for other values & custom designs, contact factory. specifications subject to change without notice. 15801 chemical lane, huntington beach, ca 92649-1595 tel: (714) 898-0960 ? fax: (714) 896-0971 rhombus industries inc. 19 dds - 2/98 pin position grid 0.100 (2.54) holes for bobbin pins holes for clips t-997 & t-998: ep13 package bottom view 1 5 6 10 T-710: rs-1408 package physical dimensions inches (mm) designed to meet the requirements of bellcore tr-nwt-000499, synchronous digital data interface-64 kbps and subrates compatible with level one transceiver ics low profile "touch tone" designs surface mount designs parameter T-710 t-997 * t-998 * units turns ratio 1:1 + 1% 1:1 + 1% 1:1 + 1% pri. impedance 100 w on sec. 135 135 143 w longitudinal balance 200 - 1000 hz 60 min. 40 typ. 40 typ. db 15 khz 40 min. 35 typ. 35 typ. db pri. dc resistance 19.5 max. 18.2 typ. 2.9 typ. w sec. dc resistance 19.5 max. 18.2 typ. 5.9 typ. w frequency response 100hz - 112khz 1.0 typ. 1.0 typ. --- db frequency response 1 khz - 200khz --- --- 1.0 max. db insertion loss 10khz 1.25 max. 1.25 typ. 0.50 typ. db isolation (hi-pot) 1500 1875 1875 v rms primary dc 0 0 0 ma inductance 1 khz & 1v rms 200 min. 200 min. 40 min. mh leakage inductance 10 khz & 0.5v rms 43 max. 60 max. 40 max. m h interwinding capacitance 10 khz & 1v rms 65 max. 65 max. 65 max. pf return loss 100hz to 100khz 15 min. 15 typ. --- db return loss 1 khz - 200khz --- --- 15 typ. db package type rs14x8 ep13 * ep13 * electrical specifications at 25 o c dds applications pulse transformers 6 5 4 3 1 T-710 schematic 1 3 5 10 8 6 t-997 & t-998 schematic pri. sec. pri. sec. T-710 & t-997 recommended for use with level one lxt400 & lxt456 t-998 recommended for use with level one lxt441 * surface mount version available for t-997 & t-998. add suffix "g" (i.e. t-997g or t-998g) see ep13-smd drawing page 21 (t-976g) for complete details including pdf catalogs & data sheets on this and other product families visit www.rhombus-ind.com
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