MABA-010129-CT4A40

Balun Overview

The MABA-010129-CT4A40 is a broadband RF balun transformer manufactured by MACOM Technology Solutions. It operates within a frequency range of 5 MHz to 1.2 GHz, providing an impedance transformation ratio of 1:4 between balanced and unbalanced ports. The device supports 50 Ohm unbalanced and 75 Ohm balanced configurations. Key electrical specifications include a maximum insertion loss of 1.2 dB and a minimum return loss of 16 dB. It is housed in a compact 6-SMD gull wing package with five functional leads, designed for surface mount technology.

Balun Feature Summary

• Provides 1:4 impedance transformation between 50 Ohm unbalanced and 75 Ohm balanced lines
• Operates as a broadband transmission line transformer across the 5 MHz to 1.2 GHz spectrum
• Utilizes a low-cost surface mount package with gull wing leads for automated assembly

Balun Applications

• Broadband CATV applications
• RF signal balancing and impedance matching circuits
• Wireless communication infrastructure components

Balun Procurement Notes

Verify the specific suffix CT4A40 when ordering, as it denotes the particular tape and reel or bulk packaging configuration and lead finish. Confirm that the 6-SMD gull wing footprint matches the target PCB design, noting the five functional lead layout differs from standard six-pad arrangements. Ensure compatibility with reflow soldering profiles suitable for this surface mount component type.

Balun Selection Notes

Select this component when a 1:4 impedance transformation is required for broadband signals up to 1.2 GHz. It is specifically suited for applications involving 50 Ohm to 75 Ohm conversion, such as interfacing with CATV systems. Consider the SMD gull wing package for space-constrained designs requiring reliable surface mounting without through-hole processing.

Balun Part Context

This balun belongs to MACOM's portfolio of passive RF components designed for high-performance signal integrity. It serves as a critical interface element in systems requiring balanced-to-unbalanced conversion. The device complements active amplifiers and mixers by ensuring proper impedance matching and signal symmetry across wide bandwidths in modern wireless and broadcast architectures.

Balun Replacement Considerations

Public documentation indicates the TC1-1-13MA+ as a related alternative; however, it features a different pad layout and thermal characteristics. Verify mechanical footprint compatibility before substitution. No other direct equivalent part numbers are confirmed in the provided source material.