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| HIGH FREQUENCY MAGNETICS T1/E1 Dual-Output Surface Mount Transformer * Operates at T1 rate of 1.544 Mb/s and the E1 rate of 2.048 Mb/s Two center-tapped secondary windings provide two output signals from a single input Minimum interwinding breakdown voltage of 1500 Vrms * * * * Operating temperature range: -40C 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 TM00134 * * ELECTRICAL SPECIFICATIONS AT 25 C Turns Ratio 2% Part Number (4-5):(1-3) 2771F 1 : 2CT (4-5):(8-6) 1 : 2CT (4-5) 3.1 Inductance1 mH min Leakage Inductance2 H max (4-5) 5 (4-5) 1.8 DCR Interwinding Capacitance pF max (3-1) 3.2 (8-6) 4.0 (4-5) : (1-3) 20 (4-5) : (8-6) 25 1. measured at 10 kHz, 0.1 V 2. measured at 100 kHz SCHEMATIC 2771F 1 4 2 3 8 7 6 1 : 2 CT : 2 CT 5 (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com T1-77 HIGH FREQUENCY MAGNETICS TM00134 T1/E1 Dual-Output Surface Mount Transformer MECHANICAL 2771F 0.160 (11.68) 0.590 (14.99) MAX 87 65 0.120 (3.05) 0.495 0.430 (12.57)(10.92) MAX MAX 1234 TERMINAL 1 IDENTIFIER 0.395 (10.03) MAX 0.004 8 EDGES 0.23 (0.58) X 0.100 (2.54) FOOT (PHOSPHOR BRONZE, SOLDER COATED) 0.100 (2.54) TYP RECOMMENDED PCB PATTERN COMPONENT CENTER 0.255 (6.48) 0.120 (3.05) TYP 0.045 (1.14) TYP 0.008 (0.203) 2 PLACES Unless otherwise specified, dimensions are nominal and in inches (millimeters). (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 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 T1-78 |
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