push-pull transformers document 1227-1 document 1227-1 revised 03/17/15 for linear lt3999 push-pull dc/dc driver primary leakage part input inductance (h) 2 inductance 3 dcr max (ohms) 4 turns ratio 5 number 1 voltage (v) min max max (h) pri sec pri : sec output pa6381-al_ 5.0 139 232 0.52 0.166 (a); 0.201 (b) 1.78 1 : 3.46 12 v, 0.83 a pa6383-al_ 5.0 29.7 49.5 0.19 0.035 (a); 0.045 (b) 0.067 1 : 1.5 5 v, 1.0 a pa6384-al_ 12 82.5 137.5 0.336 0.048 (a); 0.061 (b) 0.072 1 : 1.4 12 v, 0.83 a 1. when ordering, specify a packaging code: pa6384-al d 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 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. turns ratio is with the primary windings and secondary windings connected in series. 6. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. ? 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 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 C 2.1 g; pa6384-al: 3.8 C 4.0 g ambient temperature C40c to +85c maximum part temperature +125c (ambient + temp rise) storage temperature component: C40c to +125c. tape and reel packaging: C40c to +80c resistance to soldering heat max three 40 second refows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited foor 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 packaging see dimensional drawings pcb washing tested to mil-std-202 method 215 plus an additional aqueous wash. see doc787_pcb_washing.pdf . us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2016 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
document 1227-2 document 1227-2 revised 03/17/15 dimensions are in inches mm 0.080 2,03 1 0.355 9,02 0.430 10,92 0.041 1,05 0.339 8,60 0.520 13,21 max 0.370 9,40 0.028 0,70 0.050 1,27 0.098 2,50 0.098 2,50 max max 1 8 4 5 recommended land p attern 0.004 /0,10 0.004 /0,10 dot abo ve pin1 0.080 2,03 1 0.433 11,00 0.500 12,7 0.041 1,05 0.413 10,50 0.600 15,24 max 0.460 11,68 0.024 0,60 0.050 1,27 0.098 2,50 0.098 2,50 max max 1 8 4 5 recommended land p attern dot abo ve pin1 p a6381-al, p a6383-al p a6384-al 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 push-pull transformers for linear lt3999 us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2016 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
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