tolerance: G = 2%, J = 5% (Table shows stock tolerances in bold.)
  Termination: E = 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  (600 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 (2500 parts per full reel). Factory order only, not stocked.
2 Inductance measured at specified test frequency, 0.1 Vrms, 0 A using an Agilent/HP 4286A LCR meter with a Coilcraft CCF1191C test fixture.
3 Tolerances in bold are stocked for immediate shipment
4 Q measured at specified test frequency, using an Agilent/HP 4291A impedance analyzer.
5 SRF measured using an Agilent/HP 8753 network analyzer and a Coilcraft CCF1143 test fixture.
6 DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
7 Irms: Current that causes a 20°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.
8 Ambient temperature range: −40°C to +125°C with Irms current.
9 Storage temperature range: Component: −40°C to +145°C
Tape and reel packaging: −40°C to +80°C
10 Maximum part temperature: +145°C (Ambient + temperature rise)
11 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.
12 Electrical specifications at 25°C.
13 Temperature coefficient of inductance: +5 to +70 ppm/°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested with pure water or alcohol only. Other solvents.

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Updated: April 10, 2017