TC4-25G2+

Balun Overview

The TC4-25G2+ is an RF balun transformer manufactured by Mini-Circuits, designed for surface-mount applications. It operates within a frequency range of 500 MHz to 2.5 GHz and provides a 1:4 impedance transformation ratio between unbalanced and balanced ports. The component utilizes a 6-SMD (5 leads) flat lead package configuration. Key electrical specifications include a maximum insertion loss of 3 dB and a minimum return loss of 6.09 dB. It supports a maximum DC current of 30 mA and has a power rating of 250 mW. The device functions reliably across an operating temperature range from -40°C to +85°C.

Balun Feature Summary

• Provides 1:4 impedance transformation for RF signal balancing
• Operates effectively across the 500 MHz to 2.5 GHz frequency spectrum
• Designed for compact surface-mount integration with flat lead packaging

Balun Applications

• S-band upconverter circuit design
• RF front-end signal processing
• Balanced-to-unbalanced signal conversion in wireless systems

Balun Procurement Notes

Verify the specific ordering suffix and manufacturer part number against official Mini-Circuits documentation to ensure correct component identification. Confirm that the requested variant matches the required frequency range and impedance ratio for the intended application. Cross-reference datasheet parameters such as insertion loss and return loss with system requirements prior to procurement.

Balun Selection Notes

Select this component when a 1:4 impedance transformation is required within the 500 MHz to 2.5 GHz band. Ensure the PCB layout accommodates the 6-SMD flat lead package dimensions. Verify that the thermal environment remains within the specified -40°C to +85°C operational limits. Consider the 30 mA maximum DC current rating if direct current paths are present in the circuit design.

Balun Part Context

This component belongs to the TC4 series of core and wire transformers from Mini-Circuits. The series offers various impedance ratios and frequency ranges tailored for different RF applications. The TC4-25G2+ specifically addresses needs for S-band operations requiring balanced-to-unbalanced conversion in a small form factor suitable for modern surface-mount assembly processes.

Balun Replacement Considerations

Consult official Mini-Circuits substitution guides for verified alternative part numbers. Ensure any replacement maintains the same 1:4 impedance ratio and covers the 500 MHz to 2.5 GHz frequency range. Verify package compatibility and electrical performance metrics before implementation.