flyback transformers document 608 document 608 revised 03/14/12 for silicon laboratories si3402 pd controllers inductance inductance leakage part power at 0 a 2 at i pk 3 dcr max (ohms) 4 inductance 5 turns ratio 6 i pk 3 number 1 (w) 10% (h) min (h) pri sec max (h) pri : sec (a) output 7 fa2924-al_ 15 40.0 36.0 0.100 0.025 0.666 1 : 0.3 2.0 3.3 v, 4.5 a fa2805-cl_ 15 40.0 36.0 0.108 0.040 0.621 1 : 0.4 2.0 5.0 v, 3.0 a fa2925-al_ 15 40.0 36.0 0.100 0.155 0.566 1 : 1 2.0 12.0 v, 1.25 a 1. when ordering, please specify packaging code: fa2925-al d packaging: d = 13 machine-ready reel. eia-481 embossed plastic tape (175 parts 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 is for the primary, measured at 200 khz, 0.2 vrms, 0 adc. 3. i pk is peak primary current drawn at minimum input voltage. 4. dcr for the secondary is per winding. 5. leakage inductance measured between pins 1 and 2 with all secondary pins shorted. 6. turns ratio is with the secondary windings connected in parallel. 7. output is with the secondary windings connected in parallel. 8. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. 0.500 12,70 0.530 13,46 0.039 1,00 0.512 13,00 0.699 17,75 max 0.028 0,70 0.098 2,50 max max 5 6 1 10 0.004 /0,10 dot abo ve pin1 0.080 2,03 1 0.590 14,99 0.050 1,27 0.098 2,50 recommended land p attern secondary windings to be con - nected in parallel on pc board 7 8 9 10 pr i sec 1 2 core material ferrite terminations rohs tin-silver over tin over nickel over phos bronze. other terminations available at additional cost. weight 6.57 C 6.71 g ambient temperature C40c to +85c storage temperature component: C40c to +85c. 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 175 per 13 reel plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth pcb washing tested with pure water or alcohol only. for other solvents, see doc787_pcb_washing.pdf ? designed for power over ethernet pd controllers for applica - tions up to 15 watts. ? operates in continuous conduction mode with 36 C 57 v input ? 1500 vrms, one minute isolation between primary and secondary dimensions are in inches mm 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. 2013 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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