PCMCIA Modem Transformers T-33003/T-33004 Compatible with 56 kb/s Technologies Impedance matching transformers for telecommunications. Schematic Style "B" Ideal for PCMCIA Type II data/fax modem cards Schematic Style "C" 1 V.32 bis/V.17 14400 bps applications 6 PRI SEC. 2 9 PRI SEC. Longitudinal Balance is 60dB minimum 3 Designed to meet FCC Part 68 4 4 7 Custom Designs Available Electrical Specifications at 25OC Parameter T-33001 T-33002 T-33003 T-33004 Units Impedance R Load PRI. SEC. 600 346 600 346 600 392 600 294 Ω Ω Turns Ratio + 2% 1:1 1:1 1:1 1:1 0 0 0 0 mA PRI. + 10% SEC. + 10% 127 150 127 150 105 112 180 156 Ω Ω max., ref. 1 kHz 3.3 3.3 2.35 2.7 dB min., 300 Hz to 3.5 kHz 25 25 20 30 dB 60 200Hz - 4kHz 60 200Hz - 4kHz + 0.25 +0.25 + 0.25 +0.25 dB -76 -76 -76 -83 dB 1000 1000 1650 1000 VRMS B B C C Direct Current in Pri. (DCI) maximum DC Resistance 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 60 60 300Hz - 3.5kHz 300Hz - 3.5kHz T-33003 & T-33004 Package Dimensions in Inches (mm) T-33001 Package T-33002 Package .050 (1.27) .520 (13.21) .520 (13.21) .400 (10.16) .400 (10.16) 1 2 3 6 .330 5 (8.38) 4 .079 (2.00) TYP. .164 (4.17) .164 (4.17) 1 2 3 6 7 8 9 10 .020 (0.50) TYP. 5 4 2 Rhombus Industries Inc. .660 (16.76) MAX. 1 .660 (16.76) MAX. 6 .330 5 (8.38) 4 .027 (0.69) .768 (19.50) Terminal #1 Indicator Specifications subject to change without notice. dB For other values & Custom Designs, contact factory. 2 .172 (4.37) MAX. .053 (1.35) PCMCIA2 - 10/98 15801 Chemical Lane, Huntington Beach, CA 92649-1595 Tel: (714) 898-0960 • Fax: (714) 896-0971