ATB3225-75032CT-T001

Overview

The ATB3225-75032CT-T001 is a wound surface-mount balun transformer manufactured by TDK Corporation. It operates within a frequency range of 5 MHz to 100 MHz, converting between unbalanced and balanced signals. The device features a primary impedance of 75 Ohms and a secondary impedance of 50 Ohms. Key electrical specifications include an insertion loss of 1 dB and a phase difference of 180° ± 10°. The component is housed in a compact 1210 package with dimensions of 3.2 mm length, 2.5 mm width, and 2.3 mm height. It is shielded and designed for reliable performance across a temperature range of -25°C to 85°C.

Feature Summary

• Provides signal conversion between 75 Ohm unbalanced and 50 Ohm balanced lines
• Maintains precise 180-degree phase difference with low insertion loss
• Features a shielded design to minimize electromagnetic interference

Applications

• Cable modem signal processing
• RF circuit impedance matching
• Broadband communication systems

Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and tape-and-reel configuration. Confirm that the specified impedance transformation ratio matches the target circuit requirements. Check the operating temperature range against environmental conditions. Ensure compatibility with standard surface-mount assembly processes. Review datasheet specifications for insertion loss and phase balance tolerances before integration.

Selection Notes

Select this component when interfacing 75 Ohm coaxial lines with 50 Ohm balanced circuits in the 5 MHz to 100 MHz band. Consider the 1210 footprint constraints for PCB layout optimization. Evaluate the shielded construction if EMI sensitivity is high. Compare insertion loss specifications against system budget requirements. Verify thermal stability for applications operating near the upper temperature limit.

Part Context

This balun belongs to TDK's ATB series of specialty transformers designed for surface-mount technology. The series offers various impedance ratios and frequency ranges for different RF applications. The ATB3225 variant specifically targets compact designs requiring efficient signal balancing in broadband environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official TDK catalogs for direct equivalents with matching impedance and frequency specifications.