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43419 ✓ 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 body_width: 1.812 INCHES NOMINAL IN, body_height: 3.125 INCHES NOMINAL IN, body_length: 2.125 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, mounting_method: THREADED STUD(S) SINGLE GROUP, frequency_rating: 380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5995-00-122-1665, 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
43419
NSN: 5995-00-122-1665
FSC: 5995
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
body_width1.812 INCHES NOMINAL IN
body_height3.125 INCHES NOMINAL IN
body_length2.125 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
fsc_application_dataENGINE,ELECTRICAL SYSTEM COMPONENTS,ACFT
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
NSN5995-00-122-1665
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN 43419 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
FSC APPLICATION DATA: ENGINE,ELECTRICAL SYSTEM COMPONENTS,ACFT
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)
FSC APPLICATION DATAENGINE,ELECTRICAL SYSTEM COMPONENTS,ACFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
43419Interchangeable
interchangeable cross-reference
interchangeable
669948Interchangeable
interchangeable cross-reference
interchangeable
W-1990Interchangeable
interchangeable cross-reference
interchangeable
634592Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 43419?
43419 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace 43419?
There are 4 known substitutes for 43419: 43419, 669948, W-1990 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 43419?
43419 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5995-00-122-1665. 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