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| HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformers * Designed to operate at the DS1 rate of 1.544 Mbits/s as a line interface transformer Only difference between 2745F and 2745F2 is the terminal length Winding (3-1) can handle a 6 A surge current for 1 second Designed for remote powering with simplex-feed current * * * * 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 TM00128 * * * ELECTRICAL SPECIFICATIONS AT 25 C Part Number Nominal Turns Ratio 2% Inductance1 mH Min (3-1) DCR Leakage Inductance H max (4-6) Minimum Interwinding Breakdown Voltage Vrms (3-1) : (6-4) 2745F 2745F2 1CT : 2 1CT : 2 (3-1) 3.15 3.15 max 0.65 0.65 min 0.42 0.42 max 5.2 5.2 min 4.3 4.3 (3-1) 1.7 1.7 850 850 1. measured at 10 kHz, 0.1 Vac SCHEMATIC 2745F 2745F2 3 CT 2 1 1 CT : 2 6 4 (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 T1-63 HIGH FREQUENCY MAGNETICS TM00128 T1/E1 Through Hole Hardened Transformers MECHANICAL 2745F 2745F2 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 F23, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com T1-64 |
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