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0806SQ, 0807SQ, 0908SQ Series

Square Air Core Inductors

RoHS compliant halogen free
Coilcraft 0806SQ, 0807SQ, 0908SQ Series square air core inductors have extremely high Q factors and very tight inductance tolerances, making them suitable for narrowband RF amplifier matching and tuning applications. High-reliability versions are available for space, military, and other critical applications.
  • Inductance values from 5.5 nH to 27.3 nH
  • Exceptionally high Q – up to 130
  • Ultra-miniature, yet handles up to 4.4 Amps current
  • Flat top and bottom for reliable pick and place and mechanical stability
  • For higher inductance values, consider the 1111SQ1515SQ, 2222SQ or 2929SQ
  • Solder coated leads ensure reliable soldering

Buy Now:
Count Unit price
1 $1.17
250 $0.95
500 $0.77
1000 $0.62
2000 $0.44
6000 $0.31
10000 $0.22

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Designer's Kit:
Kit Values Price
C424 20 (10 of each) $45.00
C424-2 20 (10 of each) $70.00

Specifications

Electrical specifications at 25°C.

0806SQ Series

Part number 1 Inductance (nH) 2 Tolerance (%) 3 Q typ
@ 400 MHz 4
SRF typ (GHz) 5 DCR max (mΩ) 6 Irms (A) 7
0806SQ-5N5_L_ 5.5 2,5 60 4.9 3.4 2.9
0806SQ-6N0_L_ 6.0 2,5 64 5.2 6.0 2.9
0806SQ-8N9_L_ 8.9 2,5 90 4.3 7.0 2.9
0806SQ-12N_L_ 12.3 2,5 90 4.8 8.0 2.9
0806SQ-16N_L_ 15.7 2,5 90 4.4 9.0 2.9
0806SQ-19N_L_ 19.4 2,5 90 4.0 10.0 2.9

0807SQ Series

Part number 1 Inductance (nH) 2 Tolerance (%) 3 Q typ
@ 400 MHz 4
SRF typ (GHz) 5 DCR max (mΩ) 6 Irms (A) 7
0807SQ-6N9_L_ 6.9 2,5 100 4.6 6.0 2.7
0807SQ-10N_L_ 10.2 2,5 100 4.0 7.0 2.7
0807SQ-11N_L_ 11.2 2,5 90 3.6 6.3 2.7
0807SQ-14N_L_ 13.7 2,5 100 4.3 8.0 2.7
0807SQ-17N_L_ 17 2,5 100 4.0 9.0 2.7
0807SQ-22N_L_ 22 2,5 100 3.5 10.0 2.7

0908SQ Series

Part number 1 Inductance (nH) 2 Tolerance (%) 3 Q typ
@ 400 MHz 4
SRF typ (GHz) 5 DCR max (mΩ) 6 Irms (A) 7
0908SQ-8N1_L_ 8.1 2,5 130 5.2 6.0 4.4
0908SQ-12N_L_ 12.1 2,5 130 4.3 7.0 4.4
0908SQ-14N_L_ 14.7 2,5 90 3.0 7.2 4.4
0908SQ-17N_L_ 16.6 2,5 130 3.4 8.0 4.4
0908SQ-22N_L_ 21.5 2,5 130 3.7 9.0 4.4
0908SQ-23N_L_ 23 2,5 120 2.6 10.0 4.4
0908SQ-25N_L_ 25 2,5 130 2.5 10.0 4.4
0908SQ-27N_L_ 27.3 2,5 130 3.2 10.0 4.4
Notes
  1. When ordering, please specify tolerancetermination and packaging codes: e.g. 0908SQ-27NJLD
  2. Inductance measured at 400 MHz, 0.1 Vrms, 0 A using an Agilent/HP 4287A LCR meter or equivalent with a Coilcraft CCF1166 test fixture and Coilcraft-provided correlation pieces.
  3. Tolerances in bold are stocked for immediate shipment
  4. Q measured at 400 MHz using an Agilent/HP 4291A impedance analyzer.
  5. SRF measured using an Agilent/HP 8753D network analyzer or equivalent and a Coilcraft SMD-D test fixture. Details
  6. DCR measured at 25°C on a micro-ohmmeter. 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.

Tolerance:

  • = 2%, = 5% (Table shows stock tolerances in bold.)

