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Technical Data Sheet
PartsTable / COMPONENT / 449A
449A ✓ 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 control_type: REMOTE, overall_width: 1.625 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 1.688 INCHES NOMINAL IN, overall_length: 5.625 INCHES NOMINAL IN, basic_shape_style: RECTANGULAR OR SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-172-9778, 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
449A
NSN: 5985-00-172-9778
FSC: 5985
CAGE: 92755 — NORTHROP GRUMMAN SYSTEMS CORP DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
control_typeREMOTE
overall_width1.625 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height1.688 INCHES NOMINAL IN
overall_length5.625 INCHES NOMINAL IN
basic_shape_styleRECTANGULAR OR SQUARE
application_designTRANSMISSION LINE
fsc_application_dataTELEPHONE AND TELEGRAPH EQUIPMENT
end_item_identificationAN/TSC 38B
operating_control_methodAUTOMATIC
circuit_construction_typeSOLID STATE
NSN5985-00-172-9778
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ATTENUATOR,VARIABLE TITLE COMPONENT PN 449A MFR ATTENUATOR,VARIABLE
KEY FEATURES
•
APPLICATION DESIGN: TRANSMISSION LINE
TECHNICAL CHARACTERISTICS (FLIS)
APPLICATION DESIGNTRANSMISSION LINE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
150Interchangeable
interchangeable cross-reference
interchangeable
7139Interchangeable
interchangeable cross-reference
interchangeable
449AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 449A?
449A is a ATTENUATOR,VARIABLE.
What parts can replace 449A?
There are 3 known substitutes for 449A: 150, 7139, 449A. Substitute compatibility should be verified for your specific system.
What is the NSN for 449A?
449A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-172-9778. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026