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Technical Data Sheet
PartsTable / COMPONENT / 3954-100A
3954-100A ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The ATTENUATOR,VARIABLE is a the manufacturer industrial component. Key specifications include power_rating: 2.0 WATTS AVERAGE, overall_width: 4.500 INCHES NOMINAL IN, overall_height: 2.060 INCHES NOMINAL IN, overall_length: 4.500 INCHES NOMINAL IN, frequency_range: 1.000 GIGAHERTZ MINIMUM AND 1.120 GIGAHERTZ MAXIMUM, precious_material: GOLD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-975-6291, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3954-100A
NSN: 5985-00-975-6291
FSC: 5985
CAGE: 09992 — ANTENNA & RADOME RESEARCH ASSOCIATES CORP DBA ARRA INC DIV ARRA INC (USA)
SPECIFICATIONS
power_rating2.0 WATTS AVERAGE
overall_width4.500 INCHES NOMINAL IN
overall_height2.060 INCHES NOMINAL IN
overall_length4.500 INCHES NOMINAL IN
frequency_range1.000 GIGAHERTZ MINIMUM AND 1.120 GIGAHERTZ MAXIMUM
precious_materialGOLD
application_designTRANSMISSION LINE
fsc_application_dataANTENNAS,WAVEGUIDES,AND RELATED EQUIP.
operating_temp_range+0.0 TO 75.0 CELSIUS DEGC
impedance_rating_in_ohms50.0 INPUT-OUTPUT
mounting_facility_patternFOUR POSITION RECTANGULAR
terminal_type_and_quantity2 CONNECTOR, COAXIAL, FEMALE
NSN5985-00-975-6291
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ATTENUATOR,VARIABLE TITLE COMPONENT PN 3954-100A MFR ATTENUATOR,VARIABLE
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 4 FLANGE WITH MOUNTING HOLE
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.154 INCHES NOMINAL IN
•
TERMINAL TYPE AND QUANTITY: 2 CONNECTOR, COAXIAL, FEMALE
•
PRECIOUS MATERIAL AND LOCATION: CONTACT SURFACES GOLD
•
TEST DATA DOCUMENT: 45413-134204-005 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
•
FSC APPLICATION DATA: ANTENNAS,WAVEGUIDES,AND RELATED EQUIP.
•
PRECIOUS MATERIAL: GOLD
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY TYPE AND QUANTITY4 FLANGE WITH MOUNTING HOLE
OVERALL LENGTH4.500 INCHES NOMINAL IN
UNTHREADED MOUNTING HOLE DIAMETER0.154 INCHES NOMINAL IN
TERMINAL TYPE AND QUANTITY2 CONNECTOR, COAXIAL, FEMALE
PRECIOUS MATERIAL AND LOCATIONCONTACT SURFACES GOLD
TEST DATA DOCUMENT45413-134204-005 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
FSC APPLICATION DATAANTENNAS,WAVEGUIDES,AND RELATED EQUIP.
PRECIOUS MATERIALGOLD
ATTENUATION VARIATION METHODCONTINUOUS
OPERATING TEMP RANGE+0.0 TO 75.0 CELSIUS DEGC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
2691Interchangeable
interchangeable cross-reference
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3754Interchangeable
interchangeable cross-reference
interchangeable
2M1450Interchangeable
interchangeable cross-reference
interchangeable
64011Interchangeable
interchangeable cross-reference
interchangeable
705834Interchangeable
interchangeable cross-reference
interchangeable
116776Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3954-100A?
3954-100A is a ATTENUATOR,VARIABLE.
What parts can replace 3954-100A?
There are 18 known substitutes for 3954-100A: 2691, 3754, 2M1450 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3954-100A?
3954-100A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-975-6291. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026