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| HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Shielded Transformers * * Designed for DS1, DS1C, and CEPT applications Electrostatic shield provides improved longitudinal signal suppression and EMI reduction Maximum inductance unbalance of center-tapped windings is 0.1% * * * * * 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 TM00123 ELECTRICAL SPECIFICATIONS at 25 C Turns Ratio 2% DCR max Pri 4.5 4.5 3.15 3.15 0.92 0.92 0.92 0.92 4.5 4.5 6.5 6.5 1.1 1.1 2.5 2.5 3.7 3.7 1.9 1.9 0.75 0.75 0.83 0.83 Sec 7.2 7.2 4.4 4.4 1.05 1.05 1.43 1.43 10 10 54 54 10 10 54 54 Minimum Interwinding Breakdown Voltage Vrms 1000 1000 850 850 1000 1000 850 850 Part Number1 Primary Inductance2 mH min Leakage Inductance H max Interwinding Capacitance3 pF max Non-Shielded Version Pri : Sec 2741B 2741B2 2741G 2741G2 2741C 2741C2 2741H 2741H2 1CT : 2CT 1CT : 2CT 1CT : 2CT 1CT : 2CT 1 : 1.36CT 1 : 1.36CT 1 : 1.37CT 1 : 1.37CT 2745AF2 2745AF2 2745AF2 2745AF2 2745CA2 2745CA2 2745CA2 2745CA2 1. A "2" suffix indicates short terminals (see mechanical section) 2. measured at 10 kHz, 0.1 Vac 3. with terminal 1 grounded 4. There is an internal connection to terminal 8; do not use 2741C 2741C2 2741H 2741H2 SCHEMATICS 2741B 2741B2 2741G 2741G2 S 2 3 S 4 3 2 1 Primary Secondary 5 6 7 6 CT 4 7 Primary 1 5 Secondary (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 T1-51 HIGH FREQUENCY MAGNETICS TM00123 T1/E1 Through Hole Shielded Transformers MECHANICAL 2741B 2741C 2741G 2741H 2741B2 2741C2 2741G2 2741H2 0.56 (14.22) MAX 0.46 (11.68) MAX 0.56 (14.22) MAX 0.46 (11.68) MAX TERMINAL 1 IDENTIFIER 0.35 (8.89) MAX TERMINAL 1 IDENTIFIER 0.155 (3.94) 0.100 (2.54) 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 0.35 (8.89) MAX 1234 0.250 (6.35) 8 76 5 0.110 (2.79) 0.010 (0.25) 0.100 (2.54) 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 1234 0.250 (6.35) 876 5 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 T1-52 |
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