The realm of radio frequency (RF) and electronic instrumentation relies heavily on precise signal conditioning. Central to this process are components like the Fixed Attenuator, a crucial device designed to predictably reduce the strength of an alternating current (AC) signal without introducing significant waveform distortion. We are focusing today on the specifics of part number 5985-00-444-6098, a standardized component with significant industry relevance.
Defining the Component
A fixed attenuator serves a singular purpose: to attenuate (weaken) a signal by a set, predetermined value while ensuring the integrity of the signal waveform is maintained through proper impedance matching. For the NSN 5985-00-444-6098, this attenuation value is precisely 26.0 Decibels (dB).
Key Technical Specifications
Understanding the operational envelope of this attenuator is vital for its correct application, particularly in transmission line systems:
- Impedance Matching: The unit maintains stringent compatibility with standard RF systems, featuring both an Input Impedance Rating and an Output Impedance Rating of 50.0 Ohms.
- Frequency Range: This component is highly versatile, operational from a minimum of 0.000 Hertz up to a maximum of 3000.000 Megahertz (3.0 GHz).
- VSWR Performance: Voltage Standing Wave Ratio (VSWR) is a measure of impedance match quality. For this part, the specified VSWR is between 1.15 and 1.20, depending on the specific frequency band it operates within (0 to 1.0 GHz, or 1.0 to 3.0 GHz). Low VSWR is critical for minimizing reflections.
- Power Handling: The attenuator is rated for 1.0 Watt (Average) power and can handle significant transient loads up to 200.0 Watts (Peak).
- Accuracy: The attenuation accuracy is highly controlled, specified at ±0.50 dB.
Physical Characteristics and Construction
The physical structure of the 5985-00-444-6098 suggests robust construction suitable for integration into test equipment or communication racks. It features a ROUND body style with terminals located on opposite surfaces, facilitating inline insertion into a coaxial circuit.
- Dimensions: The nominal overall length is 2.875 inches, with a nominal diameter of 0.750 inches.
- Connectors: It utilizes N-type coaxial connectors (4 in total, indicating likely two input and two output configurations or specialized mounting configurations, though typically an attenuator has one input and one output pair).
- Material Finish: To ensure longevity and maintain conductivity, the body undergoes a plating process involving Copper Flash, Nickel Plating, and a final Chromium Plating.
Manufacturing and Sourcing Context
This specific configuration is associated with the manufacturer EATON CORPELECTRONIC INSTRUMENTATION DIV, identified by Cage Code 88869. The associated commercial part number frequently cross-referenced with the NSN is 90513-26. The standardization of this item, dating back to its initial assignment in January 1963 (Supply Group 59), underscores its long-standing utility in military and high-reliability electronic systems requiring calibrated signal reduction across broad operational spectra.