AIR CORE INDUCTORS AirCoreInductors for Critical Applications ST350RAT ST394RAT ■High Q over a wide range of frequencies ■Acrylic jacket provides a flat top for pick and place ■Solder coated leads ensure reliable soldering Terminations Tin-silver over copper. Other terminations available at additional cost. Ambient temperature –40°C to +125°C with Imax current, +125°C to +145°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) Packaging ST350RAT: 500 per 7″ reel Plastic tape: 8 mm wide, 0.3 mm thick, 4 mm pocket spacing, 1.5 mm pocket depth ST394RAT: 500 per 7″ reel Plastic tape: 12 mm wide, 0.3 mm thick, 4 mm pocket spacing, 1.6 mm pocket depth SRF DCR L2 Percent Q3 min4 max5 Imax Part number1 Turns(nH) tol min (GHz)(mOhm) (A) ST350RAT1N7KLZ2 1.65 10 10010 4.0 1.6 ST350RAT2N6JLZ3 2.55 5 100 8.2 5.0 1.6 ST350RAT3N9_LZ4 3.85 5,2 100 7.5 6.0 1.6 ST350RAT5N4_LZ5 5.40 5,2 100 7.0 8.0 1.6 ST394RAT5N6_LZ6 5.60 5,2 100 6.5 9.0 1.6 ST394RAT7N2_LZ7 7.15 5,2 100 6.0 10 1.6 ST394RAT8N8_LZ8 8.80 5,2 100 6.0 12 1.6 ST394RAT9N9_LZ9 9.85 5,2 100 5.2 13 1.6 ST394RAT13N_LZ10 12.55 5,2 100 4.6 14 1.6 1. When ordering, specify tolerance, termination and testing codes: ST394RAT10GLZ Tolerance: G=2% J = 5% Termination:L= RoHS compliant tin-silver over copper. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Testing:Z=COTS H= Screening per Coilcraft CP-SA-10001 2. Inductance measured at 800 MHz on an Agilent/HP 4286A or equivalent with a Coilcraft SMD-A test fixture and correlation. 3. Q measured at 800 MHz on an Agilent/HP 4291A or equivalent with a 16193A test fixture or equivalent. 4. SRF measured on an Agilent/HP 8753ES 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. Suggested Land Patterns Dimensions are in ® Specifications subject to change without notice. Please check our website for latest information. 1102 Silver Lake Road Cary IL 60013 © Coilcraft, Inc. 2011 inches mm Document ST163-1 Revised 10/24/11 Phone 800-981-0363 Fax 847-639-1508 E-mail [email protected] Web www.coilcraft-cps.com AIR CORE INDUCTORS ST350RAT/ST394RAT Air Core Inductors L vs Frequency – ST394RAT Series 14 14 12 12 10 10 8 6 5.40 nH 4 3.85 nH 2 2.55 nH 1.65 nH 0 100 7.15 nH 6 5.60 nH 4 100 1000 Frequency (MHz) 250 5.40 nH 150 100 7.15 nH 8.80 nH 5.60 nH 12.55 nH 9.85 nH 200 Q factor Q factor 8.80 nH Q vs Frequency – ST394RAT Series 2.55 nH 1.65 nH 3.85 nH 200 9.85 nH 8 0 Frequency (MHz) 250 12.55 nH 2 1000 Q vs Frequency – ST350RAT Series 150 100 50 50 0 Inductance (nH) Inductance (nH) L vs Frequency – ST350RAT Series 100 0 1000 100 Frequency (MHz) 1000 Frequency (MHz) Typical Current 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) ® Specifications subject to change without notice. Please check our website for latest information. 1102 Silver Lake Road Cary IL 60013 © Coilcraft, Inc. 2011 Document ST163-2 Revised 10/24/11 Phone 800-981-0363 Fax 847-639-1508 E-mail [email protected] Web www.coilcraft-cps.com