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1. configuration & dimensions : 3. electrical characteristics ( @ 25c ) : superworld electronics (s) pte ltd 2. schematic : ST4-120 (f) series power transformer pg. 1 note : specifications subject to change without notice. please check our website for latest information. 15.01.2008 gram 180 c 32.51 (1.280) b a 6.35 (.250) 8.89 (.350) 101.6-1016.0 x 34.93 optional mtg. screw & nut* unit : mm (inch) 33.35 h (1.313) l va 41.28 (1.625) w 33.35 (1.313) size 4 6 27.00 ml (1.063) pcb pattern a b a 21.59 (0.850) 32.01 (1.260) 7 8 6 5 1.041 (0.041) 4 3 2 1 l h a b a 7.11 (0.28) 6 c w ml 6 pin type st 115vac 60hz 5 7 8 4 1 clearance hole for optional mtg screw and nut pc terminal " " indicates polarity (4-40 x 1.375) k. core size j. temperature rise ei-41 x 17.00 m/m . less than 60 deg c . ac 2500v 60hz 1 minutes . dc 500v 100meg ohm of more . = - ohm . secondary = - ohm . i. withstand voltage (hi-pot) h. insulation resistance pin 7-8 parallel 60.00v . primary = 148 ohm . g. dc resistance pin 1-4 pin 5-6 series 120.00v . f. full load secondary voltage (5%) less than 85ma . e. full load primary current parallel 0.10a . series 0.05a . d. secondary load current parallel ac 124.00v . series ac 148.00v . c. secondary voltage (5%) less than 20ma . b. no load primary current ac 115 v 60 hz . a. primary voltage
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