Document 1227-1 For Linear LT3999 Push-Pull Transformers Push-Pull DC/DC Driver Developed for Linear LT3999 Low Noise, 1 A, 1 MHz Push-Pull DC/DC Driver with Duty Cycle Control 500 Vrms, one minute isolation primary windings to secondary windings Three output power versions: 1 W (12 V, 0.083 A), 5 W (5 V, 1 A), and 10 W (12 V, 0.83 A) Core material Ferrite Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze. Weight PA6381-AL, PA6383-AL: 1.9 2.1 g PA6384-AL: 3.8 4.0 g Ambient temperature 40C to +85C Maximum part temperature +125C (ambient + temp rise) Storage temperature Component: 40C to +125C. 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) 10.06 per billion hours / 9.940E+07 hours, calculated per Telcordia SR-332 Packaging See dimensional drawings PCB washing Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. See Doc787 PCB Washing.pdf. 4 Primary DCR max Leakage Volt-time Turns 2 inductance (H) 3 (Ohms) 5 6 Part Input inductance product ratio 1 number voltage (V) min max max (H) pri sec (V-sec) pri : sec Output PA6381-AL 5.0 139 232 0.520 0.166 (A) 1.78 26 1 : 3.46 12 V, 0.083 A 0.201 (B) PA6383-AL 5.0 29.7 49.5 0.190 0.035 (A) 0.067 12 1 : 1.5 5 V, 1.0 A 0.045 (B) PA6384-AL 12 82.5 137.5 0.336 0.048 (A) 0.072 22 1 : 1.4 12 V, 0.83 A 0.061 (B) 1. When ordering, specify a packaging code: PA6384-ALD Packaging: D = 13 machine ready reel. EIA-481 embossed plastic tape. Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ( 25 charge). 2. Inductance is for Pri A measured on an Agilent/HP 4284 at 100 kHz, 0.1 Vrms, 0 Adc. 3. Leakage inductance measured between pins 1 and 4 at 100 kHz, 0.1 Vrms, 0 Adc with pins 2 and 3 connected and with secondary pins shorted. 4. DCR for the scondary is for each winding. 5. Volt-time product is for Primary A, between pin 1 and 2. 6. Turns ratio is with the primary windings and secondary windings connected in series. 7. Electrical specifications at 25C. Refer to Doc 362 Soldering Surface Mount Components before soldering. Document 1227-1 Revised 04/30/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 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.Document 1227-2 Push-Pull Transformers for Linear LT3999 PA6381-AL,PA6383-AL Dot above pin1 0.355 max 9,02 0.004/0,10 0.041 1,05 0.520 max 13,21 0.339 0.050 0.028 8,60 1,27 0.080 0.370 0,70 2,03 9,40 5 4 1 0.430 max 10,92 0.098 0.098 2,50 2,50 1 8 Recommended LandPattern PA6384-AL Dot above pin1 0.433 max 11,00 0.004/0,10 0.041 1,05 0.600 max 15,24 0.050 0.413 0.024 1,27 10,50 0.080 0.460 0,60 2,03 11,68 5 4 1 0.500 max 12,7 1 8 Recommended 0.098 0.098 2,50 LandPattern 2,50 inches Dimensions are in mm Packaging PA6381-AL, PA6383-AL 350 per 13 reel Plastic tape: 32 mm wide, 0.42 mm thick, 20 mm pocket spacing, 9.16 mm pocket depth PA6384-AL 200 per 13 reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth Document 1227-2 Revised 04/30/21 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2021 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.