flyback transformer document 1320 for silicon labs isodriver isolated dc-dc converter leakage part input inductance 2 inductance 3 dcr max (ohms) turns ratio i sat 4 number 1 voltage (v) 5% (h) max (h) pri sec1 sec2 pri : sec1 : sec2 (a) ta7788-al_ 12 C 24 25.0 0.554 0.462 0.683 0.472 1 : 1.25 : 0.75 1.4 1. when ordering, specify a packaging code: ta7788-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 the primary, measured on an agilent/hp 4284 at 250 khz, 0.1 vrms, 0 adc. 3. leakage inductance measured between pins 2 and 3 at 250 khz, 0.1 vrms, 0 adc with all secondary pins shorted. 4. dc current that causes an inductance drop of 30% (typ) from its value without current 5. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. core material ferrite terminations rohs tin-silver-copper (95.5/3.8/0.7) over tin over nickel over phos bronze. weight 1.1 g ambient temperature C40c to +85c maximum part temperature +125c 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 700 per 13 reel plastic tape: 32 mm wide, 0.40 mm thick, 16 mm pocket spacing, 5.72 mm pocket depth pcb washing tested to mil-std-202 method 215 plus an additional aqueous wash. see doc787_pcb_washing.pdf . document 1320 revised 04/22/16 ? developed for use with silicon labs si828x isodriver isolated dc-dc-converter reference designs ? ultra-miniature fyback transformer, only 10.0 17.07 5.97 mm ? 5000 vrms, one minute isolation primary to secondary ? designed to meet reinforced insulation class with 8 mm creepage and clearance. 8 7 6 5 pr i sec1 (15 v, 0.13a) sec2 (9 v, 0.02 a) 3 2 dimensions are in inches mm 8 1 1 recommended land p attern 0.394 10,00 0.235 5,97 0.067 1,70 0.079 2,00 0.079 2,00 max max dot indicates pin 1 t a7788-al xxxx y inter nal code 0.028 0,70 0.672 17,07 max 0.555 14,1 8 0.063 1,60 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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