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PartsTable / COMPONENT / 521-0017-00
521-0017-00 ✓ 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

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include body_style: CIRCULAR, terminal_design: NONFEEDTHRU, board_construction: COMPRESSION SEAL CONSTRUCTION, terminal_pattern_arrangement: SINGLE ROW CIRCULAR, nonfeedthru_terminal_quantity: 3 SINGLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-01-066-8656, 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
521-0017-00
NSN: 5940-01-066-8656
FSC: 5940
CAGE: 14569 — COPELAND CORP (USA)
SPECIFICATIONS
body_styleCIRCULAR
terminal_designNONFEEDTHRU
board_constructionCOMPRESSION SEAL CONSTRUCTION
terminal_pattern_arrangementSINGLE ROW CIRCULAR
nonfeedthru_terminal_quantity3 SINGLE
NSN5940-01-066-8656
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 521-0017-00 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
NONFEEDTHRU TERMINAL QUANTITY: 3 SINGLE
•
BODY STYLE: CIRCULAR
•
BOARD CONSTRUCTION: COMPRESSION SEAL CONSTRUCTION
•
TERMINAL DESIGN: NONFEEDTHRU
•
TERMINAL PATTERN ARRANGEMENT: SINGLE ROW CIRCULAR
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)
NONFEEDTHRU TERMINAL QUANTITY3 SINGLE
BODY STYLECIRCULAR
BOARD CONSTRUCTIONCOMPRESSION SEAL CONSTRUCTION
TERMINAL DESIGNNONFEEDTHRU
TERMINAL PATTERN ARRANGEMENTSINGLE ROW CIRCULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
921-0017-00Interchangeable
interchangeable cross-reference
interchangeable
A9579Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 521-0017-00?
521-0017-00 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace 521-0017-00?
There are 2 known substitutes for 521-0017-00: 921-0017-00, A9579. Substitute compatibility should be verified for your specific system.
What is the NSN for 521-0017-00?
521-0017-00 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-01-066-8656. 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