defining a degree of excellence MODEM TRANSFORMER 0574-1000-05 Bel proudly introduces a new modem transformer for data/fax modem applications including V.34bis 28,800 bps applications. These M transformers exhibit very low distortion E bel values, typically -89dB. Date Code C H A N I C A L S 0574-1000-05 * 1250 Vrms isolation Voltage. * Meets or exceeds requirements of: CAN/CSA-C22.2 (1988) No. 225(M90), and DOC's C3-03 (Issue 7): UL's UL1950; 2nd edition; and FCC's Part 68(58 FR 44907, Aug 25, 1993). * Weight is 5.0 grams. 0.470 (11.94) Max 0.10 (2.54) Min 0.394 (10.0) 0.197(5.00) Typ 4 TM0042 5 SCHEMATIC 0.025 (0.64) Square 6 0.550 (13.97) Max 3 Pin 1 0.550(13.97) Max 1 6 Primary Secondary 3 4 Dimensions are in inches (mm). Dimension tolerance +/- 0.01(0.25) unless otherwise stated. ELECTRICALS @ 25O C. DCR Typical Longitudinal Turns Insertion Reflected Ratio Loss (dB) Impedance Return Loss (Ω) +/- 10% Balance (dB) Min Pins Pins 200Hz to 1000Hz to (ohms) (dB) (+/- 2%) +/- 0.25dB (1-3) (6-4) 1000Hz 4000Hz 1000Hz +/-5% 0574-1000-05 1 : 1 2.5 600 140 145 60 30 40 Part Number Insertion loss measured at 1000Hz. Reflected impedance, distortion, Longitudinal balance measured with 312 ohms across the secondary. Harmonic Distortion is typically -89dB. The -82dB max is measured at 600Hz, -10dBm (V.34) ref. Corporate Office Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302-4496 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: [email protected] Internet: http://www.belfuse.com Far East Office Bel Fuse Ltd. 8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706 Part Number 0574-1000-05 Harmonic Distortion (dB) Max 600Hz -82 Frequency Response (dB) referenced at 1000Hz 300Hz to 4000Hz +/- 0.25 European Office Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K. Tel: 44-1772-556601 Fax: 44-1772-888366 T402