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| HIGH FREQUECY MAGNETICS T1/E1 Surface Mount Transformer * Operates at the T1 rate of 1.544 Mbits/s and at the E1 rate of 2.048 Mbits/s Designed for transmit and receive line interface applications Low capacitance design for EMI suppression * * * Dual ratio for both 75 and 120 operation 1500-Volt isolation Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias * * * * 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 TM00139 * ELECTRICAL SPECIFICATIONS AT 25 C Nominal Turns Ratio 2% Inductance1 mH min DCR Part Number max (4-1) 1.1 (5-2) 1.1 (3-8) 0.4 Leakage Inductance 2 H max & min (4-1) 0.70 Interwinding Capacitance3 pF max (4-1) & (5-2) 26 (4-1) & (3-8) 28 (4-1):(5-2) 2779H 1 : 1.07 (4-1):(5-8) 1 : 1.37 (4-1) 1.65 Minimum Interwinding Breakdown Voltage Vrms 1500 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.10 Vac 3. measured at 1 kHz, 1 Vac SCHEMATICS 2779H 4 5 2 3 1 8 1 : 1.07 1 : 1.37 (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 T1-87 HIGH FREQUECY MAGNETICS TM00139 T1/E1 Surface Mount Transformer MECHANICAL 2779H 8 7 6 5 8 TERMINAL 1 IDENTIFIER 1 0.350 (8.89) MAX 0.004 7 6 5 0.256 (6.50) 2 3 4 0.160 (4.06) 0.050 (1.27) 0.100 (2.54) 0.100 1 2 3 4 1 2 3 4 8 EDGES 0.490 (12.45) MAX 0.430 (10.92) MAX 0.500 (12.7) MAX 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 T1-88 |
Price & Availability of 2779H
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