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Technical Data Sheet
PartsTable / MRO / 640290
640290 ✓ 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: 1.435 INCHES NOMINAL IN, body_height: 1.562 INCHES NOMINAL IN, body_length: 1.435 INCHES NOMINAL IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE PRIMARY, inclosure_type: FULLY INCLOSED, mounting_method: THREADED HOLE(S) SINGLE GROUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5855-00-471-5989, 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→ 640290
NSN: 5855-00-471-5989
FSC: 5855
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
body_width1.435 INCHES NOMINAL IN
body_height1.562 INCHES NOMINAL IN
body_length1.435 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE PRIMARY
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating85.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
inductance_rating850.00 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE PRIMARY
nominal_thread_size0.099 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch48 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5855-00-471-5989
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 640290 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 1
5852Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640290?
640290 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 640290?
There is 1 known substitute for 640290: 5852. Substitute compatibility should be verified for your specific system.
What is the NSN for 640290?
640290 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5855-00-471-5989. 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