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Technical Data Sheet
PartsTable / COMPONENT / MIL-P-43940
MIL-P-43940 ✓ 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

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 cover: NOT PROVIDED, depth: 4.125 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, load_capacity: 15.0 QUARTS MAXIMUM, special_features: FULL SIZE PAN W/PERFORATION, nondefinitive_spec/std_data: I STYLE AND 3 SIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7310-00-147-2769, 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
MIL-P-43940
NSN: 7310-00-147-2769
FSC: 7310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
coverNOT PROVIDED
depth4.125 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
load_capacity15.0 QUARTS MAXIMUM
special_featuresFULL SIZE PAN W/PERFORATION
nondefinitive_spec/std_dataI STYLE AND 3 SIZE
steam_table_opening_width_for_which_designed11.875 INCHES NOMINAL IN
steam_table_opening_length_for_which_designed19.875 INCHES NOMINAL IN
NSN7310-00-147-2769
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN MIL-P-43940 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
MATERIAL: STEEL CORROSION RESISTING
•
LOAD CAPACITY: 9.5 QUARTS MAXIMUM
•
STEAM TABLE OPENING WIDTH FOR WHICH DESIGNED: 11.875 INCHES NOMINAL IN
•
NONDEFINITIVE SPEC/STD DATA: I STYLE AND 10 SIZE
•
COVER: NOT PROVIDED
•
DEPTH: 6.000 INCHES NOMINAL IN
•
STEAM TABLE OPENING LENGTH FOR WHICH DESIGNED: 19.875 INCHES NOMINAL 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)
MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURESHALF SIZE LONG PAN
LOAD CAPACITY9.5 QUARTS MAXIMUM
STEAM TABLE OPENING WIDTH FOR WHICH DESIGNED11.875 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAI STYLE AND 10 SIZE
COVERNOT PROVIDED
DEPTH6.000 INCHES NOMINAL IN
STEAM TABLE OPENING LENGTH FOR WHICH DESIGNED19.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
21642-36Interchangeable
interchangeable cross-reference
interchangeable
1926Interchangeable
interchangeable cross-reference
interchangeable
652762Interchangeable
interchangeable cross-reference
interchangeable
5310PL0145204Interchangeable
interchangeable cross-reference
interchangeable
2300042Interchangeable
interchangeable cross-reference
interchangeable
453299Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-P-43940?
MIL-P-43940 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace MIL-P-43940?
There are 22 known substitutes for MIL-P-43940: 21642-36, 1926, 652762 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-P-43940?
MIL-P-43940 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7310-00-147-2769. 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