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Technical Data Sheet
PartsTable / MRO / 221-53
221-53 ✓ 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,PAPER DIELECTRIC. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED BOTH ENDS, body_width: 2.000 INCHES NOMINAL IN, body_height: 2.000 INCHES NOMINAL IN, body_length: 2.750 INCHES NOMINAL IN, body_diameter: 0.618 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-445-1950, 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→ 221-53
NSN: 6625-00-445-1950
FSC: 6625
CAGE: 10412 — WHITTAKER CORP WHITTAKER ELECTRONIC SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED BOTH ENDS
body_width2.000 INCHES NOMINAL IN
body_height2.000 INCHES NOMINAL IN
body_length2.750 INCHES NOMINAL IN
body_diameter0.618 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
coil_quantity6
terminal_typeWIRE LEAD
inclosure_typeHERMETICALLY SEALED
overall_length2.77 INCHES NOMINAL IN
inside_diameter0.384 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
NSN6625-00-445-1950
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN 221-53 MFR CAPACITOR,FIXED,PAPER
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 10
16A138Interchangeable
interchangeable cross-reference
interchangeable
17100-0Interchangeable
interchangeable cross-reference
interchangeable
22153Interchangeable
interchangeable cross-reference
interchangeable
61019Interchangeable
interchangeable cross-reference
interchangeable
119931Interchangeable
interchangeable cross-reference
interchangeable
SPL154ITEM3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 221-53?
221-53 is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 221-53?
There are 10 known substitutes for 221-53: 16A138, 17100-0, 22153 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221-53?
221-53 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-445-1950. 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