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Technical Data Sheet
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31-5009-21 — Technical Data Sheet

✓ 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 overall_width: 0.312 INCHES NOMINAL IN, actuator_style: ROUND, overall_length: 0.819 INCHES NOMINAL IN, actuator_height: 0.325 INCHES NOMINAL IN, mounting_method: PANEL, actuator_diameter: 0.110 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5930-01-590-2937, 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→ 31-5009-21
NSN: 5930-01-590-2937
FSC: 5930
CAGE: 41364 — VIAVI SOLUTIONS LLC DIV LENEXA (USA)
SPECIFICATIONS
overall_width0.312 INCHES NOMINAL IN
actuator_styleROUND
overall_length0.819 INCHES NOMINAL IN
actuator_height0.325 INCHES NOMINAL IN
mounting_methodPANEL
actuator_diameter0.110 INCHES NOMINAL IN
switch_actuator_quantity1
actuator_free_position_height0.200 INCHES NOMINAL IN
nonpile-up_contact_arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, DOUBLE BREAK, MOMENTARY ACTION SINGLE SWITCH UNIT
part_name_assigned_by_controlling_agency(INAVY)BUTT CONTACT PUSHBUTTON SWITCH
NSN5930-01-590-2937
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN 31-5009-21 MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
•
ACTUATOR HEIGHT: 0.325 INCHES NOMINAL IN
•
ACTUATOR FREE POSITION HEIGHT: 0.200 INCHES NOMINAL IN
•
MOUNTING METHOD: PANEL
•
NONPILE-UP CONTACT ARRANGEMENT: 1 POLE, SINGLE THROW, NORMALLY CLOSED, DOUBLE BREAK, MOMENTARY ACTION SINGLE SWITCH UNIT
•
ACTUATOR STYLE: ROUND
•
SWITCH ACTUATOR QUANTITY: 1
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
ACTUATOR HEIGHT0.325 INCHES NOMINAL IN
ACTUATOR FREE POSITION HEIGHT0.200 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCY(INAVY)BUTT CONTACT PUSHBUTTON SWITCH
MOUNTING METHODPANEL
NONPILE-UP CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY CLOSED, DOUBLE BREAK, MOMENTARY ACTION SINGLE SWITCH UNIT
ACTUATOR STYLEROUND
SWITCH ACTUATOR QUANTITY1
OVERALL LENGTH0.819 INCHES NOMINAL IN
OVERALL WIDTH0.312 INCHES NOMINAL IN
ACTUATOR DIAMETER0.110 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
42001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1626840P1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1626840InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
WD40-1GALLONInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6515NCM021946InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
02-2602InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31-5009-21?
31-5009-21 is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 31-5009-21?
There are 8 known substitutes for 31-5009-21: 42001, 1626840P1, 1626840 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31-5009-21?
31-5009-21 is cataloged in the Federal Logistics Information System under NSN 5930-01-590-2937. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026