bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 fax 201-432-9542 www.belfuse.com 10base-t lan magnetics ?2005 bel fuse inc. specifications subject to change without notice. 03.05 lm05510 page 1 dual isolation transformer electrical specifications at 25 c schematic S553-5999-F2 transformer turns ratio rx 1ct : 1ct and tx 1ct : 2ct utilizes standard surface mount packaging meets all ieee 802.3 performance requirements low profile, surface mount packaging rated to 225 c peak ir reflow temperature operating temperature -40 to +85 c minimum interwinding breakdown voltage of 1500 vrms 1 2 3 6 7 8 9 10 11 14 15 16 1ct : 1ct 1ct : 2ct tx rx r e b m u n t r a p l c o n i m h e g a k a e l e c n a t c u d n i x a m h g n i d n i w r e t n i e c n a t i c a p a c x a m f p r c d ? ? ? ? ? x a m x r x t x r x t 6 1 - 1 1 1 - 6 n i x t o x t n i x r o x r 2 f - 9 9 9 5 - 3 5 5 s0 1 18 23 . 02 . 00 10 15 7 . 05 7 . 05 7 . 05 7 . 0 3 f - 9 9 9 5 - 3 5 5 s0 1 18 23 . 02 . 00 10 15 7 . 05 7 . 05 7 . 05 7 . 0 s553-5999-f3 1 2 3 6 7 8 9 10 11 14 15 16 1ct : 1ct 1ct : 2ct tx rx
corporate bel fuse inc. 206 van vorst street jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com far east bel fuse ltd. 8f / 8 luk hop street san po kong kowloon, hong kong tel 852-2328-5515 fax 852-2352-3706 www.belfuse.com europe bel fuse europe ltd. preston technology management centre marsh lane, suite g7, preston lancashire, pr1 8ud, u.k. tel 44-1772-556601 fax 44-1772-888366 www.belfuse.com 10base-t lan magnetics ?2005 bel fuse inc. specifications subject to change without notice. 03.05 lm05510 page 2 dual isolation transformer mechanical S553-5999-F2 s553-5999-f3 0.500 [12.70] max 0.375 [9.53] max 0.285 [7.24] max 0.018 ?.002 [0.46 ?.05] 0.225 [5.72] max 0.050 [1.27] 0.015 [0.38] 0.350 ?.010 [8.89 ?.25] 0.008 - 0.012 [0.20 - 0.30] 0.035 [0.89] 4? nom 0.025 [0.64] 0.070 [1.78] 0.050 [1.27] 0.425 [10.80] suggested pcb pad layout dimensions are in inches [millimeters]. standard dimension tolerance is ?.005 [0.13] unless otherwise noted. 0.004 [0.10]
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