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Technical Data Sheet
PartsTable / MRO / JMC4803
JMC4803 ✓ 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: 0.690 INCHES NOMINAL IN, thread_class: 2A A, bushing_shape: ROUND, bushing_length: 0.230 INCHES NOMINAL IN, inclosure_type: ENCASED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-410-9354, 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→ JMC4803
NSN: 5910-00-410-9354
FSC: 5910
CAGE: 91293 — KNOWLES CAZENOVIA, INC. DIV JOHANSON MANUFACTURING (USA)
SPECIFICATIONS
body_stylePISTON
body_length0.690 INCHES NOMINAL IN
thread_class2A A
bushing_shapeROUND
bushing_length0.230 INCHES NOMINAL IN
inclosure_typeENCASED
overall_length1.030 INCHES NOMINAL IN
terminal_length0.110 INCHES NOMINAL IN
bushing_diameter0.234 INCHES NOMINAL IN
overall_diameter0.280 INCHES NOMINAL IN
terminal_diameter0.090 INCHES NOMINAL IN
nominal_thread_size0.234 INCHES IN
NSN5910-00-410-9354
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN JMC4803 MFR CAPACITOR,VARIABLE,CER
KEY FEATURES
•
OVERALL DIAMETER: 0.280 INCHES NOMINAL IN
•
NONDERATED VOLTAGE RATING AND TYPE: 250.0 DC CONTINUOUS SINGLE SECTION
•
TERMINAL DIAMETER: 0.090 INCHES NOMINAL IN
•
NONDERATED OPERATING TEMP: -65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
•
BUSHING SHAPE: ROUND
•
CAPACITANCE RANGE IN PICOFARADS: +1.0 TO 30.0 SINGLE SECTION
•
NOMINAL THREAD SIZE: 0.234 INCHES IN
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNS
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)
OVERALL DIAMETER0.280 INCHES NOMINAL IN
NONDERATED VOLTAGE RATING AND TYPE250.0 DC CONTINUOUS SINGLE SECTION
TERMINAL DIAMETER0.090 INCHES NOMINAL IN
NONDERATED OPERATING TEMP-65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
BUSHING SHAPEROUND
CAPACITANCE RANGE IN PICOFARADS+1.0 TO 30.0 SINGLE SECTION
NOMINAL THREAD SIZE0.234 INCHES IN
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNS
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING
TERMINAL TYPE AND QUANTITY1 TURRET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
5602Interchangeable
interchangeable cross-reference
interchangeable
A-52424-2Interchangeable
interchangeable cross-reference
interchangeable
302394-901Interchangeable
interchangeable cross-reference
interchangeable
MS51062-1Interchangeable
interchangeable cross-reference
interchangeable
22-6230Interchangeable
interchangeable cross-reference
interchangeable
8F1761Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JMC4803?
JMC4803 is a CAPACITOR,VARIABLE,CERAMIC DIELE. It is classified as a MRO (MRO_GENERAL).
What parts can replace JMC4803?
There are 13 known substitutes for JMC4803: 5602, A-52424-2, 302394-901 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for JMC4803?
JMC4803 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-410-9354. 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.
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Last verified: July 2026