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Technical Data Sheet
PartsTable / MRO / 8558737-502
8558737-502 ✓ 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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include body_width: 0.600 INCHES NOMINAL IN, body_length: 1.280 INCHES NOMINAL IN, inclosure_type: ENCASED, style_designator: RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE, load_impedance_per_function: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED, mounting_facility_type_and_quantity: 24 TERMINAL LOCATION NOT OTHERWISE SPECIFIED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-01-154-7304, 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→ 8558737-502
NSN: 5915-01-154-7304
FSC: 5915
CAGE: 49671 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN DIV LOCKHEED MARTIN (USA)
SPECIFICATIONS
body_width0.600 INCHES NOMINAL IN
body_length1.280 INCHES NOMINAL IN
inclosure_typeENCASED
style_designatorRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
load_impedance_per_function50.0 OHMS 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
NSN5915-01-154-7304
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 8558737-502 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 24 TERMINAL LOCATION NOT OTHERWISE SPECIFIED
•
LOAD IMPEDANCE PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
STYLE DESIGNATOR: RECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 PIN GROUND THIRD FUNCTION
•
BODY LENGTH: 1.280 INCHES NOMINAL IN
•
BODY WIDTH: 0.600 INCHES NOMINAL IN
•
SOURCE IMPEDANCE RATING PER FUNCTION: 50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY TYPE AND QUANTITY24 TERMINAL LOCATION NOT OTHERWISE SPECIFIED
LOAD IMPEDANCE PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORRECTANGULAR TERMINAL/TERMINALS ON ONE SURFACE
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 PIN GROUND THIRD FUNCTION
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 PIN OUTPUT SECOND FUNCTION
BODY LENGTH1.280 INCHES NOMINAL IN
BODY WIDTH0.600 INCHES NOMINAL IN
SOURCE IMPEDANCE RATING PER FUNCTION50.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
INCLOSURE TYPEENCASED
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 PIN INPUT FIRST FUNCTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
158-5-2Interchangeable
interchangeable cross-reference
interchangeable
K1-15852-1Interchangeable
interchangeable cross-reference
interchangeable
3712-1Interchangeable
interchangeable cross-reference
interchangeable
583R669H02Interchangeable
interchangeable cross-reference
interchangeable
32087 PIECE 3Interchangeable
interchangeable cross-reference
interchangeable
N15852Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8558737-502?
8558737-502 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 8558737-502?
There are 8 known substitutes for 8558737-502: 158-5-2, K1-15852-1, 3712-1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8558737-502?
8558737-502 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-01-154-7304. 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