Document 1115-1 Air Core Inductors For Linear Technology LT8697 switching regulator • Developed for Linear Technology LT8697 monolithic step-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 (TCL) +5 to +70 ppm/°C Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 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 Part number1 Inductance2 Turns NA5931-AL_ NA5932-AL_ NA5933-AL_ NA5934-AL_ NA5935-AL_ NA5936-AL_ 15 16 17 18 19 20 ±2% (nH) 246 307 380 422 491 538 Q3 typ min SRF 11495 11495 11495 11495 11495 10487 1. When ordering, please specify packaging code: NA5936-ALD 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. min4 (GHz) DCR ±5%5 (mOhm) 0.685 0.660 0.590 0.540 0.535 0.490 15.7 21.8 32.4 34.3 44.1 47.2 Irms6 (A) 3.0 3.0 2.5 2.5 2.0 2.0 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. 2. Inductance tested at 50 MHz on an Agilent/HP 4191A Impedance Analyzer or equivalent with a Coilcraft SMD-A fixture and correlation. US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 1115-1 Revised 009/08/14 © 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. Document 1115-2 Air Core Inductors for Linear Technology LT8697 L vs Frequency Q vs Frequency 1000 200 900 246 nH 307 nH 380 nH 538 nH 422 nH 491 nH 538 nH 491 nH 422 nH 380 nH 307 nH 246 nH 700 600 500 400 150 Q factor Inductance (nH) 800 100 300 50 200 100 0 10 1 1000 100 0 1 10 100 1000 Frequency (MHz) Frequency (MHz) Typical Irms Derating 120 110 90 80 70 60 50 40 30 25°C Percent of rated Irms 100 20 10 0 -40 -20 0 20 40 60 80 100 120 140 Ambient temperature (°C) Dimensions are in inches mm US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 1115-2 Revised 09/08/14 © 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.