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Document 184-1

Midi Spring Air Core Inductors®

AEC• 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

Q200 +125°C

Terminations RoHS compliant tin-silver over copper. Otherterminations available at additional cost.
Weight 0.10 – 0.16 g
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)
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 additionalaqueous wash. See Doc787_PCB_Washing.pdf.

Q4typ   min

Test freq.
(MHz)

SRF min5(GHz)

DCR max6(mOhm)

Irms7(A)

100
100
100
100
100

150
150
150
150
150

3.2
2.7
2.5
2.1
2.1

4.2
4.0
4.8
4.4
5.6

3.0
3.5
3.0
3.0
3.0

125
120
120
115
125

100
100
100
100
100

150
150
150
150
150

1.5
1.5
1.3
1.2
1.1

6.2
8.2
9.4
12.3
17.3

3.0
2.5
2.5
1.7
1.5

145

100

150

0.75

33.0

1.2		
Part number1

Inductance2(nH)

Percenttolerance3

1812SMS-22N_L_
1812SMS-27N_L_
1812SMS-33N_L_
1812SMS-39N_L_
1812SMS-47N_L_

2227333947

5,25,25,25,25,2135135
130135135

1812SMS-56N_L_
1812SMS-68N_L_
1812SMS-82N_L_
1812SMS-R10_L_
1812SMS-R12_L_

56
6882
100
1205,25,25,25,25,2

1812SMS-R15_L_

150

5,21. When ordering, specify tolerance, termination and packaging codes:
1812SMS-R15GLC
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. Quantities less than full
reel available: in tape (not machine ready) or withleader and trailer ($25 charge).
B = Less than full reel. In an effort to simplify our partnumbering system, Coilcraft is eliminating the needfor 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 plastictape. Factory order only, not stocked, 2000 parts perfull reel.

2. Inductance tested at 150 MHz on an Agilent/HP 4286A LCR meter orequivalent 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 withan Agilent/HP 16193 test fixture or equivalents.
5. SRF tested on the Agilent/HP 8753D Network Analyzer or equivalentand a Coilcraft CCF1248 test fixture.
6. DCR tested on the Cambridge Technology Model 510 Micro-ohmmeteror equivalent.
7. Current that causes a 15°C temperature rise from 25°C ambient. This
information is for reference only and does not represent absolutemaximum 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.

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

Document 184-1

Revised 12/02/21© Coilcraft Inc. 2021
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 184-2
Designer’s Kit C318 contains 12 each of all 5% values.
Designer’s Kit C318-2 contains12 each of all 2% values.

Midi Spring Air Core Inductors®

Typical L vs Frequency
250

250

200200

22 nH

150

68 nH

10039 nH
22 nH

5001101000

100Frequency (MHz)10000

Q factor

120 nHInductance (nH)

AEC

Q200 +125°C

Typical Q vs Frequency

39 nH

150

68 nH
120 nH
100500110Dimensions are in

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

100Frequency (MHz)

1000

10000

inchesmm

Document 184-2

Revised 12/02/21© Coilcraft Inc. 2021
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.