bel fuse inc. 198 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com modem magnetics ?2000 bel fuse inc. specifications subject to change without notice. 05.00 tm00408 t4-17 v.90 modem transformers 2802A 2802b schematic 1 3 6 4 primary secondary ? provide isolation and balance while minimizing signal distortion and insertion loss in high-speed modem applications ? qualified per bellcore tr-tsy-000357-1 ? approved by ul and csa ? 2802A transformer is designed to match a 600 w line to a 536 w load ? 2802b transformer is designed to match a 600 w line to a 301 w load ? minimum interwinding breakdown voltage of 1000 vrms electrical specifications at 25 c t r a p r e b m u n o i t a r s n r u t % 2 n o i t r e s n i s s o l b d s s o l n r u t e r b d y c n e u q e r f e s n o p s e r b d r c d w w w w w x a m c i n o m r a h n o i t r o t s i d b d l a n i d u t i g n o l e c n a l a b b d z h k 1 @ z h 0 0 5 3 - z h 0 0 3 z h k 5 - z h 0 0 2 i r p c e s z h 0 0 6 , m b d 0 z h 0 0 5 3 - z h 0 0 3 a 2 0 8 21 : 1< 0 8 . 0> 0 3< 1 . 08 48 4< 2 8 -> 0 6 b 2 0 8 21 : 1< 8 . 2> 0 2< 2 . 05 6 10 7 1< 0 9 -> 0 6
corporate bel fuse inc. 198 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 modem magnetics ?2000 bel fuse inc. specifications subject to change without notice. 05.00 tm00408 t4-18 v.90 modem transformers mechanical 0.470 [11.94] max 0.450 [11.43] 0.110 [2.79] 0.025 [0.63] square phosphor bronze solder-coated 0.650 [16.51] max 0.750 [19.05] 0.550 [13.97] 4 6 3 1 terminal 1 identifier note: unless otherwise specified, dimensions are nominal and in inches [millimeters]. 145 4.3 mh 150 6 4 20 pf 40 h 20 pf 3 1 150 k typical spice transmission model 2802b 2802A 2802b 1.1 mh 42 4 6 20 pf 12 h 20 pf 3 1 40 k 44 2802A
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