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