rhombus transformers & magnetic products industries inc. name: sheet: date: rhombus p/n: cust p/n: 15801 chemical lane, huntington beach, ca 92649-1595 phone: (714) 898-0960 fax: (714) 896-0971 www.rhombus-ind.com 1 of 1 T-1477G 12/18/01 100base-t interface transformer reinforced insulation per en 41003/en 60950 turns ratio ( + 5% ) 1ct:1ct parameter min. max. units open circuit inductance 350 m h (8 ma dc bias) leakage inductance 0.9 m h interwinding capacitance (c w/w ) 10 pf primary dc resistance 0.9 ohms secondary dc resistance 1.0 ohms insertion loss (0.1 - 100 mhz) -1.0 db return loss 1 - 30 mhz -22 db 40 mhz -20 db 50 mhz -18 db 60 - 80 mhz -12 db isolation (hi-pot) 4000 v rms schematic diagram meets iee 802.3 and ansi x3.263 standards. transformer can be used for transmit or receive side. flammability: materials used in the production of these units meet requirements of ul94-vo and iec 695-2-2 needle flame test. parts shipped in anti-static tubes. 31 pieces per tube operating temperature range: -40 0 c to +85 0 c physical dimensions inches (mm) .740 ( 18.80 ) .710 ( 18.03 ) max. .560 ( 14.22 ) .110 ( 2.79 ) typ. .010 ( 0.25 ) typ. .020 ( 0.51 ) typ. .100 ( 2.54 ) typ. .400 ( 10.16 ) max. .360 ( 9.14 ) max. .560 ( 14.22 ) preliminary!
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