TC1.33-1T-75X+

Balun Overview

The TC1.33-1T-75X+ is an RF transformer manufactured by Mini-Circuits, designed for surface-mount applications. It operates within a frequency range of 3 MHz to 500 MHz and features a 1:1.33 turns ratio. The component provides impedance conversion from 75 Ohms unbalanced to 100 Ohms balanced. It utilizes a core and wire construction method housed in a 5-SMD module package. Typical performance data indicates an average insertion loss ranging from 0 dB to approximately 2.0 dB across the operational spectrum. The device exhibits excellent return loss characteristics, with typical values around 23 dB, ensuring high signal integrity during transmission.

Balun Feature Summary

• Provides precise impedance matching between 75 Ohm unbalanced and 100 Ohm balanced lines
• Delivers excellent return loss performance for efficient signal transmission
• Utilizes cost-effective core and wire construction technology

Balun Applications

• RF transmitter and receiver circuits requiring balanced-to-unbalanced conversion
• Wireless communication systems operating within the specified frequency band
• RF test equipment signal conditioning stages

Balun Procurement Notes

Verify the specific ordering suffix and package variant against the official Mini-Circuits datasheet to ensure compatibility with design requirements. Confirm that the 5-SMD module form factor aligns with PCB layout constraints. Cross-reference the electrical specifications, particularly the 3 MHz to 500 MHz range and 1:1.33 ratio, with system design parameters. Ensure compliance with RoHS directives if required by the project specifications.

Balun Selection Notes

Select this component when a transition from 75 Ohm unbalanced sources to 100 Ohm balanced loads is required within the 3 MHz to 500 MHz bandwidth. Consider the typical 23 dB return loss for applications demanding high signal reflection suppression. Evaluate the surface-mount package dimensions against available board space. Compare insertion loss characteristics against alternative baluns to determine suitability for low-loss signal paths.

Balun Part Context

This component belongs to the Mini-Circuits TC series of RF transformers, which are engineered for compact surface-mount integration. The series supports various impedance ratios and frequency ranges, catering to diverse RF design needs. The TC1.33-1T-75X+ specifically addresses the niche requirement of converting 75 Ohm signals to 100 Ohm balanced configurations, fitting into the broader portfolio of passive RF devices used in wireless and broadcast infrastructure.

Balun Replacement Considerations

Consult the official Mini-Circuits replacement guide or distributor cross-reference tools for verified substitute part numbers. Ensure any alternative component matches the 1:1.33 ratio, 75 Ohm to 100 Ohm impedance transformation, and 3 MHz to 500 MHz frequency range. Verify package compatibility and electrical performance metrics before substitution.