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| HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Transformers * Designed to operate at the rate of 1.544 Mbits/s as a line interface pulse transfomer Only difference between the 2745C and 2745C2 is the terminal length * * * * 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 TM00116 * ELECTRICAL SPECIFICATIONS AT 25 C Nominal Turns Ratio 2% (3-1):(4-6) 2745C 2745C2 1 : 1.37 CT 1 : 1.37 CT Inductance1 H Min (3-1) 680 680 (3-1) 1.0 1.0 DCR max (4-6) 1.4 1.4 Leakage Inductance H max (3-1) 1.2 1.2 Interwinding Capacitance pF max (3-1) to (4-6) 85 85 Minimum Interwinding Breakdown Voltage Vrms 850 850 Part Number 1. measured at 10 kHz, 0.1 Vac SCHEMATIC 2745C 2745C2 3 4 5 CT 1 6 1 : 1.37 CT (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 T1-37 HIGH FREQUENCY MAGNETICS TM00116 T1/E1 Through Hole Transformers MECHANICAL 2745C 2745C2 0.56 (14.22) MAX 0.56 (14.22) MAX 0.46 (11.68) MAX 0.46 (11.68) MAX TERMINAL 1 IDENTIFIER 0.35 (8.89) MAX 0.35 (8.89) MAX TERMINAL 1 IDENTIFIER 0.155 (3.94) 0.150 (3.81) 1 0.250 (6.35) 6 5 4 2 3 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 0.110 (2.79) 0.010 (0.25) 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 0.150 (3.81) 1 2 3 0.250 (6.35) 6 5 4 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 T1-38 |
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