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| HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Shielded Transformer * * Designed for DS1, DS1C, and CEPT applications Electrostatic shield provides improved longitudinal signal suppression 2741J has an internal connection to terminal 8; do not use * * * * * 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 TM00124 ELECTRICAL SPECIFICATIONS AT 25 C DCR max Turns Ratio 2% Part Number Pri : Sec Primary Inductance1 mH min Pri Leakage Inductance2 H max Sec Interwinding Capacitance4 pF max Minimum Interwinding Breakdown Voltage Vrms 2741J 2741K 1 CT3 : 1.37 1:1 0.923 1.25 0.83 0.7 1.25 0.85 2.03 2.0 8 3.5 850 500 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. connect 2 and 6 4. with pin 1 grounded SCHEMATIC 2741J 2741K S 3 6 CT 2 7 PRIMARY 5 1 SECONDARY 4 4 5 2 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 T1-53 HIGH FREQUENCY MAGNETICS TM00124 T1/E1 Through Hole Shielded Transformer MECHANICAL 2741J 2741K 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 T1-54 |
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