Document 636 -1 Power Inductor – GA3252-AL For National Semiconductor LM3433 LED Driver • High current surface mount toroidal power inductor •Specified by National Semiconductor for 2 A to 14 A output applications Core material Ferrite Terminations RoHS compliant tin-silver (96.5/3.5) over copper. Other terminations available at additional cost. Weight 11.6 g Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current Storage temperature Component: –40°C to +85°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 Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Mean Time Between Failures (MTBF) 26,315,789 hours Packaging 200 per 13″ reel Plastic tape: 44 mm wide, 0.5 mm thick, 32 mm pocket spacing, 10.4 mm pocket depth PCB washing Only pure water or alcohol recommended 5 Irms (A)6 Inductance2 DCR max3 SRF typ4Isat (A) Part number1 ±20% (µH) (Ohms) (MHz) 10% drop 20% drop 30% drop 20°C rise 40°C rise GA3252-AL_ 12.0 0.017 206.5 8.0 136.5 10 1. When ordering, specify termination and packaging codes: GA3252-ALD 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). Packaging:D =13″ machine-ready reel EIA-481 embossed plastic tape (200 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 100 kHz, 0.1 Vrms on Agilent/HP 4192A. 3. DCR measured on a Keithley 580 micro-ohmmeter or equivalent. 4. SRF measured on an Agilent/HP 8753ES network analyzer. 5. DC current at which the inductance drops the specified amount from its value without current. 6. Current that causes the specified temperature rise from 25°C ambient. 7. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. 0.079 2,00 GA3252-AL 0.940 max 23,88 0.700 17,78 XXXXY 0.820 20,83 0.940 max 23,88 Parts manufactured prior to December 2011 may be marked differently. Recommended Land Pattern 0.413 max 10,50 0.820 20,83 Dimensions are in 0.005 / 0,13 mm 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 636-1 Revised 12/16/11 © Coilcraft Inc. 2013 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 636-2 Power Inductor – GA3252-AL L vs Current L vs Frequency 100 100 Inductance (µH) 1000 Inductance (µH) 1000 10 1 0.1 10 1 100 10 1 0.1 Current (A) 1 10 100 Frequency (MHz) Irms Derating 120 110 90 80 70 60 50 40 25°C Percent of rated Irms 100 30 20 10 0 -40 -20 0 20 40 60 80 100 120 140 Ambient temperature (°C) 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 636-2 Revised 12/16/11 © Coilcraft Inc. 2013 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.