SA3TFM300W-30

Attenuators Overview

The SA3TFM300W-30 is a semi-rigid coaxial cable assembly manufactured by Fairview Microwave, featuring SMA male to TNC female connectors. It utilizes a silver-plated copper center conductor and a PTFE dielectric within a .141 inch diameter semi-rigid cable construction. The assembly is rated for a maximum frequency of 18 GHz with a characteristic impedance of 50 Ohms. It incorporates a gold-plated brass shell and offers a VSWR of 1.3:1 or less. The unit supports a maximum power handling of 200 Watts at DC to 6 GHz and operates within a temperature range of -65°C to +175°C.

Attenuators Feature Summary

• Semi-rigid construction ensures stable electrical performance and mechanical durability in high-frequency applications.
• Silver-plated copper center conductor minimizes signal loss and enhances conductivity across the operational bandwidth.
• Gold-plated brass connector shells provide corrosion resistance and reliable mating cycles in demanding environments.

Attenuators Applications

• Test and measurement instrumentation interconnects
• Aerospace and defense radar systems
• Telecommunications base station components

Attenuators Procurement Notes

Verify that the specific connector gender combination matches the system requirements, as SMA male to TNC female configurations are distinct from other variants. Confirm the physical length and any custom bending specifications align with the installation constraints. Ensure the operating environment does not exceed the specified temperature range of -65°C to +175°C. Check for any required compliance certifications such as REACH or RoHS if mandated by the project standards. Review the datasheet for precise torque specifications during installation to prevent damage to the semi-rigid cable structure.

Attenuators Selection Notes

Select this model when a fixed-length, high-performance interconnect is required between SMA and TNC interfaces. The semi-rigid design is suitable for applications where minimal phase stability and low insertion loss are critical. Consider the 18 GHz frequency limit and 50 Ohm impedance for compatibility with standard RF test equipment. Evaluate the physical space constraints due to the rigid nature of the .141 inch cable, which limits flexibility compared to flexible coaxial alternatives.

Attenuators Part Context

This component belongs to Fairview Microwave's catalog of precision RF cable assemblies designed for high-reliability applications. The series typically includes various connector combinations and lengths, all maintaining consistent electrical characteristics. The use of semi-rigid materials distinguishes these assemblies from flexible counterparts, offering superior shielding and repeatability. This specific part number denotes a unique configuration within the broader portfolio of microwave interconnect solutions.

Attenuators Replacement Considerations

Direct replacements must match the SMA male to TNC female interface and .141 inch semi-rigid construction. Verify that substitute parts maintain the 18 GHz frequency rating and 50 Ohm impedance. Ensure the replacement meets the same temperature and power handling specifications. Cross-reference connector plating and material composition to guarantee equivalent performance in sensitive RF circuits.