corporate office bel fuse inc. 198 van vorst street, jersey city, nj 07302-4496 tel: 201-432-0463 fax: 201-432-9542 e-mail: belfuse@belfuse.com internet: http://www.belfuse.com far east office bel fuse ltd. 8f/8 luk hop street san po kong kowloon, hong kong tel: 852-2328-5515 fax: 852-2352-3706 european office bel fuse europe ltd. preston technology management centre marsh lane, preston pr1 8ud lancashire, u.k. tel: 44-1772-556601 fax: 44-1772-888366 defining a degree of excellence surface mount t1 carrier interface transformers t1/cept telecom line interface applications 9 10 11 12 14 13 15 16 primary secondary 12 456 7 secondary primary 8 primary secondary 16 15 14 13 12 11 10 9 primary secondary 1234567 16 15 14 13 12 11 10 9 123456 a b c primary 12 45 8 16 15 14 13 12 11 10 9 secondary primary d package style smt 8 7 secondary 7 83 6 3 mechanicals electricals s553-0013-00 s553-0013-01 s553-0013-02 s553-0013-03 s553-0013-06 S553-0013-07 part number turns ratio t1/t2 1:1.385ct/1:1:1 1ct:2ct/1:1 1:2ct/1:1.36 1:2ct/1:2ct 1:1.15ct/1:2ct 1:1:1.266/1:2ct leakage inductance l l ( m h) max 0.80/0.50 0.80/0.50 0.80/0.80 0.80/0.80 0.50/0.80 0.80/0.80 dcr (ohms) max schematic 0.80 1.80/0.80 1.80/0.80 0.80/1.80 0.80/1.80 0.80/1.80 a b c d d d @ 25 o c schematics secondary primary bel offers a new cost effective package on our standard t1/cept telecom interface line transformers. this sixteen lead, surface mount package, provides a superior, cost effective, quality product. the bel surface mount topper tm package offers an industry standard package size and pin-out at an aggressive price. dimensions are in inches(mm). dimension tolerance is +/- 0.02(0.51) unless otherwise specified. 0.215(5.46) max 0.015(0.38) 0.004(0.10) 0.350(8.89) +/- 0.005(0.13) 0.012(0.31) 0.008(0.20) 4 o nom 0.025(0.64) 0.015(0.38) 0.350(8.89) 0.375(9.53) 0.285(7.24) max bel date code part number 0.018(0.45) +/- 0.002(0.05) top view 0.485(12.32) max 0.05(1.27)typ. tm0007 t107
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