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| Document 722 Flyback Transformers For Linear Technology LT3751 Capacitor Charger Controller * Flyback transformer for the Linear Technology LT3751 Capacitor Charger Controller * For charging capacitors to 500 V * GA3459-BL: 5 - 24 V input GA3460-BL: 12 - 24 V input * 1500 Vrms isolation from primary to secondary windings Core material Ferrite Terminations RoHS tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 24.2 - 27.5 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 24 per tray PCB washing Only pure water or alcohol recommended Part number GA3459-BL GA3460-BL 1. 2. 3. 4. Inductance at 0 A1 10% (H) 5.0 2.5 Inductance at Ipk2 min (H) 4.25 2.25 DCR max (mOhms)3 pri sec 7.70 515 5.63 400 Leakage inductance4 max (H) 0.10 0.06 Turns ratio5 pri : sec 1 : 10 1 : 10 Ipk2 (A) 20 50 Inductance is measured at 50 kHz, 0.1 Vrms. Peak primary current drawn at minimum input voltage. DCR for the primary is with the windings connected in parallel. Leakage inductance is for one winding of the primary with the secondary winding shorted. Dot indicates pin 1 1 12 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. 0.108 2,75 1 1.10 28,2 12 GA3459-BL 1 2 3 4 0.039 1,00 GA34xx-BL CCIXXXX 6 1.053 max 0.157 26,75 4,00 0.079 2,00 Recommended Land Pattern Pri 9 10 11 12 Sec 7 0.157 4,00 1.024 26,0 GA3460-BL 1 2 3 4 6 0.551max 14,0 Pri 12 11 10 9 Sec 7 1.173 29,80 1.285 max 32,65 0.004 / 0,10 Dimensions are in inches mm Primary windings to be connected in parallel on PC board. Specifications subject to change without notice. Please check our website for latest information. Document 722 Revised 05/21/09 (c) Coilcraft, Inc. 2009 |
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