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Technical Data Sheet
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CF440 — Technical Data Sheet

✓ 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,FIXED,CERAMIC DIELECTR. Key specifications include material: ASBESTOS, disk_type: PLAIN, design_type: DRY, flexibility: FLEXIBLE, spline_type: STRAIGHT, construction: SOLID. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-612-2105, 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→ CF440
NSN: 2520-00-612-2105
FSC: 2520
CAGE: 31204 — PERFECTION CLUTCH (USA)
SPECIFICATIONS
materialASBESTOS
disk_typePLAIN
design_typeDRY
flexibilityFLEXIBLE
spline_typeSTRAIGHT
constructionSOLID
disk_materialSTEEL
spline_quantity10
outside_diameter10.000 INCHES NOMINAL IN
special_featuresINTEGRAL HUB INCLUDED
features_providedFRICTION MATERIAL FACING AND MATERIAL FACING GROOVE
reliability_indicatorNOT ESTABLISHED
NSN2520-00-612-2105
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,CERAMIC DIELECTR TITLE COMPONENT PN CF440 MFR CAPACITOR,FIXED,CERAMI
KEY FEATURES
•
DISK MATERIAL: STEEL
•
SPLINE QUANTITY: 10
•
SPLINE TYPE: STRAIGHT
•
FLEXIBILITY: FLEXIBLE
•
FURNISHED ITEMS AND QUANTITY: 6 DAMPER SPRING
•
SPLINE MAJOR DIAMETER: 1.388 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS
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)
DISK MATERIALSTEEL
SPECIAL FEATURESINTEGRAL HUB INCLUDED
SPLINE QUANTITY10
SPLINE TYPESTRAIGHT
FLEXIBILITYFLEXIBLE
FURNISHED ITEMS AND QUANTITY6 DAMPER SPRING
SPLINE MAJOR DIAMETER1.388 INCHES NOMINAL IN
MATERIALASBESTOS
CONSTRUCTIONSOLID
OUTSIDE DIAMETER10.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
31647Interchangeable
interchangeable cross-reference
interchangeable
2R0647Interchangeable
interchangeable cross-reference
interchangeable
450157Interchangeable
interchangeable cross-reference
interchangeable
1000-23-3Interchangeable
interchangeable cross-reference
interchangeable
8527572Interchangeable
interchangeable cross-reference
interchangeable
A-549709Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CF440?
CF440 is a CAPACITOR,FIXED,CERAMIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace CF440?
There are 18 known substitutes for CF440: 31647, 2R0647, 450157 and 15 more. Substitute compatibility should be verified for your specific system.
Is CF440 still available?
CF440 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: August 2026