flyback transformer document 1001 document 1001 revised 10/13/15 for linear technology ltc3300-1 cell balancer inductance inductance leakage part at 0 a 2 at i pk 3 dcr max (ohms) 4 inductance turns ratio 6 i pk 3 i rms 7 number 1 15% (h) min (h) pri sec max (h) 5 pri : sec (a) (a) ma5421-al_ 3.4 2.8 0.009 0.011 0.15 1 : 1 10 3.3 1. when ordering, please specify packaging code: ma5421-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 100 khz, 0.1 vrms, 0 adc. 3. i pk is peak primary current drawn at minimum input voltage. 4. dcr is for the windings connected in parallel. 5. leakage inductance is for the primary windings connected in parallel and is measured with the secondary windings shorted. 6. turns ratio is with the primary windings and the secondary windings connected in parallel. 7. current that causes a 40c rise from 25c ambient, tested with continuous current fowing through all windings. this information is for reference only and does not represent absolute maximum ratings. 8. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. primary windings and secondary windings to be connected in parallel on the pc board ? flyback transformer developed for linear technology ltc3300 -1 bidirectional cell balancer ? 1500 vrms primary to secondary isolation; 500 vrms isolation between windings of the primary and the secondary core material ferrite terminations rohs tin-silver (96.5/3.5) over tin over nickel over phos bronze. other terminations available at additional cost. weight 6.0 g ambient temperature C40c to +85c with i rms current maximum part temperature +125c (ambient + temp rise) 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 dimensions are in inches mm 0.080 2,03 1 0.500 12,70 0.530 13,46 0.039 1,00 0.512 13,00 0.699 17,75 max 0.590 14,99 0.028 0,70 0.050 1,27 0.098 2,50 0.098 2,50 0.197 5,0 max max 5 6 1 10 recommended land p attern 0.004 /0,10 dot abo ve pin1 2 1 10 6 4 pr i sec 7 5 9
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