Fluke 4119-50 RF AttenuatorStraight50 ΩMaleFemale

This RF attenuator is a straight BNC male-to-female inline device designed to reduce signal amplitude in 50Ω systems across a mid‑band frequency range. It connects via a BNC plug to a BNC socket and is intended for use where controlled attenuation is required without altering impedance characteristics. The construction combines a nickel‑plated outer body with gold‑plated contacts seated on beryllium copper alloy and brass contact materials, enabling stable electrical contact in typical RF environments.

• 50Ω nominal impedance maintains system matching
• Operates from 250 MHz to 500 MHz for mid‑band applications
• Gold‑plated contact reduces contact resistance and wear
• Nickel body rated to 102°C for elevated temperature tolerance
• Straight BNC male‑to‑female orientation simplifies inline connections

• Suitable for RF test benches covering 250 MHz-500 MHz
• Ideal for attenuating signals between BNC‑connected instruments
• Used with 50Ω transmission lines requiring impedance preservation
• Can be used for signal‑level adjustment in laboratory setups
• Used for temporary inline attenuation in field measurements

It has a BNC plug on one end and a BNC socket on the other.

Contacts comprise gold plating over beryllium copper alloy and brass.

The outer plating and construction are rated for a maximum operating temperature of 102°C.

The attenuator is intended for use in systems with a 50Ω characteristic impedance.

The device is supplied in a straight inline configuration for direct coupling of coaxial runs.