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12K3 — Technical Data Sheet

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— · 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,MICA DIELECTRIC. Key specifications include material: STEEL, plate_type: NEGATIVE AND POSITIVE, terminal_type: BUTTON, overall_height: 0.048 INCHES NOMINAL IN, inside_diameter: 0.615 INCHES NOMINAL IN, case_design_type: SEALED. This part is cataloged in the Federal Logistics Information System under NSN 6140-00-431-6805, 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
12K3
NSN: 6140-00-431-6805
FSC: 6140
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
materialSTEEL
plate_typeNEGATIVE AND POSITIVE
cell_quantity1
terminal_typeBUTTON
overall_height0.048 INCHES NOMINAL IN
inside_diameter0.615 INCHES NOMINAL IN
case_design_typeSEALED
outside_diameter1.281 INCHES NOMINAL IN
overall_diameter1.034 INCHES NOMINAL IN
style_designatorPLAIN
voltage_in_volts1.5
terminal_locationTOP
NSN6140-00-431-6805
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN 12K3 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
TERMINAL LOCATION: TOP
•
OVERALL DIAMETER: 1.034 INCHES NOMINAL IN
•
PLATE TYPE: NEGATIVE AND POSITIVE
•
AMPERE HOUR CAPACITY: 1.90
•
TIME CAPACITY IN HOURS: 5.00
•
CASE DESIGN TYPE: SEALED
•
TERMINAL TYPE: BUTTON
•
CELL QUANTITY: 1
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
TERMINAL LOCATIONTOP
OVERALL DIAMETER1.034 INCHES NOMINAL IN
PLATE TYPENEGATIVE AND POSITIVE
AMPERE HOUR CAPACITY1.90
TIME CAPACITY IN HOURS5.00
CASE DESIGN TYPESEALED
TERMINAL TYPEBUTTON
CELL QUANTITY1
OVERALL HEIGHT1.959 INCHES NOMINAL IN
VOLTAGE IN VOLTS1.5
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
2500Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
C2500Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
25D50InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
23124InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
R190InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
342526InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12K3?
12K3 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace 12K3?
There are 28 known substitutes for 12K3: 2500, C2500, 25D50 and 25 more. Substitute compatibility should be verified for your specific system.
Is 12K3 still available?
12K3 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: September 2026