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Document 990-1
Square Air Core Inductors
–
1111SQ
Halogen
Free
• Excellent Q factors – 210 at 400 MHz!
• Inductance values from 27 to 47 nH
• Flat top and bottom for reliable pick and place and mechanical
stability
Terminations RoHS compliant tin-silver over copper
Environmental RoHS compliant, halogen free
Weight 34 – 50 mg
Ambient temperature –40°C to +125°C with Irms current
Maximum part temperature +145°C (ambient + temp rise).
Storage temperature Component: –40°C to +145°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)
Packaging 600/7″ reel; 2500/13″ reel; Plastic tape: 12 mm wide,
0.35 mm thick, 8 mm pocket spacing, 3.05 mm pocket depth
Recommended pick and place nozzle: OD: 0.054″; ID: 0.031″
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Test
frequency
(MHz)
Inductance2
(nH)
Percent
tolerance
Q3
typ
SRF min4
(GHz)
Irms5
(A)
DCR (mOhm)
Part number1
typ
max
1111SQ-27N_E_
1111SQ-30N_E_
1111SQ-33N_E_
1111SQ-36N_E_
1111SQ-39N_E_
27
30
33
36
39
5,2
5,2
5,2
5,2
5,2
200
200
200
200
200
400
400
400
400
400
2.60
2.40
2.30
2.30
2.20
7.0
7.2
8.3
8.5
8.7
8.1
8.3
9.5
9.8
10.0
5.5
5.5
4.8
4.8
4.8
1111SQ-43N_E_
1111SQ-47N_E_
43
47
5,2
5,2
200
200
400
400
2.20
2.20
9.4
9.8
10.8
11.3
4.4
4.4
1. When ordering, specify tolerance, termination and packaging codes:
1111SQ-47NJEC
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). Quantities less than full reel available: in tape (not
machine ready) or with leader and trailer ($25 charge).
D = 13″ machine-ready reel. EIA-481 embossed plastic tape (2500 parts per full reel). Factory order only, not stocked.
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.
2. Inductance measured at specified test frequency, 0.1 Vrms, 0 A using an Agilent/HP 4286A LCR meter or equivalent with a Coilcraft CCF1191C test
fixture.
3. Q measured at specified test frequency, using an Agilent/HP 4291A impedance analyzer or equivalent.
4. SRF measured using an Agilent/HP 8753 network analyzer or equivalent with a Coilcraft CCF1248 test fixture.
5. 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
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Document 990-1 Revised 12/01/21
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2021
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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