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Technical Data Sheet
PartsTable / MRO / CP54B1EF503K
CP54B1EF503K ✓ 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,FIXED,PAPER DIELECTRIC. Key specifications include body_style: W/MTG TABS/FLANGES, TERMINAL(S) ON ONE SURFACE, body_width: 1.000 INCHES NOMINAL IN, body_height: 0.750 INCHES NOMINAL IN, body_length: 1.812 INCHES NOMINAL IN, features_provided: MOUNTING HARDWARE, reliability_indicator: NOT ESTABLISHED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-107-3987, 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→ CP54B1EF503K
NSN: 5910-00-107-3987
FSC: 5910
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
body_styleW/MTG TABS/FLANGES, TERMINAL(S) ON ONE SURFACE
body_width1.000 INCHES NOMINAL IN
body_height0.750 INCHES NOMINAL IN
body_length1.812 INCHES NOMINAL IN
features_providedMOUNTING HARDWARE
reliability_indicatorNOT ESTABLISHED
terminal_type_and_quantity2 TAB, SOLDER LUG
schematic_diagram_designatorNO COMMON OR GROUNDED ELECTRODE(S)
unthreaded_mounting_hole_diameter0.187 INCHES NOMINAL IN
nonderated_continuous_voltage_rating_and_type_per_section600.0 DC SINGLE SECTION
distance_between_centerlines_of_mounting_facilities_parallel_to_body_length2.125 INCHES NOMINAL IN
NSN5910-00-107-3987
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN CP54B1EF503K MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
•
TERMINAL TYPE AND QUANTITY: 2 TAB, SOLDER LUG
•
BODY WIDTH: 1.000 INCHES NOMINAL IN
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
FEATURES PROVIDED: MOUNTING HARDWARE
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.187 INCHES NOMINAL IN
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
•
BODY HEIGHT: 0.750 INCHES NOMINAL IN
•
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION: 600.0 DC SINGLE SECTION
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)
TERMINAL TYPE AND QUANTITY2 TAB, SOLDER LUG
BODY WIDTH1.000 INCHES NOMINAL IN
RELIABILITY INDICATORNOT ESTABLISHED
FEATURES PROVIDEDMOUNTING HARDWARE
UNTHREADED MOUNTING HOLE DIAMETER0.187 INCHES NOMINAL IN
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
BODY HEIGHT0.750 INCHES NOMINAL IN
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION600.0 DC SINGLE SECTION
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH2.125 INCHES NOMINAL IN
BODY STYLEW/MTG TABS/FLANGES, TERMINAL(S) ON ONE SURFACE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
CP54B1FF503KInterchangeable
Same NIIN cross-reference
interchangeable
CP54B1EF503K1Interchangeable
Same NIIN cross-reference
interchangeable
JANC25Interchangeable
Same NIIN cross-reference
interchangeable
MILC25Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CP54B1EF503K?
CP54B1EF503K is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace CP54B1EF503K?
There are 4 known substitutes for CP54B1EF503K: CP54B1FF503K, CP54B1EF503K1, JANC25 and 1 more. Substitute compatibility should be verified for your specific system.
Is CP54B1EF503K still available?
CP54B1EF503K 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