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PartsTable / COMPONENT / A2521
A2521 ✓ 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 material: PLASTIC METHYL METHACRYLATE, edge_type: FLAT FINISH, body_width: 1.120 INCHES MAXIMUM IN, body_height: 0.400 INCHES MAXIMUM IN, body_length: 1.120 INCHES MAXIMUM IN, surface_finish: POLISHED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 9330-00-110-2797, 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
A2521
NSN: 9330-00-110-2797
FSC: 9330
CAGE: 96696 — CANBERRA INDUSTRIES INC. (USA)
SPECIFICATIONS
materialPLASTIC METHYL METHACRYLATE
edge_typeFLAT FINISH
body_width1.120 INCHES MAXIMUM IN
body_height0.400 INCHES MAXIMUM IN
body_length1.120 INCHES MAXIMUM IN
ply_quantity1
surface_finishPOLISHED
overall_diameter1.148 INCHES NOMINAL IN
style_designatorCIRCULAR
features_providedHERMETICALLY SEALED AND HYBRID AND POSITIVE OUTPUTS
overall_thickness1.062 INCHES NOMINAL IN
inclosure_materialPLASTIC
NSN9330-00-110-2797
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN A2521 MFR CAPACITOR,VARIABLE,AIR
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
480190Interchangeable
interchangeable cross-reference
interchangeable
A2521Interchangeable
interchangeable cross-reference
interchangeable
ES5750Interchangeable
interchangeable cross-reference
interchangeable
5750Interchangeable
interchangeable cross-reference
interchangeable
2167 ITEM 5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A2521?
A2521 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace A2521?
There are 5 known substitutes for A2521: 480190, A2521, ES5750 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A2521?
A2521 is cataloged in the Federal Logistics Information System (FLIS) under NSN 9330-00-110-2797. 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