? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. forward converter transformer document 674 document 674 revised 10/28/08 1. when ordering, please specify a packaging code: GA3291-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. leakage input input output part inductance 2 dcr max (ohms) 3 inductance 4 voltage turns ratio 5 filter filter number 1 min (h) pri sec max (h) range (v) pri : sec output inductor inductor GA3291-AL_ 152 0.065 0.031 0.215 36 ? 57 1 : 0.923 12 v, 2.5 a do1608c-103 mss1278-683 for akros as1130 poe controller core material ferrite terminations rohs tin-silver over tin over nickel over phos bronze. other terminations available at additional cost. weight 10.7 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 175 per 13 reel plastic tape: 44 mm wide, 0.4 mm thick, 32 mm pocket spacing, 11.9 mm pocket depth pcb washing only pure water or alcohol recommended ? developed for akros silicon as1130, 30 w poe controller with integrated dc-dc conversion ? designed for forward topology operating at 350 khz ? 1500 vrms isolation from primary to secondary dimensions are in inches mm 1 2 3 7 8 pri sec primary is pin 1 to pin 3.terminal 2 is for internal connection only. do not connected terminal 2 to ground or any circuitry. 2. inductance is measured at 300 khz, 0.6 vrms, 0 adc. 3. dcr for the primary is measured from pin 1 to pin 3. 4. leakage inductance is for the primary (pin 1 to pin 3) and is measured with the secondary shorted. 5. turns ratio is based on the entire the primary winding (pin 1 to pin 3). 6. electrical specifications at 25c. refer to doc 362 ?soldering surface mount components? before soldering. 0.425 10,80 1.148 29,15 0.969 24,6 max 0.004 / 0,10 max recommended land pattern 0.810 20,57 0.827 21,0 0.118 3,00 0.118 3,00 0.069 1,75 0.028 0,70 max 12 1 1 6 7 0.930 23,62 0.130 3,3 dot indicates pin 1 12 ga3291- al ccixxxx
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