flyback transformer document 529 document 529 revised 12/22/11 1. when ordering, please specify packaging code: d1766-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. 0.930 23,62 0.130 3,30 0.050 1,27 0.118 3,0 1 0.450 11,43 1.181 30,00 0.827 21,0 0.810 20,57 0.969 24,6 0.084 2,13 0.028 0,72 0.118 3,0 max max max 1 1 12 12 6 6 7 7 recommended land p attern 0.004 /0,10 d1766-al xxxx y dot indicates pin 1 pa rt s manuf actured pr ior to december 2011 ma y be mar ke d diff erently . the d1766-al multiple-output transformer was developed for use with linear technology ltc4267 power over eth - ernet ieee 802.3af pd interface with integrated switching regulator. it is ideal for use in telecommunications isolated converters and isolated power supplies. this low-profle transformer is designed for an input volt - age of 36 C 72 volts. it features interleaved primary and secondary windings to minimize leakage inductance and 1500 vrms isolation between windings. coilcraft can also custom engineer a transformer to meet your specifc requirements. for free evaluation samples, contact coilcraft or visit www.coilcraft.com . for linear technology ltc4267 poe pd interface 2. inductance is for the primary, measured at 200 khz, 1.1 vrms, 0 adc. 3. peak primary current drawn at minimum input voltage. 4. leakage inductance is for the primary and is measured with secondary windings shorted. 5. all outputs are referenced to ground. 6. operating temperature range C40c to +125c. 7. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. inductance inductance leakage part at 0 adc 2 at i pk 3 dcr max inductance 4 turns ratio i pk 3 number 1 10% (h) min (h) (ohms) max (h) pri : s1 pri : s2,s3 (a) outputs 5 d1766-al_ 221 200 0.420 (pins 1 C 3) 5.1 9.6 : 1 24 : 1 1.5 3.3 v, 0.5 a (s3) 0.013 (pins 8 C 5) 2.5 v, 1.5 a (s2) 0.013 (pins 7 C 6) 1.8 v, 2.5 a (s1) 0.015 (pins 10 C 9) 0.030 (pins 12 C 11) 5,6 1 3 s3 pr i s2 s1 12 10 3.3 v 2.5 v 1.8 v gnd 11 9 8,7 the secondary windings are to be connected in series on the board by connecting pins 9, 8 and 7 together and pins 11 and 10 together. outputs at pins 12, 11,10 and 8,7 are referenced to ground (pins 5,6). dimensions are in inches mm 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 12.7 g ambient temperature C40c to +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) 38 per billion hours mean time between failures (mtbf) 26,315,789 hours, calculated per telcordia sr-332 packaging 175 per 13 reel plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 mm pocket depth pcb washing tested with pure water or alcohol only. for other solvents, 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. 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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