LCAT7491-3

Overview

The LCAT7491-3 is a fixed attenuator from L-com designed for RF applications up to 6 GHz. It provides an attenuation value of 3 dB and handles a power rating of 10 Watts. The component features NEX10 male-to-NEX10 connectors and maintains a 50 Ohm impedance. This device serves as a precision interconnect solution for signal level adjustment in high-frequency systems.

Feature Summary

• Provides precise 3 dB signal attenuation for RF circuitry
• Operates effectively within the 0 Hz to 6 GHz frequency range
• Supports high-power handling with a 10 Watt rating
• Utilizes robust NEX10 male connectors for secure interfacing

Applications

• RF signal level reduction in test and measurement equipment
• Impedance matching and isolation in wireless communication systems
• Signal conditioning in radar and electronic warfare applications

Procurement Notes

Verify the specific connector gender and interface type, as NEX10 variants exist. Confirm the attenuation value matches the design requirement of 3 dB rather than other values like 6 dB or 20 dB found in similar series parts. Ensure the 10W power rating aligns with system thermal constraints. Check datasheet for detailed VSWR specifications.

Selection Notes

Select this model when a fixed 3 dB loss is required at frequencies up to 6 GHz. The NEX10 interface offers superior performance over standard N-type connectors. Consider the 10W power capacity for high-power transmission lines. Compare against LCAT7491-6 if a 6 dB loss is needed instead.

Part Context

This part belongs to L-com's LCAT7491 series of fixed attenuators. The series includes variants with different attenuation values such as 3 dB, 6 dB, and 20 dB. All share the same NEX10 male-to-male configuration and 50 Ohm impedance, differing primarily in their decibel loss specifications.

Replacement Considerations

Direct substitutes include LCAT7491-6 (6 dB) and LCAT7491-20 (20 dB) if attenuation requirements differ. Verify that any replacement maintains the NEX10 interface and 6 GHz frequency limit.