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Technical Data Sheet
PartsTable / MRO / 26-859-4
26-859-4 ✓ 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

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: 2.688 INCHES NOMINAL IN, body_diameter: 1.000 INCHES NOMINAL IN, terminal_length: 0.500 INCHES NOMINAL IN, reliability_indicator: NOT ESTABLISHED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-079-5907, 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→ 26-859-4
NSN: 5910-00-079-5907
FSC: 5910
CAGE: 04845 — AUTOMATIC SWITCH COMPANY DBA ASCO (USA)
SPECIFICATIONS
anode_typePLAIN FOIL
body_styleW/O MTG FACILITIES, TERMINAL(S) ON ONE END
body_length2.688 INCHES NOMINAL IN
body_diameter1.000 INCHES NOMINAL IN
terminal_length0.500 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
electrical_polarizationPOLARIZED
nonderated_operating_temp0.0 CELSIUS MINIMUM AND 50.0 CELSIUS MAXIMUM DEGC
terminal_surface_treatmentSOLDER
terminal_type_and_quantity2 TAB, SOLDER LUG
tolerance_range_per_section-0.00 TO 50.00 MICROFARADS SINGLE SECTION
schematic_diagram_designatorNO COMMON OR GROUNDED ELECTRODE(S)
NSN5910-00-079-5907
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN 26-859-4 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
ANODE TYPE: PLAIN FOIL
•
NONDERATED OPERATING TEMP: 0.0 CELSIUS MINIMUM AND 50.0 CELSIUS MAXIMUM DEGC
•
BODY DIAMETER: 1.000 INCHES NOMINAL IN
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
•
CAPACITANCE VALUE PER SECTION: 70.000 MICROFARADS SINGLE SECTION
•
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION: 300.0 DC SINGLE SECTION
•
CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO DIAMETER: 0.438 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)
RELIABILITY INDICATORNOT ESTABLISHED
ANODE TYPEPLAIN FOIL
NONDERATED OPERATING TEMP0.0 CELSIUS MINIMUM AND 50.0 CELSIUS MAXIMUM DEGC
BODY DIAMETER1.000 INCHES NOMINAL IN
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
CAPACITANCE VALUE PER SECTION70.000 MICROFARADS SINGLE SECTION
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION300.0 DC SINGLE SECTION
CENTER TO CENTER DISTANCE BETWEEN TERMINALS PARALLEL TO DIAMETER0.438 INCHES NOMINAL IN
TOLERANCE RANGE PER SECTION-0.00 TO 50.00 MICROFARADS SINGLE SECTION
BODY LENGTH2.688 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
268594Interchangeable
interchangeable cross-reference
interchangeable
C0517803Interchangeable
interchangeable cross-reference
interchangeable
112RSInterchangeable
interchangeable cross-reference
interchangeable
3255393-124Interchangeable
interchangeable cross-reference
interchangeable
725000-642Interchangeable
interchangeable cross-reference
interchangeable
MC10515BEBSInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 26-859-4?
26-859-4 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 26-859-4?
There are 18 known substitutes for 26-859-4: 268594, C0517803, 112RS and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 26-859-4?
26-859-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-079-5907. 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