PartsTable
Technical Data Sheet
BS91 ✓ 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: 1.750 INCHES NOMINAL IN, body_height: 1.000 INCHES NOMINAL IN, body_length: 2.000 INCHES NOMINAL IN, reliability_indicator: NOT ESTABLISHED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-665-0312, 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 BS91
NSN: 5910-00-665-0312
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_width1.750 INCHES NOMINAL IN
body_height1.000 INCHES NOMINAL IN
body_length2.000 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
electrical_polarizationPOLARIZED
nonderated_operating_temp-40.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
terminal_type_and_quantity2 TAB, SOLDER LUG
schematic_diagram_designatorNO COMMON OR GROUNDED ELECTRODE(S)
capacitance_value_per_section8.000 MICROFARADS SINGLE SECTION
unthreaded_mounting_hole_diameter0.188 INCHES NOMINAL IN
NSN5910-00-665-0312
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN BS91 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
BODY LENGTH: 2.000 INCHES NOMINAL IN
BODY HEIGHT: 1.000 INCHES NOMINAL IN
ELECTRICAL POLARIZATION: POLARIZED
NONDERATED OPERATING TEMP: -40.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION: 600.0 DC SINGLE SECTION
SCHEMATIC DIAGRAM DESIGNATOR: NO COMMON OR GROUNDED ELECTRODE(S)
TERMINAL TYPE AND QUANTITY: 2 TAB, SOLDER LUG
ANODE TYPE: PLAIN FOIL
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 LENGTH2.000 INCHES NOMINAL IN
BODY HEIGHT1.000 INCHES NOMINAL IN
ELECTRICAL POLARIZATIONPOLARIZED
NONDERATED OPERATING TEMP-40.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
NONDERATED CONTINUOUS VOLTAGE RATING AND TYPE PER SECTION600.0 DC SINGLE SECTION
SCHEMATIC DIAGRAM DESIGNATORNO COMMON OR GROUNDED ELECTRODE(S)
TERMINAL TYPE AND QUANTITY2 TAB, SOLDER LUG
ANODE TYPEPLAIN FOIL
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED MOUNTING HOLES
CAPACITANCE VALUE PER SECTION8.000 MICROFARADS SINGLE SECTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
B591Interchangeable
interchangeable cross-reference
interchangeable
B285Interchangeable
interchangeable cross-reference
interchangeable
79C0031-02Interchangeable
interchangeable cross-reference
interchangeable
506-0001F-Q70Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS91?
BS91 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace BS91?
There are 4 known substitutes for BS91: B591, B285, 79C0031-02 and 1 more. Substitute compatibility should be verified for your specific system.
Is BS91 still available?
BS91 is currently cancelled.
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