Document 404-1 Low Profile Mini Spring™ Inductors • Only 2 mm tall • High Q over a wide range of frequencies • Low DCR and excellent current handling capability Designer’s Kit C394 contains 10 samples each 5% part Designer’s Kit C394-2 contains 10 samples each 2% part Terminations RoHS compliant tin-silver over copper. Other terminations available at additional cost. Weight 48 – 130 g 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. 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 1000/7″reel; 3500/13″ reel Plastic tape: 2 mm wide, 0.23 mm thick, 8 mm pocket spacing, 2.2 mm pocket depth PCB washing Only pure water or alcohol recommended Part number1 Turns 1508-5N5_L_ 3 1508-9N0_L_ 4 1508-13N_L_ 5 2508-16N_L_ 7 2508-18N_L_ 8 2508-23N_L_ 9 2508-27N_L_ 10 L2 (nH) % tol3 Q2 min 5.5 9.0 13.0 16.0 18.0 23.0 27.0 5,2 5,2 5,2 5,2 5,2 5,2 5,2 115 120 100 110 110 110 110 SRF DCR min4 max5 Irms6 Wt (GHz) (mOhm) (A) (mg) 5.0 4.0 3.0 3.0 2.9 2.6 2.3 2.6 3.4 3.9 5.2 6.0 6.8 7.9 4.0 4.0 4.0 4.0 4.0 4.0 4.0 52 65 78 110 118 133 147 1. Specify tolerance, termination and packaging codes: 2508-27NJLC 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 (1000 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 C instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts per full reel). 2. L and Q measured at 250 MHz, 0.1 Vrms, 0 A using an Agilent/HP 4291A impedance analyzer with an Agilent/HP 16193A test fixture. 3. Tolerances in bold are stocked for immediate shipment. 4. SRF measured using an Agilent/HP 8753 network analyzer and a Coilcraft SMD-D test fixture. 5. DCR measured using a 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. Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 Document 404-1 Revised 12/05/08 Document 404-2 Low Profile Mini Spring™ Inductors Typical L vs Frequency Typical Q vs Frequency 50 300 13.0 nH 16.0 nH 275 45 27.0 nH 250 40 18.0 nH 23.0 nH 27.0 nH 23.0 nH 200 30 25 18.0 nH 20 16.0 nH 15 13.0 nH Q factor Inductance (nH) 225 35 175 150 125 100 75 10 50 5 25 0 0 1 10 100 1000 10000 1 10 100 Frequency (MHz) 1000 10000 Frequency (MHz) 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) A D E Recommended Land Patterns C B 1508 F Size 1508 A max 0.155 3,94 B max 0.165 4,19 C max 0.079 2,01 D 0.135 3,43 E 0.115 ±0.015 2,92 ±0,38 F max 0.029 0,74 2508 0.270 6,86 0.165 4,19 0.079 2,01 0.135 3,43 0.230 ±0.015 5,84 ±0,38 0.029 0,74 Strip Length 2508 0.050 1,27 0.050 1,27 0.180 4,57 0.115 2,92 0.180 4,57 0.230 5,84 180° max Dimensions are in 45° min Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2009 inches mm Document 404-2 Revised 12/05/08