LCAT7438-9

Overview

The LCAT7438-9 is a fixed RF attenuator manufactured by L-com, designed for use in coaxial transmission systems. It provides a nominal attenuation of 9 dB with a characteristic impedance of 75 Ohms. The device operates within a frequency range of DC to 4 GHz and supports a maximum power handling capacity of 2 Watts continuous wave. It features a BNC male connector on one end and a BNC female connector on the other, facilitating direct inline integration into signal paths.

Feature Summary

• Provides precise 9 dB signal reduction for regulated performance
• Features a coaxial in-line design with BNC male and female connectors
• Operates across a wide spectrum from DC to 4 GHz
• Maintains 75 Ohm impedance compatibility for video and data applications

Applications

• Communication systems requiring signal strength adjustment
• Video transmission networks needing attenuation control
• Data transmission lines ensuring receiver sensitivity protection
• Test and measurement setups for signal level regulation

Procurement Notes

Verify that the specific part number matches the required 9 dB attenuation value and 75 Ohm impedance specification. Confirm connector orientation requirements for BNC male-to-female inline installation. Ensure operational frequency limits up to 4 GHz align with system bandwidth needs. Check power handling capabilities against peak signal levels to prevent damage.

Selection Notes

Select this component when a fixed 9 dB reduction is necessary within a 75 Ohm system architecture. Consider the 4 GHz frequency limit for high-speed digital or video signals. Evaluate the 2W power rating against actual line power levels. Choose between similar models only if different attenuation values like 5dB or 10dB are required.

Part Context

This model belongs to the LCAT7438 series of fixed attenuators from L-com. The series includes variants with different attenuation values such as 4dB, 5dB, and 10dB, all sharing similar physical dimensions and connector types. These components are standardized for 75 Ohm applications, distinguishing them from 50 Ohm RF counterparts used in general wireless communications.

Replacement Considerations

Compatible substitutes include other LCAT7438 series parts with identical 9 dB attenuation and 75 Ohm impedance. Verify connector gender and interface type before substitution. Generic 75 Ohm BNC attenuators may serve as alternatives if electrical specifications match exactly.