Modem Coupling & Voiceband Transformers Low Distortion Schematic "A" 2 Low Profile /SMD Versions 8 PRI Most Parts Listed are Suitable for V.32 Applications Schematic "C" 1 SEC. 3 5 PRI 5 SEC. 4 8 Electrical Specifications at 25OC Parameter T-33000 T-843 Units Ω Ω Impedance R Load PRI. SEC. 600 487 600 600 Turns Ratio + 2% 1:1 1:1 0 0 mA 67 + 10% 85 + 10% 55 + 10% 43 + 10% Ω Ω max., ref. 1 kHz 1.5 1.0 dB min., 300 Hz to 3.5 kHz 25 20 dB 60 60Hz - 1kHz -- dB + 0.5 + 0.7 dB -60 -- dB 1250 150 VRMS A C Direct Current in Pri. (DCI) maximum DC Resistance PRI. SEC. Insertion Loss Return Loss Longitudinal Balance minimum Frequency Response 300 Hz to 3.5 kHz Total Harmonic Distortion typ. 600 Hz, -10 dBm Isolation minimum Schematic Style Package for T-33000 & T-843 .410 (10.4) 8 1 .248 (6.30) .080 (2.0) Footprint Contact Surface Area, Not PCB Pad Layout .012 (0.3) .022 (0.55) .394 (10.0) 4 5 .080 (2.0) TYP. .024 (0.6) TYP. .024 (0.6) TYP. .453 (11.50) Dimensions in Inches (mm) Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 4 COUPLING - 9/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971 Modem Coupling & Voiceband Transformers Low Distortion Low Profile /SMD Versions Most Parts Listed are Suitable for V.32 Applications Electrical Specifications at 25OC T-31103 T-531 Units Impedance R Load PRI. SEC. 600 365 600 470 Ω Ω Turns Ratio + 2% 1:1 1:1 0 0 mA 118 + 10% 118 + 10% 68 max. 102 max. Ω Ω 2.15 1.2 dB 25 30 dB 60 200Hz - 1kHz 60 200Hz - 4kHz dB 300 Hz to 3.5 kHz +0.25 +0.25 dB minimum 1100 1100 VRMS B D Parameter Direct Current in Pri. (DCI) maximum DC Resistance PRI. SEC. Insertion Loss max., ref. 1 kHz Return Loss min., 300 Hz to 3.5 kHz Longitudinal Balance minimum Frequency Response Isolation Schematic Style 1 6 5 4 2 SEC. 2 5 3 4 .032 (0.8) TYP. .028 (0.7) TYP. Dimensions in Inches (mm) .394 (10.00) MAX. .024 (0.61) 6 Footprint Contact Surface Area, Not PCB Pad Layout .375 (9.53) MAX. Bottom View 1 1 .100 (2.5) TYP. Package for T-531SM .370 (9.40) MAX. .110 (2.79) MIN. .098 (2.49) 6 Schematic "D" .630 (16.0) .465 (11.81) MAX. SEC. 5 .028 (0.7) .606 (15.4) EP7 Style Thru-hole PRI .575 (14.6) .012 (0.30) .100 (2.5) 10 PRI Package for T-31103 .290 (7.37) Schematic "B" .080 (2.03) EP7 Style Surface Mount .375 (9.53) MAX. .375 (9.53) MAX. .025 (0.64) .039 (0.99) .34 (8.6) Package for T-531 .098 (2.50) .028 (0.70) .505 (12.83) .490 (12.45) 3 Specifications subject to change without notice. Rhombus Industries Inc. For other values & Custom Designs, contact factory. 5 COUPLING - 9/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971