name: sheet: date: rhombus p/n: cust p/n: 15801 chemical lane, huntington beach, ca 92649 phone: (714) 898-0960 fax: (714) 896-0971 rhombus transformers & magnetic products industries inc. www.rhombus-ind.com 1 of 1 7/2/96 T-13220 u interface transformer (2b1q coding applications) designed for use with national tp 3410 schematic diagram parameter min. max. units primary inductance (line side) 25.4 28.6 mh pins 1 to 5 with 2 & 4 shorted. primary dc resistance 20 ohms secondary dc resistance 3.0 ohms isolation (hi-pot) 3000 v rms dc bias 60 ma return loss 10khz & 25 khz 20 db longitudinal balance (281 hz to 40 khz) 55 db turns ratio ( + 3 % ) (line : chip) 1.50 : 1 notch indicates pin #1 physical dimensions inches (mm) note: operating temp. range -40 0 c to +85 0 c primary is line side (pins 1,2,4,5) secondary is chip side (pins 7,8,9) surge voltage capability metallic voltage: 800 v peak, 10/560 m s longitudinal voltage: 2400 v peak, 10/700 m s sec device pri line a surface mount version of this part is available add suffix "g" to part number flammability: materials used in the production of these units meet requirements of ul94-vo and iec 695-2-2 needle flame test. reinforced insulation
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