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Technical Data Sheet
D391 ✓ 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

The BATTERY,NONRECHARGEABLE 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 shape: CYLINDRICAL, current_type: DC, usage_design: HIGH DRAIN DIGITAL WATCHES, terminal_type: FLAT SURFACE BOTTOM, overall_height: 0.081 INCHES NOMINAL IN, voltage_rating: 12.0 VOLTS NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6680-00-934-8015, 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
D391
NSN: 6680-00-934-8015
FSC: 6680
CAGE: 57733 — STEWART-WARNER CORPORATION (USA)
SPECIFICATIONS
shapeCYLINDRICAL
current_typeDC
usage_designHIGH DRAIN DIGITAL WATCHES
terminal_typeFLAT SURFACE BOTTOM
overall_height0.081 INCHES NOMINAL IN
voltage_rating12.0 VOLTS NOMINAL
mounting_methodHOLE
actuation_methodFLOAT
float_arm_length14.438 INCHES NOMINAL IN
overall_diameter0.455 INCHES NOMINAL IN
special_featuresTYPE NEDA 1160SO
voltage_in_volts1.5
NSN6680-00-934-8015
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BATTERY,NONRECHARGEABLE TITLE COMPONENT PN D391 MFR BATTERY,NONRECHARGEABL
KEY FEATURES
CURRENT TYPE: DC
ELECTRICAL CONNECTION QUANTITY: 1
MOUNTING METHOD: HOLE
ACTUATION METHOD: FLOAT
TERMINAL TYPE: SCREW
FLOAT ARM LENGTH: 14.438 INCHES NOMINAL IN
VOLTAGE RATING: 12.0 VOLTS NOMINAL
ATTACHMENT FEATURE QUANTITY: 5
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)
CURRENT TYPEDC
ELECTRICAL CONNECTION QUANTITY1
MOUNTING METHODHOLE
ACTUATION METHODFLOAT
TERMINAL TYPESCREW
FLOAT ARM LENGTH14.438 INCHES NOMINAL IN
VOLTAGE RATING12.0 VOLTS NOMINAL
ATTACHMENT FEATURE QUANTITY5
TERMINAL QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
2100-07-0009Interchangeable
interchangeable cross-reference
interchangeable
27-843Interchangeable
interchangeable cross-reference
interchangeable
MS90537-43Interchangeable
interchangeable cross-reference
interchangeable
SSD330Interchangeable
interchangeable cross-reference
interchangeable
LAP37Interchangeable
interchangeable cross-reference
interchangeable
391Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D391?
D391 is a BATTERY,NONRECHARGEABLE.
What parts can replace D391?
There are 10 known substitutes for D391: 2100-07-0009, 27-843, MS90537-43 and 7 more. Substitute compatibility should be verified for your specific system.
Is D391 still available?
D391 is currently cancelled.
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