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Technical Data Sheet
PartsTable / MRO / A2863
A2863 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include material: PLASTIC CASE, body_style: W/O MTG FACILITIES TERMINAL(S) ON ONE SURFACE, body_width: 3.000 INCHES NOMINAL IN, body_height: 1.500 INCHES NOMINAL IN, body_length: 6.000 INCHES NOMINAL IN, body_material: METAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-591-9937, 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→ A2863
NSN: 3120-00-591-9937
FSC: 3120
CAGE: 71366 — BUNTING BEARINGS CORP (USA)
SPECIFICATIONS
materialPLASTIC CASE
body_styleW/O MTG FACILITIES TERMINAL(S) ON ONE SURFACE
body_width3.000 INCHES NOMINAL IN
body_height1.500 INCHES NOMINAL IN
body_length6.000 INCHES NOMINAL IN
body_materialMETAL
inclosure_typeHERMETICALLY SEALED
overall_length7.000 INCHES NOMINAL IN
terminal_length1.000 INCHES MINIMUM IN
style_designatorRECTANGULAR TERMINAL/TERMINALS ON TWO SURFACES
maximum_temp_rise35.0 CELSIUS DEGC
precious_materialGOLD
NSN3120-00-591-9937
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A2863 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
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 7
332834-5Interchangeable
interchangeable cross-reference
interchangeable
3260H-993-202Interchangeable
interchangeable cross-reference
interchangeable
A1222Interchangeable
interchangeable cross-reference
interchangeable
DM15ED330J0Interchangeable
interchangeable cross-reference
interchangeable
42000127-330Interchangeable
interchangeable cross-reference
interchangeable
971328-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A2863?
A2863 is a CAPACITOR,FIXED,MICA DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace A2863?
There are 7 known substitutes for A2863: 332834-5, 3260H-993-202, A1222 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A2863?
A2863 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-591-9937. 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