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Technical Data Sheet
PartsTable / MRO / PC21J1R2
PC21J1R2 ✓ 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: PISTON, body_length: 0.096 INCHES NOMINAL IN, inclosure_type: ENCASED, overall_length: 0.240 INCHES MAXIMUM IN, terminal_length: 0.100 INCHES NOMINAL IN, overall_diameter: 0.094 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-01-323-6921, 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→ PC21J1R2
NSN: 5910-01-323-6921
FSC: 5910
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
body_stylePISTON
body_length0.096 INCHES NOMINAL IN
inclosure_typeENCASED
overall_length0.240 INCHES MAXIMUM IN
terminal_length0.100 INCHES NOMINAL IN
overall_diameter0.094 INCHES NOMINAL IN
terminal_thickness0.008 INCHES NOMINAL IN
adjustment_device_torque0.100 INCH-OUNCES MINIMUM AND 1.000 INCH-OUNCES MAXIMUM IN
nonderated_operating_temp-55.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
terminal_type_and_quantity2 PRINTED CIRCUIT
specification/standard_data81349-MIL-C-14409/16 GOVERNMENT SPECIFICATION
capacitance_range_in_picofarads+0.3 TO 1.2 SINGLE SECTION
NSN5910-01-323-6921
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN PC21J1R2 MFR CAPACITOR,VARIABLE,CER
KEY FEATURES
•
BODY STYLE: PISTON
•
BODY LENGTH: 0.096 INCHES NOMINAL IN
•
TERMINAL LENGTH: 0.100 INCHES NOMINAL IN
•
INSULATION DC RESISTANCE AT MAX OPERATING TEMP: 100000.0 MEGOHMS
•
INSULATION DC RESISTANCE AT 25 DEG CELSIUS: 1000000.0 MEGOHMS
•
TERMINAL THICKNESS: 0.008 INCHES NOMINAL IN
•
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS: 0.0 SINGLE SECTION
•
SPECIFICATION/STANDARD DATA: 81349-MIL-C-14409/16 GOVERNMENT SPECIFICATION
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)
BODY STYLEPISTON
BODY LENGTH0.096 INCHES NOMINAL IN
TERMINAL LENGTH0.100 INCHES NOMINAL IN
INSULATION DC RESISTANCE AT MAX OPERATING TEMP100000.0 MEGOHMS
INSULATION DC RESISTANCE AT 25 DEG CELSIUS1000000.0 MEGOHMS
TERMINAL THICKNESS0.008 INCHES NOMINAL IN
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS0.0 SINGLE SECTION
SPECIFICATION/STANDARD DATA81349-MIL-C-14409/16 GOVERNMENT SPECIFICATION
TEST DATA DOCUMENT81349-MIL-C-14409 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.).
ADJUSTMENT DEVICE TORQUE0.100 INCH-OUNCES MINIMUM AND 1.000 INCH-OUNCES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
PC24J2R5Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-14409/16Interchangeable
interchangeable cross-reference
interchangeable
922-0666-140Interchangeable
interchangeable cross-reference
interchangeable
27273Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-14409/16Interchangeable
interchangeable cross-reference
interchangeable
1505901-27273Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PC21J1R2?
PC21J1R2 is a CAPACITOR,VARIABLE,CERAMIC DIELE. It is classified as a MRO (MRO_GENERAL).
What parts can replace PC21J1R2?
There are 18 known substitutes for PC21J1R2: PC24J2R5, MIL-PRF-14409/16, 922-0666-140 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PC21J1R2?
PC21J1R2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-01-323-6921. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026