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Technical Data Sheet
PartsTable / COMPONENT / WY20
WY20 ✓ 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,MICA DIELECTR. Key specifications include color: GRAY/GREY, shape: CYLINDRICAL, width: 34.000 INCHES NOMINAL IN, length: 72.000 INCHES NOMINAL IN, end_type: NULLIPAROUS AND PAROUS, material: STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-00-341-4064, 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
WY20
NSN: 2990-00-341-4064
FSC: 2990
CAGE: 76110 — MAREMONT CORP (USA)
SPECIFICATIONS
colorGRAY/GREY
shapeCYLINDRICAL
width34.000 INCHES NOMINAL IN
length72.000 INCHES NOMINAL IN
end_typeNULLIPAROUS AND PAROUS
materialSTEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
ink_colorBLACK
unit_typePOCKET
body_colorBLACK
body_styleBUSHING MOUNTED
gear_ratio20.25 TO 1
body_length0.215 INCHES NOMINAL IN
NSN2990-00-341-4064
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,MICA DIELECTR TITLE COMPONENT PN WY20 MFR CAPACITOR,VARIABLE,MIC
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 19
4253050-1Interchangeable
interchangeable cross-reference
interchangeable
BT368Interchangeable
interchangeable cross-reference
interchangeable
705785Interchangeable
interchangeable cross-reference
interchangeable
463Interchangeable
interchangeable cross-reference
interchangeable
NA51699PC3Interchangeable
interchangeable cross-reference
interchangeable
462Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is WY20?
WY20 is a CAPACITOR,VARIABLE,MICA DIELECTR.
What parts can replace WY20?
There are 19 known substitutes for WY20: 4253050-1, BT368, 705785 and 16 more. Substitute compatibility should be verified for your specific system.
Is WY20 still available?
WY20 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