PartsTable
Technical Data Sheet
PartsTable / MRO / 0121-0138
0121-0138 ✓ 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,VARIABLE,AIR DIELECTRI. Key specifications include material: ALUMINUM ALLOY OVERALL, special_features: THIS ITEM IS A FLIGHT SAFETY CRITICAL AIRCRAFT PART (FSCAP)., features_provided: SUBMERSIBLE, surface_treatment: ANODIZE OVERALL, accommodation_type: KNURLED END GRIPPING, retaining_device_type: CHAIN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-702-7291, 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→ 0121-0138
NSN: 5910-00-702-7291
FSC: 5910
CAGE: 1LQK8 — KEYSIGHT TECHNOLOGIES, INC. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
special_featuresTHIS ITEM IS A FLIGHT SAFETY CRITICAL AIRCRAFT PART (FSCAP).
features_providedSUBMERSIBLE
surface_treatmentANODIZE OVERALL
accommodation_typeKNURLED END GRIPPING
retaining_device_typeCHAIN
pressure_relief_methodMANUAL
maximum_working_pressure50.000 POUNDS PER SQUARE INCH (PSI) LBS
system_for_which_designedPRESSURIZED
criticality_code_justificationFEAT
part_name_assigned_by_controlling_agencyCAP,FILTER OPENING
NSN5910-00-702-7291
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 0121-0138 MFR CAPACITOR,VARIABLE,AIR
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
87500-1Interchangeable
interchangeable cross-reference
interchangeable
4073607Interchangeable
interchangeable cross-reference
interchangeable
81-2238Interchangeable
interchangeable cross-reference
interchangeable
878938Interchangeable
interchangeable cross-reference
interchangeable
SA258SQInterchangeable
interchangeable cross-reference
interchangeable
10-1108-25006-902Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0121-0138?
0121-0138 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 0121-0138?
There are 10 known substitutes for 0121-0138: 87500-1, 4073607, 81-2238 and 7 more. Substitute compatibility should be verified for your specific system.
Is 0121-0138 still available?
0121-0138 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026