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668405-5 — Technical Data Sheet

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— · 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,PAPER DIELECTRIC. Key specifications include terminal_type: CONNECTOR, RECEPTACLE, mounting_method: FLANGE, pressure_switch_type: DIFFERENTIAL, contact_adjustability: ACTUATION POINT NOT ADJUSTABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5930-00-814-4052, 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
668405-5
NSN: 5930-00-814-4052
FSC: 5930
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
terminal_typeCONNECTOR, RECEPTACLE
mounting_methodFLANGE
pressure_switch_typeDIFFERENTIAL
contact_adjustabilityACTUATION POINT NOT ADJUSTABLE
NSN5930-00-814-4052
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN 668405-5 MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
•
PRESSURE SWITCH TYPE: DIFFERENTIAL
•
TERMINAL TYPE: CONNECTOR, RECEPTACLE
•
MOUNTING METHOD: FLANGE
•
CONTACT ADJUSTABILITY: ACTUATION POINT NOT ADJUSTABLE
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
PRESSURE SWITCH TYPEDIFFERENTIAL
TERMINAL TYPECONNECTOR, RECEPTACLE
MOUNTING METHODFLANGE
CONTACT ADJUSTABILITYACTUATION POINT NOT ADJUSTABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
77-556AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
556AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
077-55600InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
8875-00InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
GG-K-391InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
90-123InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 668405-5?
668405-5 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace 668405-5?
There are 10 known substitutes for 668405-5: 77-556A, 556A, 077-55600 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 668405-5?
668405-5 is cataloged in the Federal Logistics Information System under NSN 5930-00-814-4052. 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: October 2026