Document 1115-1
For Linear Technology
LT8697 switching regulator
Air Core Inductors
• DevelopedforLinearTechnologyLT8697monolithicstep-down
switching regulator designed to power 5V USB applications.
• Tight DCR tolerance: 5%
• Air core inductors feature high Q and high current ratings
Weight 0.42– 0.59 g
Terminations RoHS compliant tin-silver (96.5/3.5) over copper.
Ambient temperature –40°C to +125°C with Irms current, +125°C
to +140°C with derated current
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 ꢁTCLH +5 to +70 ppm/°C
Moisture Sensitivity Level ꢁMSLH 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time ꢁFITH / Mean Time Between Failures ꢁMTBFH
One per billion hours / one billion hours, calculated per Telcordia SR-332
Packaging 800/13″ reel Plastic tape: 24 mm wide, 0.3 mm thick,
12 mm pocket spacing, 6.1 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other
solvents, see Doc787_PCB_Washing.pdf
Q3
Part
Inductance2
±ꢀ5 ꢁnꢂH
SRF min4
ꢁGꢂzH
DCR ±±55
ꢁmOhmH
Irms6
ꢁAH
number1
Turns
typ
min
NA5931-AL_
NA5932-AL_
NA5933-AL_
NA5934-AL_
NA5935-AL_
NA5936-AL_
15
16
17
18
19
20
246
307
380
422
491
538
114
114
114
114
114
104
95
95
95
95
95
87
0.685
0.660
0.590
0.540
0.535
0.490
15.7
21.8
32.4
34.3
44.1
47.2
3.0
3.0
2.5
2.5
2.0
2.0
1. When ordering, please specify packaging code:
NA±936-ALD
3. Q tested at 50 MHz on an Agilent/HP 4291A Impedance Analyzer or
equivalent with a Coilcraft SMD-A fixture and correlation.
4. SRF tested on the Agilent/HP 8753D and a Coilcraft CCF1248 test fixture.
5. DCR tested on the Keithley 580 Micro Ohmmeter.
6. Current that causes a 15°C temperature rise from 25°C ambient.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”before soldering.
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape
(800 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 D instead.
2. Inductance tested at 50 MHz on an Agilent/HP 4191A Impedance Analyzer
or equivalent with a Coilcraft SMD-A fixture and correlation.
Document 1115-1 Revised 009/08/14
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Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2014
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.