PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA-20BAttenuator,fixed

Microlab/fxr Llc · NSN 5985-01-089-6160 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-089-6160 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-089-6160. Primary manufacturer part number: AA-20B.
Features
  • Attenuator,fixed — FSC 5985
  • Overall Diameter: 0.580 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 CONNECTOR
  • Temperature Sensitivity Attenuation in Decibels: 0.0001
  • Material: STEEL CORROSION RESISTING BODY
  • Power Rating: 2.0 WATTS PEAK
  • Rf Signal Attenuation in Decibels: 20.0
  • Output Impedance Rating in Ohms: 50.0
Applications
  • Applications requiring Steel Corrosion Resisting Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-089-6160, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Microlab/fxr Llc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-089-6160
Primary Part NumberAA-20B
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMicrolab/fxr Llc
StatusACTIVE
Overall Diameter0.580 INCHES NOMINAL IN
Terminal Type and Quantity2 CONNECTOR
Temperature Sensitivity Attenuation in Decibels0.0001
MaterialSTEEL CORROSION RESISTING BODY
Power Rating2.0 WATTS PEAK
Rf Signal Attenuation in Decibels20.0
Output Impedance Rating in Ohms50.0
Attenuation Accuracy in Decibels-1.20 TO 1.20
Coaxial Connector Series DesignationBNC
Input Impedance Rating in Ohms50.0
Voltage Standing Wave Ratio1.25
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Frequency Sensitivity Attenuation in Decibels1.20
Attenuation Accuracy Reference Frequency2.0 GIGAHERTZ
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Application DesignTRANSMISSION LINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5985-00-845-4395G300009S5 INTERCHANGEABLE
Attenuator,fixed
L3harris Technologies, Inc Div Space & Airborne Systems
Cross-Reference Index
Part NumberManufacturer
FP-50-20 Trilithic, Inc. (USA)
XFP-52/20BNC-R Trilithic, Inc. (USA)
500428-5 L3harris Technologies, Inc. Dba Harris Corporation (USA)
AA-20B PRIMARY Microlab/fxr Llc (USA)
Related Parts
5985-00-845-4395INTERCHANGEABLE
ATTENUATOR,FIXED
G300009S5

Frequently Asked Questions

What is NSN 5985-01-089-6160?

NSN 5985-01-089-6160 is a Attenuator,fixed, manufactured by Microlab/fxr Llc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-089-6160?

NSN 5985-01-089-6160 has 4 cross-referenced part numbers: FP-50-20 (Trilithic, Inc.), XFP-52/20BNC-R (Trilithic, Inc.), 500428-5 (L3harris Technologies, Inc. Dba Harris Corporation), AA-20B (Microlab/fxr Llc).

What NSN replaces 5985-01-089-6160?

There is 1 known substitute for 5985-01-089-6160: 5985-00-845-4395. Verify interchangeability with system specifications before substitution.

What are the specifications of AA-20B?

Key specifications for AA-20B: Overall Diameter: 0.580 INCHES NOMINAL IN; Terminal Type and Quantity: 2 CONNECTOR; Temperature Sensitivity Attenuation in Decibels: 0.0001; Material: STEEL CORROSION RESISTING BODY. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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