LCAT7438-7

Overview

The LCAT7438-7 is a fixed RF attenuator manufactured by L-com, designed for signal level reduction in radio frequency circuits. It provides an attenuation value of 7dB with a nominal impedance of 75 Ohms. The component operates within a frequency range of 0 Hz to 4 GHz and supports a power handling capacity of 2W. It utilizes BNC connectors configured as an in-line module, featuring a plug-to-jack interface suitable for standard coaxial interconnections.

Feature Summary

• Provides precise 7dB signal attenuation for RF applications
• Designed for 75 Ohm impedance systems
• Operates effectively across a frequency range up to 4 GHz
• Features robust BNC in-line module construction

Applications

• RF signal conditioning in broadcast equipment
• Signal level adjustment in 75 Ohm transmission lines
• Test and measurement setups requiring fixed attenuation
• Video distribution systems operating at frequencies up to 4 GHz

Procurement Notes

Verify the specific manufacturer part number LCAT7438-7 against official L-com documentation to ensure compatibility with 75 Ohm systems. Confirm that the required attenuation value of 7dB and power rating of 2W meet system specifications. Check connector orientation and interface type to match existing BNC infrastructure. Ensure compliance with relevant environmental standards such as RoHS if applicable to the deployment environment.

Selection Notes

Select this component when a fixed 7dB attenuation is required in a 75 Ohm environment. The 4 GHz frequency range makes it suitable for video and broadband RF applications. Consider the 2W power handling capability to ensure safe operation under expected load conditions. The BNC in-line form factor allows for easy integration into existing cabling runs without requiring additional adapters or complex mounting solutions.

Part Context

This component belongs to the LCAT series of fixed attenuators from L-com, which offers various attenuation values and impedance options. The LCAT7438-7 specifically addresses 75 Ohm applications, distinguishing it from the 50 Ohm variants like the LCAT7437-7. It serves as a passive RF component essential for maintaining signal integrity in high-frequency circuits where precise power reduction is necessary.

Replacement Considerations

Publicly confirmed parameter-equivalent substitutes include PE7438-7 from Pasternack. Verify that any replacement maintains the 7dB attenuation, 75 Ohm impedance, and 4 GHz frequency range. Ensure mechanical compatibility with BNC in-line connections before substitution.