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| HIGH FREQUENCY MAGNETICS T1/E1 Surface Mount Transformers * Operate at the T1 rate of 1.544 Mb/s and the E1 rate of 2.048 Mb/s Split windings provide maximum application flexibilty Minimum interwinding breakdown voltage of 1500 Vrms * * * * 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 TM00133 * * ELECTRICAL SPECIFICATIONS AT 25 C DCR Primary Inductance1 mH min Leakage Inductance2 H max Pri 2 3 0.8 1.104 Turns Ratio 2% Part Number Pri : Sec3 2771B 2771C 1 : 1.14 CT 1 CT : 2 CT4 max Sec3 0.8 2.25 Interwinding Capacitance pF max 1.75 3.154 80 30 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. connect 6 to 7 4. connect 2 to 3 SCHEMATICS 2771B 2771C 4 5 4 2 CT 5 7 6 8 1 CT : 2 CT 7 6 3 1 1 1 : 1.14 CT 8 (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 T1-75 HIGH FREQUENCY MAGNETICS TM00133 T1/E1 Surface Mount Transformers MECHANICAL 2771B 2771C 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 T1-76 |
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