flyback transformers document 722 document 722 revised 05/15/15 1. inductance is measured at 50 khz, 0.1 vrms. 2. peak primary current drawn at minimum input voltage. 3. dcr for the primary is with the windings connected in parallel. 4. leakage inductance is for the primary with windings connected in parallel and with the secondary winding shorted. inductance inductance leakage part at 0 a 1 at i pk 2 dcr max (mohms) 3 inductance 4 turns ratio 5 i pk 2 number 10% (h) min (h) pri sec max (h) pri : sec (a) ga3459-bl 5.0 4.25 7.70 515 0.10 1 : 10 20 ga3460-bl 2.5 2.25 5.63 400 0.06 1 : 10 50 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 24.2 C 27.5 g ambient temperature C40c to +125c storage temperature component: C40c to +125c. tray 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 24 per tray pcb washing tested with pure water or alcohol only. for other solvents, see doc787_pcb_washing.pdf. ? flyback transformer for the linear technology lt3751 capacitor charger controller for charging capacitors to 500 v ? ga3459-bl: 5 C 24 v input; ga3460-bl: 12 C 24 v input ? 1500 vrms, one minute isolation from primary to secondary windings ? flux shield minimizes emi emission primary windings to be connected in parallel on pc board. connect pin 6 to ground. note: the primary windings of these transformers do not have the same pinouts. for linear technology lt3751 capacitor charger controller 0.551 14,0 1.285 32,65 max 0.004 / 0,10 max 1.053 26,75 1.024 26,0 1 recommended land pa ttern 12 ga34xx-bl xxxx y max 12 1 1.10 28,2 0.108 2,75 0.157 4,00 0.157 4,00 0.039 1,00 dot indicates pin 1 inter nal code 0.079 2,00 12 9 1 1 pr i pr i sec sec flux shield flux shield 2 2 3 3 4 4 7 7 6 6 11 10 10 11 9 12 ga3459-bl ga3460-bl 5. turns ratios are with the primary windings connected in parallel. 6. electrical specifcations at 25c. refer to doc 362 soldering surface mount components before soldering. dimensions are in inches mm
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