Document 690-1 Power Inductor – GA3382-BL For NSC LM25037 PWM Controller • Designed for National Semiconductor LM25037 Dual Mode PWM Controller. Shown as L3 on Application Note AN-1861. • 500 Vrms primary to bias and primary to core isolation • Bias winding provides 10 Vdc to the circuit Core material Ferrite Terminations RoHS compliant tin-silver over copper. Other terminations available at additional cost. Weight 9.5 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 +125°C. Packaging: –55°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 175/13″ reel Plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.5 mm pocket depth PCB washing Only pure water or alcohol recommended Part number1 GA3382-BL_ Inductance2 ±10% (µH) 4.0 DCR max (Ohm)3 pri bias 0.0095 0.36 SRF typ (MHz) 30 Isat (A)4 10% drop 20% drop 30% drop 16.0 17.0 1. When ordering, please specify termination and packaging codes: GA3382-BLD 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. 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 measured at 250 kHz, 0.4 Vrms. 3. DCR for the primary is with the windings connected on parallel. 4. DC current at which inductance drops the specified amount from its value without current. 5. Current that causes the specified temperature rise from 25°C ambient. 6. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. Irms (A)5 20°C rise 40°C rise 18.0 6.5 8.5 1 2 3 4 7 8 9 10 5 Bias 6 Primary windings to be connected in parallel on the PC board Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2008 Document 690-1 Revised 09/05/08 Document 690-2 Power Inductor – GA3382-BL Inductance vs Current Inductance vs Frequency 100 Inductance (µH) Inductance (µH) 100 10 1 0.1 10 0 0.1 0.1 10 1 100 0.1 100 Frequency (MHz) 1 120 110 0.910 max 23,11 100 90 5 80 10 GA3382-AL CCI xxxx Irms Derating 6 70 60 0.395 max 20,03 50 40 25°C Percent of rated Irms 10 1 Current (A) 30 0.004 / 0,10 0.791 20,10 1.020 max 25,90 20 10 0 -40 -20 0 20 40 60 80 Ambient temperature (°C) 100 120 140 6 0.148 3,76 5 0.039 1,00 1 10 1.040 26,42 0.148 3,76 Recommended Land Pattern 0.060 1,52 1 inches Dimensions are in mm Specifications subject to change without notice. Please check our website for latest information. © Coilcraft, Inc. 2008 0.090 2,29 Document 690-2 Revised 09/05/08