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Technical Data Sheet
31257 ✓ 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

CAPACITOR,FIXED,PAPER DIELECTRIC. Key specifications include material: STEEL OVERALL, ink_color: BLUE, nut_style: HEXAGON, thickness: 0.625 INCHES NOMINAL IN, unit_type: DESK OR POCKET, body_style: W/MTG BRACKET, TERMINAL(S) ON ONE END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5940-00-156-7128, 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 31257
NSN: 5940-00-156-7128
FSC: 5940
CAGE: 00779 — TE CONNECTIVITY CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
ink_colorBLUE
nut_styleHEXAGON
thickness0.625 INCHES NOMINAL IN
unit_typeDESK OR POCKET
body_styleW/MTG BRACKET, TERMINAL(S) ON ONE END
nut_height0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
body_length2.250 INCHES MAXIMUM IN
pocket_clipPROVIDED
thread_class2B
body_diameter0.993 INCHES MAXIMUM IN
overall_width0.469 INCHES IN
NSN5940-00-156-7128
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN 31257 MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
MOUNTING HOLE DIAMETER: 0.328 INCHES IN
ELECTRICAL INSULATION FEATURE: UNINSULATED
MOUNTING METHOD STYLE: RING
MOUNTING FACILITY THICKNESS: 0.033 INCHES IN
MATERIAL: COPPER OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL SINGLE LAYER
SURFACE TREATMENT: TIN OVERALL SINGLE LAYER
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)
MOUNTING HOLE DIAMETER0.328 INCHES IN
ELECTRICAL INSULATION FEATUREUNINSULATED
MOUNTING METHOD STYLERING
MOUNTING FACILITY THICKNESS0.033 INCHES IN
MATERIALCOPPER OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-T-10727 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL SINGLE LAYER
OVERALL LENGTH1.009 INCHES IN
SURFACE TREATMENTTIN OVERALL SINGLE LAYER
BASIC SHAPE STYLECRIMP
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
31257Interchangeable
interchangeable cross-reference
interchangeable
30285-1Interchangeable
interchangeable cross-reference
interchangeable
946282-2414Interchangeable
interchangeable cross-reference
interchangeable
MS35650-3254Interchangeable
interchangeable cross-reference
interchangeable
312-0057Interchangeable
interchangeable cross-reference
interchangeable
1451Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31257?
31257 is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 31257?
There are 20 known substitutes for 31257: 31257, 30285-1, 946282-2414 and 17 more. Substitute compatibility should be verified for your specific system.
Is 31257 still available?
31257 is currently cancelled.
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