MODEM MAGNETICS European V.34 Modem Transformer TM00406 • Provides isolation and very low harmonic distortion • Approved for use in applications requiring reinforced insulation • Impedance matching for various countries can be achieved using the appropriate resistor and capacitor values • Approved by UL, CSA and BABT • Minimum interwinding breakdown voltage 3000 Vrms • Qualified per Bellcore TR-TSY-000357-1 ELECTRICAL SPECIFICATIONS at 25° C Part Number Turns Ratio ± 2% 2793A 1:1 Insertion Loss dB Return Loss dB Frequency Response dB DCR Ω max @ 1 kHz 300 Hz - 3500 Hz 100 Hz - 4 kHz Pri < 2.0 > 20 < 1.2 115 Harmonic Distortion dB Longitudinal Balance dB Sec -10 dBm, 600 Hz 300 Hz - 3500 Hz 115 > 90 > 60 SCHEMATIC 2793A 1 6 3 4 Primary Secondary TYPICAL SPICE TRANSMISSION MODEL 1 94 10 pF 3 24.5 mH 94 65 k 17 H 6 10 pF 4 ©2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T4-13 MODEM MAGNETICS European V.34 Modem Transformer TM00406 MECHANICAL 2793A 0.40 [10.16] max 0.118 [3.00] 0.020 [0.508] sq. wire 0.710 [18.03] max sq. 0.50 [12.7] 3 4 1 6 0.300 [7.62] Compatible with water-soluble flux and total immersion cleaning process. ©2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 198 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 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 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 T4-14