AIR CORE INDUCTORS High-Reliability Air Core Inductors ML439RAT ML470RAT ■ Small air core inductors feature high Q and tight tolerances ■ High temperature materials allow operation in ambient temperatures up to 155°C. Terminations Tin-silver over copper. Ambient temperature –55°C to +125°C with Imax current, +125°C to +155°C with derated current Storage temperature Component: –55°C to +155°C. 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) Enhanced crush-resistant packaging ML439RAT: 700/7″ reel Plastic tape: 12 mm wide, 0.32 mm thick, 8 mm pocket spacing, 3.3 mm pocket depth ML470RAT: 500/7″ reel Plastic tape: 16 mm wide, 0.28 mm thick, 8 mm pocket spacing, 3.4 mm pocket depth PCB washing Only pure water or alcohol recommended SRF DCR L2 Percent Q3 min4 max5 Imax Weight Part number1 Turns (nH) tol min (GHz) (mOhm) (A) (mg) ML439RAT2N5KLZ 1 2.5 10 145 12.5 1.1 4 31 ML439RAT5N0_LZ 2 5.0 5,2 140 6.5 1.8 4 42 ML439RAT8N0_LZ 3 8.0 5,2 140 5.0 2.6 4 52 ML439RAT13N_LZ 4 12.5 5,2 137 3.3 3.4 4 65 ML439RAT19N_LZ 5 18.5 5,2 132 2.5 3.9 4 78 ML470RAT18N_LZ 6 17.5 5,2 100 2.2 4.5 4 100 ML470RAT22N_LZ 7 22.0 5,2 102 2.1 5.2 4 110 ML470RAT28N_LZ 8 28.0 5,2 105 1.8 6.0 4 118 ML470RAT36N_LZ 9 35.5 5,2 112 1.5 6.8 4 133 ML470RAT43N_LZ 10 43.0 5,2 106 1.2 7.9 4 147 1. When ordering, please specify tolerance and testing codes: ML470RAT43NGLZ Tolerance: G = 2% J = 5% Testing: Z = COTS H = Screening per Coilcraft CP-SA-10001 N = Screening per Coilcraft CP-SA-10003 2. Inductance measured at 150 MHz on an Agilent/HP 4286A or equivalent with a Coilcraft SMD-A test fixture and correlation. 3. Q measured at 150 MHz on an Agilent/HP 4291A or equivalent with a 16193A test fixture or equivalent. 4. SRF measured on an Agilent/HP 8753ES network analyzer or equivalent with a Coilcraft CCF1268 test fixture. Parts with SRF >5 GHz are verified to >5 GHz in screening 5. DCR measured on a Keithley 580 Micro-Ohmmeter or equivalent. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Dimensions are in ® Specifications subject to change without notice. 1102 Silver Lake Road Cary IL 60013 © Coilcraft, Inc. 2011 inches mm Document ML107-1 Phone 800-981-0363 Fax 847-639-1508 Revised 09/08/11 E-mail [email protected] Web www.coilcraft-cps.com AIR CORE INDUCTORS ML439RAT / ML470RAT Air Core Inductors L vs Frequency – ML439RAT L vs Frequency – ML470RAT 25 60 43.0 nH 55 50 18.5 nH Inductance (nH) Inductance (nH) 20 15 12.5 nH 10 8.0 nH 5.0 nH 5 100 35.5 nH 40 35 28.0 nH 30 22.0 nH 25 20 2.5 nH 0 45 17.5 nH 15 200 400 600 10 1000 100 Frequency (MHz) Q vs Frequency – ML439RAT 600 1000 135 210 130 2.5 nH 125 200 17.5 nH 120 5.0 nH 180 170 8.0 nH 160 Q factor 190 Q factor 400 Q vs Frequency – ML470RAT 220 22.0 nH 115 28.0 nH 35.5 nH 110 105 12.5 nH 43.0 nH 100 150 140 130 200 Frequency (MHz) 95 18.5 nH 100 200 400 600 1000 90 100 Frequency (MHz) 200 400 600 1000 Frequency (MHz) Typical Current Derating 120 110 90 80 70 60 50 40 25°C Percent of rated Irms 100 30 20 10 0 -55 -40 -20 0 20 40 60 80 100 120 140 160 Ambient temperature (°C) ® Specifications subject to change without notice. 1102 Silver Lake Road Cary IL 60013 © Coilcraft, Inc. 2011 Document ML107-2 Phone 800-981-0363 Fax 847-639-1508 Revised 09/08/11 E-mail [email protected] Web www.coilcraft-cps.com