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Technical Data Sheet
PartsTable / COMPONENT / B15-178
B15-178 ✓ Verified by PartsTable
— · COMPONENT
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

CAPACITOR,FIXED,METALLIZED,PAPER. Key specifications include end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, overall_width: 2.750 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 3.375 INCHES NOMINAL IN, overall_length: 3.219 INCHES NOMINAL IN, inside_diameter: 0.578 INCHES MINIMUM 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 5360-00-237-2115, 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
B15-178
NSN: 5360-00-237-2115
FSC: 5360
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
overall_width2.750 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height3.375 INCHES NOMINAL IN
overall_length3.219 INCHES NOMINAL IN
inside_diameter0.578 INCHES MINIMUM IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
style_designatorCYLINDRICAL
spring_free_length3.734 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES SINGLE GROUP IN
spring_solid_length1.000 INCHES NOMINAL IN
NSN5360-00-237-2115
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,METALLIZED,PAPER TITLE COMPONENT PN B15-178 MFR CAPACITOR,FIXED,METALL
KEY FEATURES
•
INSIDE DIAMETER: 0.578 INCHES MINIMUM IN
•
STYLE DESIGNATOR: CYLINDRICAL
•
SPRING FREE OUTSIDE DIAMETER: 0.703 INCHES MAXIMUM IN
•
SPRING DEFLECTION RATE: 3.500 POUNDS PER INCH NOMINAL LBS
•
SPRING SOLID LENGTH: 1.000 INCHES NOMINAL IN
•
SPRING FREE LENGTH: 3.734 INCHES NOMINAL IN
•
END STYLE: SPRING END,SQUARED AND GROUND BOTH ENDS
•
COIL HELIX DIRECTION: RIGHT-HAND
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)
INSIDE DIAMETER0.578 INCHES MINIMUM IN
STYLE DESIGNATORCYLINDRICAL
SPRING FREE OUTSIDE DIAMETER0.703 INCHES MAXIMUM IN
SPRING DEFLECTION RATE3.500 POUNDS PER INCH NOMINAL LBS
SPRING SOLID LENGTH1.000 INCHES NOMINAL IN
SPRING FREE LENGTH3.734 INCHES NOMINAL IN
END STYLESPRING END,SQUARED AND GROUND BOTH ENDS
COIL HELIX DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
15-178Interchangeable
interchangeable cross-reference
interchangeable
ST28680Interchangeable
interchangeable cross-reference
interchangeable
D2-106Interchangeable
interchangeable cross-reference
interchangeable
B15-178Interchangeable
interchangeable cross-reference
interchangeable
9978370Interchangeable
interchangeable cross-reference
interchangeable
96G16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B15-178?
B15-178 is a CAPACITOR,FIXED,METALLIZED,PAPER.
What parts can replace B15-178?
There are 7 known substitutes for B15-178: 15-178, ST28680, D2-106 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B15-178?
B15-178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5360-00-237-2115. 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