? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. flyback transformer document 736 document 736 revised 01/16/09 1. inductance is measured at 100 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 both windings of the primary with the secondary windings shorted. inductance i nductance leakage volt-time part at 0 a 1 at i pk 2 dcr max (ohms) 3 inductance 4 turns ratio 5 i pk 2 product number 10% (h) min (h) pri sec 1 sec 2 sec 3 max (h) pri : sec 1 : sec 2 : sec 3 (a) typ (v sec) HA3994-AL 7.50 6.75 0.018 0.020 0.031 0.031 0.22 1 : 0.5 : 1.5 : 1.5 5.0 37.5 core material ferrite terminations rohs tin-silver over tin over nickel over phos bronze. other terminations available at additional cost. weight 25.0 g ambient temperature ?40c to +85c storage temperature component: ?40c to +85c. 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 24 per tray pcb washing only pure water or alcohol recommended ? flyback transformer for the linear technology lt3751 capacitor charger controller ? 5 ? 24 v input; 5 v, 3.6 a and 15 v, 1.2a outputs ? 1500 vrms isolation from primary to secondary windings primary windings to be connected in parallel on pc board. for linear technology lt3751 capacitor charger controller dimensions are in inches mm 5. turns ratios are with the primary windings connected in parallel. 6. electrical specifications at 25c. refer to doc 362 ?soldering surface mount components? before soldering. 8 2 12 5 4 1 11 pri 5 ? 24 v sec 1 5 v, 3.6 a sec 2 15 v, 1.2 a sec 3 ?15 v, 1.2 a 6 7 9 0.551 14,0 1.35 34,29 max 0.004 / 0,10 max recommended land pattern 1.053 26,75 1.024 26,0 0.148 3,75 0.148 3,75 0.079 2,00 0.039 1,00 max 12 1 1 1.10 28,2 0.108 2,75 12 ha3994- al ccixxxx dot indicates pin 1
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