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Technical Data Sheet
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CBS-90-021 — Technical Data Sheet

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— · 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: PLAIN FOIL, body_style: W/O MTG FACILITIES, TERMINAL(S) ON ONE END, body_length: 3.750 INCHES NOMINAL IN, body_diameter: 2.562 INCHES NOMINAL IN, features_provided: HERMETICALLY SEALED CASE, terminal_diameter: 0.190 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 5910-00-919-7689, 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→ CBS-90-021
NSN: 5910-00-919-7689
FSC: 5910
CAGE: 80103 — VEECO INSTRUMENTS INC LAMBDA DIV (USA)
SPECIFICATIONS
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, TERMINAL(S) ON ONE END
body_length3.750 INCHES NOMINAL IN
body_diameter2.562 INCHES NOMINAL IN
features_providedHERMETICALLY SEALED CASE
terminal_diameter0.190 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
electrical_polarizationPOLARIZED
case_insulation_materialPLASTIC
nonderated_operating_temp-20.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
terminal_height_from_body0.312 INCHES NOMINAL IN
terminal_type_and_quantity2 THREADED HOLE
NSN5910-00-919-7689
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN CBS-90-021 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
NONDERATED OPERATING TEMP: -20.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
•
TOLERANCE RANGE PER SECTION: -10.00 TO 100.00 PERCENT SINGLE SECTION
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
•
CASE INSULATION MATERIAL: PLASTIC
•
EQUIVALENT SERIES RESISTANCE AT REFERENCE TEMP IN OHMS: 0.06
•
CAPACITIVE ELECTRODE MATERIAL: ALUMINUM
•
TERMINAL TYPE AND QUANTITY: 2 THREADED HOLE
•
BODY LENGTH: 3.750 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
NONDERATED OPERATING TEMP-20.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
TOLERANCE RANGE PER SECTION-10.00 TO 100.00 PERCENT SINGLE SECTION
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
CASE INSULATION MATERIALPLASTIC
EQUIVALENT SERIES RESISTANCE AT REFERENCE TEMP IN OHMS0.06
CAPACITIVE ELECTRODE MATERIALALUMINUM
TERMINAL TYPE AND QUANTITY2 THREADED HOLE
BODY LENGTH3.750 INCHES NOMINAL IN
RELIABILITY INDICATORNOT ESTABLISHED
BODY DIAMETER2.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
CBS-12-048InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
32DInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
32D122H250CC2CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
QE71InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
QE71-24-2444-4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
24-2444-4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CBS-90-021?
CBS-90-021 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace CBS-90-021?
There are 21 known substitutes for CBS-90-021: CBS-12-048, 32D, 32D122H250CC2C and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CBS-90-021?
CBS-90-021 is cataloged in the Federal Logistics Information System under NSN 5910-00-919-7689. This indicates validated use in U.S. government and defense supply chains.
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Last verified: October 2026