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| MODEM MAGNETICS PCMCIA V.90 Transformers * Designed to match a 600 line to a 290 load while providing isolation and balance in PCMCIA Type II V.90 modem applications Approved by UL and CSA * * TM00404 Minimum interwinding breakdown voltage of 1000 Vrms Qualified per Bellcore TR-TSY-000357-1 * ELECTRICAL SPECIFICATIONS AT 25 C Insertion Loss dB @ 1 kHz Return Loss dB Frequency Response dB 200 Hz - 5 kHz Pri DCR max Sec Harmonic Distortion dB -10 dBm, 600 Hz > 85 Longitudinal Balance dB 300 Hz - 3500 Hz Part Number Turns Ratio 2% 300 Hz - 3500 Hz 2786A 1:1 < 2.9 > 30 < 0.1 165 200 > 60 2786A3 1:1 < 2.9 > 30 < 0.1 165 200 > 85 > 60 2786A5 1:1 < 2.9 > 30 < 0.1 165 200 > 85 > 60 SCHEMATIC 2786A 2786A3 2786A5 1 6 3 Primary 4 Secondary TYPICAL SPICE TRANSMISSION MODEL 145 1 20 pF 3 1.4 mH 175 6 25 k 3.0 H 20 pF 4 (c)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 T4-9 MODEM MAGNETICS TM00404 PCMCIA V.90 Transformers MECHANICALS 0.560 [14.22] max 2786A 0.330 [8.38] 0.200 max [5.08] 4 3 .025 [0.635] 6 1 Terminal 1 Identifier 0.040 [1.02] ref 0.172 [4.37] max 0.096 [2.44] Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. 0.750 [19.05] ref 2786A3 0.180 [4.57] max 0.040 [1.02] 0.005 [0.127] 0.750 [19.05] ref 2786A5 0.750 [19.05] ref 0.040 [1.02] 0.172 [4.37] max 0.052 [1.32] (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 05.00 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 T4-10 |
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