magnetic component specification specification number SGE2648-1 rev. b (073001) linfinity microelectronics, inc., 11861 western ave., garden grove, ca 92841 tel. (714) 898-8121 this document describes and specifies the electrical and mechanical characteristics of SGE2648-1 high voltage transformer for ccfl inverter power supply. this component should be designed and manufactured in accordance with engineering specification les3811t 1. electrical characteristics inductance ( at 10khz, 0.1v) d.c resistance items min nom max items min nom max l1-2, l2-3 (uh) 243 282 329 r1-2, r2-3(m ? ) 420 440 460 l4-5 (mh) 890 1012 1210 rdc4-5( ? ) 405 415 430 inductance ( at 100khz, 1vrms) r1-2/r2-3 0.96 1 1.04 l lkg2-4 ,l lkg4-6 (uh) 24.5 26.5 28.5 should be shorted pin 4-5 balance of primary dc resistance will be used as bifilar winding measure tool secondary self capacitance c4-5 (pf) 2.0 2.5 3.0 hp4280a 1mhz c meter, floating mode dielectric voltage withstand secondary to core 2500vrms min. ( 1min. 60hz) primary to core 1000vrms min. primary to secondary 60 hz.,arc-detect enabled, 5 sec. min., 200ua max. leakage current 1000vrms min. operating test v4-5 primary driven with 60 khz. sine wave source (pin 1-3), secondary measured with tektronix p6015 (or equiv.).. 2000vrms min. 2. winding specifications primary secondary pin 1 ? 2 pin 2-3 pin 4-5 winding sequence 2s-1f 3s-2f 5s-4f wire size & type #34, single insulation, 180 c #34, single insulation, 180 c #46, triple insulation, 180 c number of turns 28 28 1700 winding method bifilar 3. physical specification & wiring diagram
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