Termination:

  • L = RoHS compliant tin-silver (96.5/3.5) over copper.
  • T = RoHS tin-silver-copper (95.5/4/0.5) over copper. (Special order, added cost)
  • S = non-RoHS tin-lead (63/37) over copper. (Special order, added cost)

Packaging:

  • C = 7″ machine-ready reel. EIA-481 embossed plastic tape. Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked.
Environmental
Environmental:
RoHS compliant , halogen free
Ambient temperature range:
−40°C to +125°C with Irms current.
Storage temperature range:
Component: −40°C to +145°C
Tape and reel packaging: −40°C to +80°C
Maximum part temperature:
+145°C (Ambient + temperature rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

L vs Frequency

Q vs Frequency

L vs Frequency

Q vs Frequency

L vs Frequency

Q vs Frequency

Physical characteristics

sq_springd.gif
 
Part number A B C D E F Weight
(mg)
0806SQ-5N5 1,364 ±0,102 1,829 ±0,254 1,397 ±0,102 0,962 2,6 0,51 9.9
0806SQ-6N0 1,295 ±0,102 1,829 ±0,254 1,397 ±0,102 1,02 2,6 0,51 6.5
0806SQ-8N9 1,626 ±0,152 1,829 ±0,254 1,397 ±0,102 1,32 2,6 0,51 10.8
0806SQ-12N 1,930 ±0,152 1,829 ±0,254 1,397 ±0,102 1,63 2,6 0,51 13.6
0806SQ-16N 2,286 ±0,152 1,829 ±0,254 1,397 ±0,102 1,96 2,6 0,51 16.1
0806SQ-19N 2,591 ±0,152 1,829 ±0,254 1,397 ±0,102 2,29 2,6 0,51 18.7
0807SQ-6N9 1,295 ±0,102 1,829 ±0,254 1,524 ±0,254 1,02 2,6 0,51 9.1
0807SQ-10N 1,626 ±0,152 1,829 ±0,254 1,524 ±0,254 1,32 2,6 0,51 11.5
0807SQ-11N 1,549 ±0,152 1,829 ±0,254 1,524 ±0,254 1,24 2,6 0,51 11.5
0807SQ-14N 1,930 ±0,152 1,829 ±0,254 1,524 ±0,254 1,63 2,6 0,51 14.0
0807SQ-17N 2,286 ±0,152 1,829 ±0,254 1,524 ±0,254 1,96 2,6 0,51 16.8
0807SQ-22N 2,591 ±0,152 1,829 ±0,254 1,524 ±0,254 2,29 2,6 0,51 19.4
0908SQ-8N1 1,473 ±0,152 2,134 ±0,152 1,829 ±0,203 1,12 2,8 0,64 12.8
0908SQ-12N 1,854 ±0,152 2,134 ±0,152 1,829 ±0,203 1,45 2,8 0,64 16.9
0908SQ-14N 1,549 ±0,152 2,134 ±0,152 1,829 ±0,203 1,24 2,8 0,64 13.5
0908SQ-17N 2,210 ±0,152 2,134 ±0,152 1,829 ±0,203 1,83 2,8 0,64 21.1
0908SQ-22N 2,565 ±0,152 2,134 ±0,152 1,829 ±0,203 2,18 2,8 0,64 24.7
0908SQ-23N 2,235 ±0,152 2,134 ±0,152 1,829 ±0,203 1,90 2,8 0,64 19.2
0908SQ-25N 2,972 ±0,152 2,134 ±0,152 1,829 ±0,203 2,57 2,8 0,64 27.6
0908SQ-27N 2,972 ±0,152 2,134 ±0,152 1,829 ±0,203 2,57 2,8 0,64 28.7
Dimensions are in mm

Tape and Reel specification

tapereel_pl.gif
 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
Part number 7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_ah.gif
0806SQ-5N5 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,42 0,254
0806SQ-6N0 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,42 0,254
0806SQ-8N9 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,55 0,254
0806SQ-12N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,52 0,254
0806SQ-16N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,50 0,254
0806SQ-19N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,55 0,254
0807SQ-6N9 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,60 0,254
0807SQ-10N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,57 0,254
0807SQ-11N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,55 0,254
0807SQ-14N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,60 0,254
0807SQ-17N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,68 0,254
0807SQ-22N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,68 0,254
0908SQ-8N1 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 2,01 0,254
0908SQ-12N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,96 0,254
0908SQ-14N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,52 0,254
0908SQ-17N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 2,01 0,254
0908SQ-22N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,98 0,254
0908SQ-23N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 1,98 0,254
0908SQ-25N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 2,01 0,254
0908SQ-27N 2000 7500* 178/330 60/100 13 18,4 12,4 12 4 4 2 2,01 0,254
* Special order

General specification

Packaging:
2000/7″reel; 7500/13″ reel Plastic tape: 12 mm wide, 0.254 mm thick, 4 mm pocket spacing
Temperature coefficient of inductance:
+5 to +70 ppm/°C

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
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
Refer to Soldering Coilcraft Components before soldering.
Recommended Pick & Place Nozzle:
OD: 0.054″; ID: 0.031″
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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