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Technical Data Sheet
PartsTable / CONTROLLER / 40100012
40100012 ✓ Verified by PartsTable
— · CONTROLLER · RAID_BBU
WHAT YOU NEED TO KNOW
RAID battery backup units should be purchased new only. Always ship with test reports confirming status. Key checks: Ship with test reports.
Firmware must match server
PRODUCT OVERVIEW

The the manufacturer 40100012 is a Flash-Backed Write Cache capacitor pack, designed for enterprise RAID controllers in enterprise servers. It provides backup power to the FBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. This is a high-volume replacement part in TPM market as enterprise servers remain widely deployed.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-623-5400, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
CONTROLLER→ RAID_BBU→ 40100012
NSN: 5998-01-623-5400
FSC: 5998 — CIRCUIT CARD ASSEMBLY
CAGE: U0JW2 — BAE MISSION SYSTEMS (GBR)
SPECIFICATIONS
Part Number40100012
Capacity512MB
NSN5998-01-623-5400
COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN 40100012 MFR OEM HP 512MB FBWC FOR P SERIES SMART ARRAY
KEY FEATURES
•
Flash-Backed Write Cache Capacitor
•
Rechargeable Battery Technology
Provides cache backup power for 48+ hours after power loss
•
Hot-Plug Capable
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 1
661069-B21Interchangeable
HP 512MB FBWC for P Series Smart Array
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40100012?
40100012 is a HP 512MB FBWC FOR P SERIES SMART ARRAY. It is classified as a CONTROLLER (RAID_BBU).
What parts can replace 40100012?
There is 1 known substitute for 40100012: 661069-B21. Substitute compatibility should be verified for your specific system.
What is the NSN for 40100012?
40100012 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-623-5400. 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