Document 1254-1 Dual Inductor for Class D RA7231-AL AEC-Q200 Grade 1 qualified Dual inductors for use in Class D output filters A single shielded package contains both coils. Very low magnetic coupling Designed for 40 Watts into 2 Ohm load Less than 1% drop in inductance up to 12.3 A Core material Ferrite Terminations RoHS compliant tin-silver (96.5/3.5) over copper. Weight 12.3 g Ambient temperature 40C to +125C with Irms current Maximum part temperature +165C (Ambient + temperature rise) Storage temperature Component: 40C to +165C. Tape and reel packaging: 40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Tape and reel packaging 150/13 reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 16.1 mm pocket depth PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. 5 6 Isat (A) Irms (A) 2 3 4 Part Inductance DCR max SRF typ 1 number 10% (H) (mOhms) (MHz) 10% drop 20% drop 30% drop 20C rise 40C rise L1 5.0 6.0 34 15.5 16.6 17.6 RA7231-AL 7.6 10.6 L2 5.0 6.0 34 15.5 16.6 17.6 1. When ordering, please specify packaging code: RA7231-ALD 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 100 kHz, 1.0 Vrms, 0 Adc using an Agilent/HP 4284A impedance analyzer. Minimum inductance is 4.5 H at 11.5 Adc. 3. DCR is for each winding, measured on a micro-ohmmeter. 4. SRF measured using Agilent/HP 8753D network analyzer. 5. DC current (typical) at which the inductance drops the specified amount from its value without current. 6. Current applied to windings at the same time that causes the specified temperature rise from 25C ambient. 7. Electrical specifications at 25C. Refer to Doc 362 Soldering Surface Mount Components before soldering. Document 1254-1 Revised 04/05/16 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2016 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.RA7231-AL XXXXY Document 1254-2 Class D Dual Inductor RA7231-AL Dot indicates pin 1 L vs Current 14 10 0.551 max L1 L2 8 14,00 7 23 6 5 0.610 max 15,50 4 3 0.630 max 16,00 2 0.004/0,10 C L 1 0.224 0.047 0.094 0.1 1.0 10 100 5,7 1,2 2,4 0.122 Current (A) 3,1 2 3 C L 1 4 0.122 3,1 0.248 0.071 6,3 1,8 Recommended Land Pattern 0.303 0.126 7,7 3,2 0.134 0.102 3,4 2,6 4 1 C L 2 3 0.102 2,6 0.209 0.031 5,3 0,8 C L inches Dimensions are in mm US +1-847-639-6400 sales coilcraft.com Document 1254-2 Revised 04/05/16 UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2016 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information. Inductance (H)