PartsTable
Technical Data Sheet
PartsTable / MRO / CV21C300
CV21C300 ✓ 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,CERAMIC DIELE. Key specifications include body_style: ROTARY, body_width: 0.880 INCHES NOMINAL IN, body_height: 0.406 INCHES MAXIMUM IN, body_length: 1.300 INCHES NOMINAL IN, inclosure_type: ENCAPSULATED, adjustment_device_torque: 4.000 INCH-OUNCES MINIMUM AND 24.000 INCH-OUNCES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-449-3333, 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→ CV21C300
NSN: 5910-00-449-3333
FSC: 5910
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
body_styleROTARY
body_width0.880 INCHES NOMINAL IN
body_height0.406 INCHES MAXIMUM IN
body_length1.300 INCHES NOMINAL IN
inclosure_typeENCAPSULATED
adjustment_device_torque4.000 INCH-OUNCES MINIMUM AND 24.000 INCH-OUNCES MAXIMUM IN
nonderated_operating_temp-55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
terminal_type_and_quantity4 TAB, SOLDER LUG
individual_section_quantity2
capacitance_drift_in_picofarads0.50 ALL SECTIONS
capacitance_range_in_picofarads+4.0 TO 30.0 ALL SECTIONS
unthreaded_mounting_hole_diameter0.145 INCHES NOMINAL IN
NSN5910-00-449-3333
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN CV21C300 MFR CAPACITOR,VARIABLE,CER
KEY FEATURES
•
ADJUSTMENT DEVICE TORQUE: 4.000 INCH-OUNCES MINIMUM AND 24.000 INCH-OUNCES MAXIMUM IN
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.145 INCHES NOMINAL IN
•
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY: 2 SLOTTED SCREW
•
TERMINAL TYPE AND QUANTITY: 4 TAB, SOLDER LUG
•
TEST DATA DOCUMENT: 81349-MIL-C-81 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
•
CAPACITANCE DRIFT IN PICOFARADS: 0.50 ALL SECTIONS
•
CAPACITANCE RANGE IN PICOFARADS: +4.0 TO 30.0 ALL SECTIONS
•
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH: 0.625 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)
ADJUSTMENT DEVICE TORQUE4.000 INCH-OUNCES MINIMUM AND 24.000 INCH-OUNCES MAXIMUM IN
UNTHREADED MOUNTING HOLE DIAMETER0.145 INCHES NOMINAL IN
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY2 SLOTTED SCREW
TERMINAL TYPE AND QUANTITY4 TAB, SOLDER LUG
TEST DATA DOCUMENT81349-MIL-C-81 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
CAPACITANCE DRIFT IN PICOFARADS0.50 ALL SECTIONS
CAPACITANCE RANGE IN PICOFARADS+4.0 TO 30.0 ALL SECTIONS
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH0.625 INCHES NOMINAL IN
INSULATION DC RESISTANCE AT 25 DEG CELSIUS10.0 GIGOHMS
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED HOLE(S)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
519-001A4-5-20Interchangeable
interchangeable cross-reference
interchangeable
CV21A200Interchangeable
interchangeable cross-reference
interchangeable
17A198Interchangeable
interchangeable cross-reference
interchangeable
CV21A070Interchangeable
interchangeable cross-reference
interchangeable
617151PC1Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-81/3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CV21C300?
CV21C300 is a CAPACITOR,VARIABLE,CERAMIC DIELE. It is classified as a MRO (MRO_GENERAL).
What parts can replace CV21C300?
There are 15 known substitutes for CV21C300: 519-001A4-5-20, CV21A200, 17A198 and 12 more. Substitute compatibility should be verified for your specific system.
Is CV21C300 still available?
CV21C300 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