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Technical Data Sheet
PartsTable / MRO / 8558737-501
8558737-501 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include body_width: 0.700 INCHES MAXIMUM IN, body_length: 1.280 INCHES MAXIMUM IN, body_material: METAL, inclosure_type: ENCASED, style_designator: RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE, features_provided: ACTIVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-01-154-7303, 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
MRO→ MRO_GENERAL→ 8558737-501
NSN: 5915-01-154-7303
FSC: 5915
CAGE: 49671 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN DIV LOCKHEED MARTIN (USA)
SPECIFICATIONS
body_width0.700 INCHES MAXIMUM IN
body_length1.280 INCHES MAXIMUM IN
body_materialMETAL
inclosure_typeENCASED
style_designatorRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
features_providedACTIVE
operating_temp_range-55.0 TO 85.0 CELSIUS DEGC
load_impedance_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
reference_frequency_per_function1.0 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
mounting_facility_type_and_quantity24 TERMINAL LOCATION NOT OTHERWISE SPECIFIED
source_impedance_rating_per_function50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
functional_terminal_type_and_quantity1 PIN GROUND THIRD FUNCTION
NSN5915-01-154-7303
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN 8558737-501 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
OPERATING TEMP RANGE: -55.0 TO 85.0 CELSIUS DEGC
•
BODY WIDTH: 0.700 INCHES MAXIMUM IN
•
LOAD IMPEDANCE PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 PIN OUTPUT SECOND FUNCTION
•
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS: 3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
•
INCLOSURE TYPE: ENCASED
•
BODY MATERIAL: METAL
•
REFERENCE FREQUENCY PER FUNCTION: 1.0 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING TEMP RANGE-55.0 TO 85.0 CELSIUS DEGC
BODY WIDTH0.700 INCHES MAXIMUM IN
LOAD IMPEDANCE PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 PIN OUTPUT SECOND FUNCTION
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
INCLOSURE TYPEENCASED
BODY MATERIALMETAL
REFERENCE FREQUENCY PER FUNCTION1.0 KILOHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 PIN GROUND THIRD FUNCTION
SOURCE IMPEDANCE RATING PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
CA9Interchangeable
interchangeable cross-reference
interchangeable
15281Interchangeable
interchangeable cross-reference
interchangeable
CA9-15281Interchangeable
interchangeable cross-reference
interchangeable
MICROFOAMInterchangeable
interchangeable cross-reference
interchangeable
M1528-1Interchangeable
interchangeable cross-reference
interchangeable
MICROFOAM SURGICAL TAPEInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8558737-501?
8558737-501 is a RESISTOR,VARIABLE,WIRE WOUND,PRE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 8558737-501?
There are 12 known substitutes for 8558737-501: CA9, 15281, CA9-15281 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8558737-501?
8558737-501 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-01-154-7303. 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