? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. flyback transformer document 457 document 457 revised 10/28/08 1. when ordering, please specify packaging code: C1154-BL d packaging: d =13 machine ready reel. eia-481 embossed plastic tape (200 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. inductance inductance leakage part at 0 a 2 at i pk 3 dcr max (ohms) inductance 4 turns ratio i pk 3 number 1 10% (h) min (h) n 1 n 2 n 3 n 4 n 5 max (h) n 1 :n 2 :n 3 :n 4 :n 5 (a) C1154-BL_ 255.0 229.5 0.335 0.020 0.017 0.200 0.745 5.0 1 : 0.1 : 0.075 : 0.125 : 0.425 0.25 for maxim max5941a poe interface/pwm controller 1 12 n primary 1 8 7 9 5 6 4 n secondary 3.3 v 2 n secondary 2.5 v 3 n drive 5v 4 11 2 n bias 5 0.865 21,97 0.590 14,98 0.677 17,20 0.028 0,72 max dot indicates pin 1 c1154-b max 1 12 6 7 0.135 3,43 0.07 1,79 112 0.665 16,88 0.098 2,5 0.098 2,5 recommended land pattern 0.335 8,51 0.079 2,01 0.693 17,60 max 0.004 /0,10 2. inductance is for the primary, measured at 275 khz, 1.0 vrms. 3. peak primary current drawn at minimum input voltage. 4. leakage inductance is for the primary winding with the secondary windings shorted. 5. electrical specifications at 25c. refer to doc 362 ?soldering surface mount components? before soldering. core material ferrite terminations rohs tin-silver over tin over nickel over phos bronze. other terminations available at additional cost. weight 4.9 g ambient temperature ?40c to +125c storage temperature component: ?40c to +125c. packaging: ?40c to +80c resistance to soldering heat max three 40 second reflows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited floor 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 200 per 13 reel plastic tape: 44 mm wide, 0.35 mm thick, 28 mm pocket spacing, 9.6 mm pocket depth pcb washing only pure water or alcohol recommended ? dual-output continuous-current flyback transformer ? operates with 18 ? 72 volts input ? 1500 vrms isolation between the primary and the secondary
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