PartsTable
Technical Data Sheet
PartsTable / MRO / 3-1-2-12
3-1-2-12 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 CAPACITOR,FIXED,ELECTROLYTIC 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 length: 10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT, material: ALUMINUM ALLOY 2024, body_style: STRAIGHT SHAPE, INTERNAL COUPLING, shaft_type: ROUND, FLATTED SINGLE ACTUATOR, shell_type: ARMORED, flat_height: 0.219 INCHES NOMINAL SINGLE ACTUATOR IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-00-149-4055, 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→ 3-1-2-12
NSN: 5935-00-149-4055
FSC: 5935
CAGE: 74868 — AMPHENOL CORPORATION DIV AMPHENOL RF (USA)
SPECIFICATIONS
length10.000 FEET MINIMUM AND 12.000 FEET MAXIMUM FT
materialALUMINUM ALLOY 2024
body_styleSTRAIGHT SHAPE, INTERNAL COUPLING
shaft_typeROUND, FLATTED SINGLE ACTUATOR
shell_typeARMORED
flat_height0.219 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length1.125 INCHES NOMINAL SINGLE ACTUATOR IN
overall_width1.000 INCHES NOMINAL IN
pole_quantity1 SINGLE SECTION FRONT
terminal_typeTAB, SOLDER LUG
heat_treatmentT-4 SOLUTION HEAT TREATED
mounting_stylePLAIN W/MOUNTING HOLE
NSN5935-00-149-4055
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN 3-1-2-12 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
CONNECTOR CABLE STRAIN RELIEF METHOD: CABLE CLAMP
•
SHELL MATERIAL: COPPER ALLOY
•
CONTACT SURFACE TREATMENT: GOLD SINGLE MATING END SINGLE CONTACT GROUPING
•
TERMINAL TYPE: TAB, SOLDER LUG SINGLE MATING END SINGLE CONTACT GROUPING
•
INCLUDED CONTACT TYPE: COAXIAL PIN SINGLE MATING END SINGLE CONTACT GROUPING
•
INSERT MATERIAL: PLASTIC SINGLE MATING END
•
NONDEFINITIVE SPEC/STD DATA: 2 CLASS AND A CATEGORY AND -39012/16-0002 PART
•
RADIO FREQUENCY TYPE CONTACT CHARACTERISTIC IMPEDANCE IN OHMS: 50.0 SINGLE MATING END SINGLE CONTACT GROUPING
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)
CONNECTOR CABLE STRAIN RELIEF METHODCABLE CLAMP
SHELL MATERIALCOPPER ALLOY
CONTACT SURFACE TREATMENTGOLD SINGLE MATING END SINGLE CONTACT GROUPING
TERMINAL TYPETAB, SOLDER LUG SINGLE MATING END SINGLE CONTACT GROUPING
INCLUDED CONTACT TYPECOAXIAL PIN SINGLE MATING END SINGLE CONTACT GROUPING
INSERT MATERIALPLASTIC SINGLE MATING END
NONDEFINITIVE SPEC/STD DATA2 CLASS AND A CATEGORY AND -39012/16-0002 PART
RADIO FREQUENCY TYPE CONTACT CHARACTERISTIC IMPEDANCE IN OHMS50.0 SINGLE MATING END SINGLE CONTACT GROUPING
INCLUDED CONTACT QUANTITY1 SINGLE MATING END SINGLE CONTACT GROUPING
CONTACT POSITION ARRANGEMENT STYLEBNC SINGLE MATING END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
131B1800BInterchangeable
interchangeable cross-reference
interchangeable
MIL-C-39012-16Interchangeable
interchangeable cross-reference
interchangeable
M39012/16-0011Interchangeable
interchangeable cross-reference
interchangeable
31012Interchangeable
interchangeable cross-reference
interchangeable
31012-1Interchangeable
interchangeable cross-reference
interchangeable
KC-59-416Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-1-2-12?
3-1-2-12 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 3-1-2-12?
There are 28 known substitutes for 3-1-2-12: 131B1800B, MIL-C-39012-16, M39012/16-0011 and 25 more. Substitute compatibility should be verified for your specific system.
Is 3-1-2-12 still available?
3-1-2-12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026