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Technical Data Sheet
PartsTable / MRO / 91556
91556 ✓ 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 material: ALUMINUM, point_type: CONVENTIONAL, point_angle: 118.0 DEGREES NOMINAL, shank_style: FLAT ROUND, flute_length: 3.125 INCHES NOMINAL IN, overall_width: 10.500 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 5815-00-126-7633, 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→ 91556
NSN: 5815-00-126-7633
FSC: 5815
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialALUMINUM
point_typeCONVENTIONAL
point_angle118.0 DEGREES NOMINAL
shank_styleFLAT ROUND
flute_length3.125 INCHES NOMINAL IN
overall_width10.500 INCHES NOMINAL IN
flute_quantity2
overall_height7.700 INCHES NOMINAL IN
overall_length12.500 INCHES NOMINAL IN
shank_diameter0.500 INCHES NOMINAL IN
special_featuresLED LIGHT; BUILT-IN DUST COLLECTION FILTRATION SYSTEM; 50% HIGHER FLOW FAN; DISPOSABLE WINDOWS; 120 OR 220 VAC VAC
cutting_end_styleGENERAL PURPOSE
NSN5815-00-126-7633
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN 91556 MFR CAPACITOR,FIXED,ELECTR
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
55456Interchangeable
interchangeable cross-reference
interchangeable
1424 7/8Interchangeable
interchangeable cross-reference
interchangeable
2AL942Interchangeable
interchangeable cross-reference
interchangeable
2719-91556Interchangeable
interchangeable cross-reference
interchangeable
91556Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91556?
91556 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 91556?
There are 5 known substitutes for 91556: 55456, 1424 7/8, 2AL942 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91556?
91556 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5815-00-126-7633. 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