PartsTable
Technical Data Sheet
PartsTable / MRO / 643684
643684 ✓ 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 fragility_factor: MODERATELY RUGGED, frequency_in_hertz: 400.0 NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5920-00-170-4236, 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→ 643684
NSN: 5920-00-170-4236
FSC: 5920
CAGE: 89536 — FLUKE CORP (USA)
SPECIFICATIONS
fragility_factorMODERATELY RUGGED
frequency_in_hertz400.0 NOMINAL
NSN5920-00-170-4236
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 643684 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 18
643684Interchangeable
interchangeable cross-reference
interchangeable
ATM20Interchangeable
interchangeable cross-reference
interchangeable
FFP20-000Interchangeable
interchangeable cross-reference
interchangeable
875FU0123Interchangeable
interchangeable cross-reference
interchangeable
F60C500V20AInterchangeable
interchangeable cross-reference
interchangeable
MCL20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 643684?
643684 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 643684?
There are 18 known substitutes for 643684: 643684, ATM20, FFP20-000 and 15 more. Substitute compatibility should be verified for your specific system.
Is 643684 still available?
643684 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: July 2026