? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. flyback transformers document 439 document 439 revised 10/28/08 l at 0 a 2 lat i pk 3 leakage l 5 part 10% min dcr max (ohms) max (h) turns ratio i pk 3 drive number 1 (h) (h) pri sec 4 drive bias pri drive pri:sec 6 pri :drive pri :bias (a) output 7 output C1173-AL_ 166.5 150.0 0.770 0.020 0.523 1.12 2.50 0.400 6.5 : 1 3.7 : 1 2.0 : 1 1.2 3.3 v, 3 a 5.6 v, 10 ma c1174-al_ 150.0 135.0 0.515 0.023 0.570 0.88 2.00 0.400 5.0 : 1 3.2 : 1 2.25 : 1 1.2 5.0 v, 2 a 7.5 v, 10 ma 9 11 3 5 primary 2 1 bias secondary drive 8 7 12 10 for t exas instruments tps23750 poe powered device controller 0.135 3,43 0.07 1,79 0.335 8,51 0.079 2,01 0.865 21,97 0.590 14,98 0.677 17,20 0.693 17,60 0.665 16,88 0.028 0,72 0.098 2,5 0.098 2,5 max dot indicates pin 1 max max 1 12 yyxxxx-al 6 7 112 recommended land pattern 0.004 /0,10 1. when ordering, please specify packaging code: c1174-al d packaging: d =13 machine ready reel. eia-481 embossed plastic tape (200 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. 3. peak primary current drawn at minimum input voltage. 4. dcr for secondary is with windings connected in parallel. 5. leakage inductance for the primary is with the secondary and drive windings shorted; leakage inductance for the drive winding is with the secondary windings shorted. 6. turns ratio is with both secondary windings connected in parallel. 7. output of the secondary is with the windings connected in parallel. bias winding output is 10 v, 20 ma. 8. electrical specifications at 25c. refer to doc 362 ?soldering surface mount components? before soldering. the secondary windings are to be connected in parallel on the pc board. core material ferrite terminations rohs tin-silver over tin over nickel over phos bronze. other terminations available at additional cost. weight 5.0 ? 5.3 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 ? isolated synchronous flyback transformers developed for texas instruments pmp929 reference design. ? operates up to 500 khz with 18 ? 72 v input ? 1500 vrms isolation primary and bias to secondary windings dimensions are in inches mm
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