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| HIGH FREQUENCY MAGNECTICS T1/E1 Through Hole Transformers * Operates as a line-interface pulse transformer in DS1 and CEPT applications Designed for automatic machine placement into printed wiring boards Only difference between the 2745G and 2745G3 is the terminal length * * * * 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 TM00117 * * ELECTRICAL SPECIFICATIONS AT 25 C DCR Leakage Inductance 2 H max Interwinding Capacitance pF typ Minimum Interwinding Breakdown Voltage Vrms (3-1) and (4-6) 1000 1000 Turns Ratio 2% Part Number Inductance mH min 1 max (3-1) : (4-6) 2745G 2745G3 1 : 1.14CT 1 : 1.14CT (3-1) 1.75 1.75 (3-1) 0.95 0.95 (4-6) 1.1 1.1 (3-1) 1.3 1.3 (3-1) and (4-6) 80 80 1. measured at 10 kHz, 0.1 V 2. measured at 100 kHz, with (4-6) shorted Typical Frequency and Time Response Part Number Terminating Impedances 2745G 2745G3 10 : 100 10 : 100 Bandwidth (3 dB) 1 kHz - 25 MHz 1 kHz - 25 MHz Risetime Overshoot Droop (350 ns pulse) 0.1% 0.1% 14 ns 14 ns 0% 0% SCHEMATIC 2745G 2745G3 3 4 5 CT 1 1 : 1.14 CT (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 6 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com T1-39 HIGH FREQUENCY MAGNECTICS TM00117 T1/E1 Through Hole Transformers MECHANICAL 2745G 2745G3 0.56 (14.22) MAX 0.56 (14.22) MAX 0.46 (11.68) MAX 0.46 (11.68) MAX TERMINAL 1 IDENTIFIER TERMINAL 1 IDENTIFIER 0.35 (8.89) MAX 0.35 (8.89) MAX 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 T1-40 |
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