LCAT7438-5

Overview

The LCAT7438-5 is a fixed RF attenuator manufactured by L-com, designed for use in 75 Ohm impedance circuits. It provides a nominal attenuation value of 5 dB with a frequency range extending from 0 Hz to 4 GHz. The component supports a maximum power handling capacity of 2 Watts (CW). It features BNC male to BNC female connectors and maintains a Voltage Standing Wave Ratio (VSWR) of less than 1.35:1.

Feature Summary

• Provides precise 5 dB signal attenuation within a wide DC to 4 GHz operational bandwidth
• Engineered for compatibility with standard 75 Ohm coaxial transmission lines
• Utilizes robust BNC male-to-female interface for secure in-line connection
• Maintains low VSWR to ensure minimal signal reflection and optimal circuit performance

Applications

• Signal level adjustment in broadcast video distribution networks
• Attenuation in professional audio and video monitoring systems
• Impedance matching and signal conditioning in 75 Ohm RF test setups
• Cable television infrastructure signal management

Procurement Notes

Verify the specific part number suffix against manufacturer documentation to confirm connector type and tolerance specifications. Ensure that the operating environment remains within the stated 2W power limit and 4 GHz frequency range. Cross-reference datasheet revisions to confirm material composition and connector plating details required for your specific application integrity.

Selection Notes

Select this component when a fixed 5 dB reduction is required in a 75 Ohm system. Confirm that the BNC interface matches existing cabling infrastructure. Evaluate the 2W power rating against peak signal levels to prevent thermal damage. Consider the VSWR specification for high-frequency applications where signal integrity is critical across the full DC to 4 GHz spectrum.

Part Context

This model belongs to L-com's series of fixed coaxial attenuators designed for 75 Ohm environments. These components are typically used to reduce signal strength without introducing significant distortion or reflection. The series offers various attenuation values to suit different network requirements while maintaining consistent electrical characteristics across the frequency band.

Replacement Considerations

Compatible substitutes include other 5 dB, 75 Ohm, BNC fixed attenuators from manufacturers such as Amphenol or Pasternack, provided they meet the same DC-4 GHz frequency range and 2W power handling specifications. Verify connector gender and impedance match before integration.