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PartsTable / COMPONENT / 657701
657701 ✓ 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,FIXED,MICA DIELECTRIC. Key specifications include material: RUBBER OVERALL, body_length: 0.480 INCHES MAXIMUM IN, hole_diameter: 0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, outside_diameter: 11.000 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 7.000 INCHES NOMINAL 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 5950-01-421-4120, 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
657701
NSN: 5950-01-421-4120
FSC: 5950
CAGE: 72149 — ELECTRONIC TRANSFORMER CORP DIV ELECTRONIC TRANSFORMER CORPORATION (USA)
SPECIFICATIONS
materialRUBBER OVERALL
body_length0.480 INCHES MAXIMUM IN
hole_diameter0.500 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
outside_diameter11.000 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter7.000 INCHES NOMINAL IN
bolt_hole_quantity8
bolt_circle_diameter9.000 INCHES NOMINAL IN
cross-sectional_thickness0.130 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationASTM D1056, TY2, CL C, GR 1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5950-01-421-4120
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN 657701 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
BODY LENGTH: 0.480 INCHES MAXIMUM IN
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)
BODY LENGTH0.480 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
CM20B221KInterchangeable
interchangeable cross-reference
interchangeable
CM15FD221GO3Interchangeable
interchangeable cross-reference
interchangeable
600-3/4Interchangeable
interchangeable cross-reference
interchangeable
600-1-3/4Interchangeable
interchangeable cross-reference
interchangeable
600 134Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 657701?
657701 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace 657701?
There are 5 known substitutes for 657701: CM20B221K, CM15FD221GO3, 600-3/4 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 657701?
657701 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-421-4120. 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