LCAT7438-2

Overview

The LCAT7438-2 is a fixed RF attenuator manufactured by L-com, designed for signal reduction in coaxial systems. It provides a typical attenuation of 2 dB with a maximum power handling capacity of 2 Watts (CW). The component operates within a frequency range from DC to 4 GHz and maintains a characteristic impedance of 75 Ohms. It features BNC connectors, specifically a male plug on one end and a female jack on the other, facilitating inline integration into video or data transmission lines.

Feature Summary

• Provides precise 2 dB signal attenuation for RF applications
• Supports high power handling up to 2 Watts continuous wave
• Operates effectively across a broad bandwidth from DC to 4 GHz
• Ensures low signal reflection with VSWR typically below 1.35:1

Applications

• Video surveillance system signal conditioning
• RF test and measurement setups requiring precise loss
• Broadcasting equipment signal level adjustment
• Telecommunications infrastructure line matching

Procurement Notes

Verify the specific model suffix to confirm the exact attenuation value, as the series includes variants such as 2dB, 6dB, 8dB, and 20dB. Ensure the procurement documentation explicitly states the 75 Ohm impedance requirement, as this differs from standard 50 Ohm RF components. Confirm connector gender configuration matches the installation interface requirements before finalizing orders.

Selection Notes

Select this component when a 75 Ohm impedance match is critical for minimizing reflections in video or broadband data lines. The 2W power rating makes it suitable for moderate signal levels, but verify that input power does not exceed this limit to prevent damage. Consider the physical size and BNC interface compatibility with existing cabling infrastructure during system design.

Part Context

This part belongs to L-com's family of fixed attenuators designed for 75 Ohm systems. These components are engineered for stability and reliability in commercial and industrial environments. The series offers various attenuation values to suit different signal management needs while maintaining consistent electrical performance across the specified frequency range.

Replacement Considerations

Direct substitutes must match the 75 Ohm impedance, 2 dB attenuation, and BNC connector type. Verify that any alternative component supports the same 2W power rating and 4 GHz frequency range. Check mechanical dimensions to ensure fit within the intended enclosure or panel mount location.