PartsTable
Technical Data Sheet
PartsTable / MRO / BS56
BS56 ✓ 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/MTG TABS/FLANGES, TERMINAL(S) ON ONE SURFACE, body_width: 1.250 INCHES NOMINAL IN, body_height: 1.125 INCHES NOMINAL IN, body_length: 1.750 INCHES NOMINAL IN, terminal_length: 0.438 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 5910-00-191-1018, 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→ BS56
NSN: 5910-00-191-1018
FSC: 5910
CAGE: 37942 — YOSEMITE INVESTMENT INC DBA NORTH AMERICAN CAPACITOR CO (USA)
SPECIFICATIONS
anode_typePLAIN FOIL
body_styleW/MTG TABS/FLANGES, TERMINAL(S) ON ONE SURFACE
body_width1.250 INCHES NOMINAL IN
body_height1.125 INCHES NOMINAL IN
body_length1.750 INCHES NOMINAL IN
terminal_length0.438 INCHES NOMINAL IN
features_providedHERMETICALLY SEALED CASE
reliability_indicatorNOT ESTABLISHED
electrical_polarizationPOLARIZED
nonderated_operating_temp-20.0 CELSIUS MINIMUM AND 65.0 CELSIUS MAXIMUM DEGC
terminal_type_and_quantity2 TAB, SOLDER LUG
tolerance_range_per_section-10.00 TO 75.00 PERCENT SINGLE SECTION
NSN5910-00-191-1018
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN BS56 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
•
TERMINAL TYPE AND QUANTITY: 2 TAB, SOLDER LUG
•
CAPACITANCE VALUE PER SECTION: 24.000 MICROFARADS SINGLE SECTION
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.188 INCHES NOMINAL IN
•
CAPACITIVE ELECTRODE MATERIAL: ALUMINUM
•
BODY HEIGHT: 1.125 INCHES NOMINAL IN
•
TOLERANCE RANGE PER SECTION: -10.00 TO 75.00 PERCENT SINGLE SECTION
•
BODY WIDTH: 1.250 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)
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
TERMINAL TYPE AND QUANTITY2 TAB, SOLDER LUG
CAPACITANCE VALUE PER SECTION24.000 MICROFARADS SINGLE SECTION
UNTHREADED MOUNTING HOLE DIAMETER0.188 INCHES NOMINAL IN
CAPACITIVE ELECTRODE MATERIALALUMINUM
BODY HEIGHT1.125 INCHES NOMINAL IN
TOLERANCE RANGE PER SECTION-10.00 TO 75.00 PERCENT SINGLE SECTION
BODY WIDTH1.250 INCHES NOMINAL IN
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED MOUNTING HOLES
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH2.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
127706Interchangeable
interchangeable cross-reference
interchangeable
H323772PC18Interchangeable
interchangeable cross-reference
interchangeable
H321597Interchangeable
interchangeable cross-reference
interchangeable
235PHSPTDInterchangeable
interchangeable cross-reference
interchangeable
612940Interchangeable
interchangeable cross-reference
interchangeable
3050025171Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS56?
BS56 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace BS56?
There are 17 known substitutes for BS56: 127706, H323772PC18, H321597 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BS56?
BS56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-191-1018. 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.
PartsTable Design LLC · partstable.com
Last verified: July 2026