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| HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Shielded Transformers * Operate at the T1 rate of 1.544 Mb/s and the E1 rate of 2.084 Mb/s Interwinding Electrostatic Shield provides low capacitance and high EMI suppression There is an internal connection to Terminal 8; do not use Minimum interwinding breakdown voltage of 2200 Vdc * * * * 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 TM00114 * * * ELECTRICAL SPECIFICATIONS AT 25 C Turns Ratio 2% Part Number Pri : Sec DCR max Pri Sec Inductance Unbalance5 of CT windings Winding % max Primary Inductance1 mH Min Leakage Inductance2 H max Interwinding Capacitance4 pF max 2741S 2741T 1 CT : 2 CT 1 CT : 1.3753 3.15 0.923 2.3 1.13 5.8 1.7 6.8 1.63 7.5 83 Pri & Sec Pri 0.2 0.1 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. connect 2 to 6 4. connect 1 to ground 5. measured at 20 kHz SCHEMATICS 2741S 2741T 5 S S 4 3 6 CT 2 4 CT 6 3 CT 5 7 2 1 PRIMARY SECONDARY 7 1 PRIMARY 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 T1-57 HIGH FREQUENCY MAGNETICS TM00114 T1/E1 Through Hole Shielded Transformers MECHANICAL 2741S 2741T 0.56 (14.22) MAX 0.46 (11.68) MAX TERMINAL 1 IDENTIFIER 0.35 (8.89) MAX 0.155 (3.94) 0.100 (2.54) 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 1234 0.250 (6.35) 8 76 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 T1-58 |
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