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PartsTable / MRO / MILC3965-21
MILC3965-21 ✓ 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

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include anode_type: SOLID, body_style: W/O MTG FACILITIES, TERMINAL(S) ON ONE SURFACE, body_width: 0.690 INCHES NOMINAL IN, body_height: 1.062 INCHES NOMINAL IN, body_length: 1.275 INCHES NOMINAL IN, terminal_length: 0.281 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 5910-00-004-6249, 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→ MILC3965-21
NSN: 5910-00-004-6249
FSC: 5910
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
anode_typeSOLID
body_styleW/O MTG FACILITIES, TERMINAL(S) ON ONE SURFACE
body_width0.690 INCHES NOMINAL IN
body_height1.062 INCHES NOMINAL IN
body_length1.275 INCHES NOMINAL IN
terminal_length0.281 INCHES NOMINAL IN
features_providedHERMETICALLY SEALED CASE
reliability_indicatorNOT ESTABLISHED
electrical_polarizationPOLARIZED
nonderated_operating_temp-55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
terminal_surface_treatmentSOLDER
terminal_type_and_quantity2 TAB, SOLDER LUG
NSN5910-00-004-6249
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN MILC3965-21 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION: 100.0 DC SINGLE SECTION
•
ANODE TYPE: SOLID
•
TOLERANCE RANGE PER SECTION: -20.00 TO 20.00 PERCENT SINGLE SECTION
•
DC LEAKAGE AT MAXIMUM OPERATING TEMP: 68.0 MILLIAMPERES
•
BODY WIDTH: 0.690 INCHES NOMINAL IN
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
NONDERATED OPERATING TEMP: -55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
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)
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION100.0 DC SINGLE SECTION
ANODE TYPESOLID
TOLERANCE RANGE PER SECTION-20.00 TO 20.00 PERCENT SINGLE SECTION
DC LEAKAGE AT MAXIMUM OPERATING TEMP68.0 MILLIAMPERES
BODY WIDTH0.690 INCHES NOMINAL IN
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
FEATURES PROVIDEDHERMETICALLY SEALED CASE
NONDERATED OPERATING TEMP-55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
TERMINAL LENGTH0.281 INCHES NOMINAL IN
BODY HEIGHT1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
MIL-DTL-3965/21Interchangeable
Same NIIN cross-reference
interchangeable
CL55BN171MPGInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILC3965-21?
MILC3965-21 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace MILC3965-21?
There are 2 known substitutes for MILC3965-21: MIL-DTL-3965/21, CL55BN171MPG. Substitute compatibility should be verified for your specific system.
What is the NSN for MILC3965-21?
MILC3965-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-004-6249. 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