bel fuse inc. 198 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com ?2000 bel fuse inc. specifications subject to change without notice. 09.00 tm00136 t1-81 electrical specifications at 25 c schematic 2779B ? operates at the t1 rate of 1.544 mbits/s and at the e1 rate of 2.048 mbits/s ? designed for transmit and receive line interface applications ? can replace 2771c with no pwb changes ? low-capacitance design for emi suppression ? 1500-volt isolation high frequecy magnetics t1/e1 surface mount transformer ? operating temperature range: -40 c to +85 c ? meets iec 695, 2-2 flammability requirements ? pwb process capability: standard printed wiring board assembly techniques, total-immersion cleaning ? reliability testing: shock, vibration, temperature cycling, temperature - humidity - bias 4 2 ct 3 1 1 ct : 2 ct 8 6 ct 5 7 r e b m u n t r a p s n r u t l a n i m o n o i t a r % 2 e c n a t c u d n i 2 n i m h m r c d w w w w w x a m e g a k a e l e c n a t c u d n i 3 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 1 p y t f p m u m i n i m g n i d n i w r e t n i n w o d k a e r b e g a t l o v 1 s m r v ) 8 - 5 ( : ) 1 - 4 ( 1 ) 1 - 4 ( 1 ) 1 - 4 ( 1 ) 8 - 5 ( 1 ) 1 - 4 ( 1 b 9 7 7 2t c 2 : t c 10 . 36 . 11 . 30 . 30 20 0 5 1 7 o t 6 & 3 o t 2 t c e n n o c . 1 c a v 1 . 0 , z h k 0 1 t a d e r u s a e m . 2 z h k 0 0 1 t a d e r u s a e m . 3
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 ?2000 bel fuse inc. specifications subject to change without notice. 09.00 tm00136 t1-82 mechanical 2779B high frequecy magnetics t1/e1 surface mount transformers 7 8 65 1 2 3 4 terminal 1 identifier 0.350 (8.89) max 0.004 0.100 0.490 (12.45) max 0.430 (10.92) max 8 edges 0.500 (12.7) max 0.256 (6.50) 0.160 (4.06) 0.050 (1.27) 0.100 (2.54) 1 2 3 4 7 8 65 1 2 3 4 unless otherwise specified, dimensions are nominal and in inches (millimeters).
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