dimensions: inches mm unless otherwise specified, all tolerances are .010 0,25 rohs peak reflow temperature rating: 245c dual smt package contains both transmit and receive transformers operating temperature of -40c to +85c models matched to leading transceiver ics return loss meets requirements of g.703 1500 vrms isolation per ul1459 and ul195 0 mechanical schematics bh weight . . . . . . . . . . . . . . .1.0 grams tape & reel . . . . . . . . . . . . 600/reel tube . . . . . . . . . . . . . . . . . . .40/tube www.pulseeng.com 1 t655.d (8/09) electrical specifications @ 25c ? operating temperature - 40c to +85c rohs-6 compliant part number turns ratio (2%) ocl primary @ 25c (h min) l l (h max) c ww (pf max) isolation voltage (vrms min) package/ schematic primary pins tx rx tx rx tx rx tx rx tx rx t3020nl 1:2ct 1:1 40 100 .120 .120 10 10 1500 bh/1 16-14 6-8 t3023nl 1:1 1:1 40 40 .110 .110 10 10 1500 bh/2 1-2 7-8 usa 858 674 8100 ? germany 49 7032 7806 0 ? singapore 65 6287 8998 ? shanghai 86 21 32181071 ? china 86 755 33966678 ? taiwan 886 3 4643715 t3/ds3/e3/sts-1 transformers dual smt, extended temperature range 2
application notes 1. the transformers have been developed for use as transmit and receive transformers in t3 or ds3 links, using bit rates of 44.736mbps and b3zs coding on coaxial cable. the charac- teristics allow compliance with the pulse templates of ccitt g.703 as well as att t.a.34. the transformers are also suitable for the e3 interface at 34.368mbps with hdb3 coding or sts-1applications, at 51.84mbps according to bellcore ta-nwt-000253. 2. bandwidth specifications are typical in a 75 ? system. return loss meets the requirements of g.703. materials used in the products are ul94-v0 recognized. products meet the require- ments of iec 695-2-2 (needle flame test). 3. for those applications requiring a 1:1 turns ratio on the transmit side, use only one half of the secondary (2ct) winding. 4. optional tape & reel packaging can be ordered by adding a ? t ? suffix to the part number (i.e. t3023nl t ). 5. for other t3/ds3/e3/sts-1 transformers, please see data sheets t606, t619, t672, t663 and t668. 6. transformer selection guide - please contact pulse applications engineering or see the pulse web site data sheet menu to find the latest transformer selection guide. www.pulseeng.com 2 t655.d (8/09) for more information: pulse worldwide headquarters 12220 world trade dr. san diego, ca 92128 u.s.a. www.pulseeng.com tel: 858 674 8100 fax: 858 674 8262 pulse south asia 135 joo seng rd. #03-02 pm industrial bldg. singapore 368363 tel: 65 6287 8998 fax: 65 6280 0080 pulse north asia no. 26, kao ching rd. yang mei chen taoyuan hsien taiwan r. o. c. tel: 886 3 4643715 fax: 886 3 4641911 pulse china headquarters b402, shenzhen academy of aerospace technology bldg. 10th kejinan rd. high-tech zone nanshan district shenzen, pr china 518057 tel: 86 755 33966678 fax: 86 755 33966700 pulse north china room 1503 xinyin building no. 888 yishan rd. shanghai 200233 china tel: 86 21 54643211/2 fax: 86 21 54643210 pulse europe einsteinstrasse 1 d-71083 herrenberg germany tel: 49 7032 7806 0 fax: 49 7032 7806 135 performance warranty of products offered on this data sheet is limited to the parameters specified. data is subject to change w ithout notice. other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. ? copyright, 2009. pulse engineering, inc. all rights reserved. t3/ds3/e3/sts-1 transformers dual smt, extended temperature range
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