PartsTable
Technical Data Sheet
PartsTable / MRO / ER25AD
ER25AD ✓ 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,VARIABLE,AIR DIELECTRI. Key specifications include body_style: PLATE-MESHING, shaft_type: ROUND SINGLE SHAFT, body_length: 2.180 INCHES NOMINAL IN, shaft_length: 0.625 INCHES NOMINAL SINGLE SHAFT IN, thread_class: 2A A, bushing_shape: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-254-5380, 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→ ER25AD
NSN: 5910-00-254-5380
FSC: 5910
CAGE: 71313 — VIKING TECHNOLOGIES, LTD. (USA)
SPECIFICATIONS
body_stylePLATE-MESHING
shaft_typeROUND SINGLE SHAFT
body_length2.180 INCHES NOMINAL IN
shaft_length0.625 INCHES NOMINAL SINGLE SHAFT IN
thread_class2A A
bushing_shapeROUND
overall_width1.410 INCHES NOMINAL IN
bushing_length0.390 INCHES NOMINAL IN
inclosure_typeUNINCLOSED
overall_height1.406 INCHES NOMINAL IN
overall_length3.710 INCHES MAXIMUM IN
shaft_diameter0.250 INCHES NOMINAL SINGLE SHAFT IN
NSN5910-00-254-5380
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN ER25AD MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
BODY LENGTH: 2.180 INCHES NOMINAL IN
•
SHAFT DIAMETER: 0.250 INCHES NOMINAL SINGLE SHAFT IN
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
NONDERATED VOLTAGE RATING AND TYPE: 1300.0 AC PEAK ALL SECTIONS
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
INDIVIDUAL SECTION QUANTITY: 2
•
BUSHING LENGTH: 0.390 INCHES NOMINAL IN
•
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY: 2 SHAFT
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)
BODY LENGTH2.180 INCHES NOMINAL IN
SHAFT DIAMETER0.250 INCHES NOMINAL SINGLE SHAFT IN
NOMINAL THREAD SIZE0.164 INCHES IN
NONDERATED VOLTAGE RATING AND TYPE1300.0 AC PEAK ALL SECTIONS
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
INDIVIDUAL SECTION QUANTITY2
BUSHING LENGTH0.390 INCHES NOMINAL IN
ADJUSTMENT DEVICE DRIVE TYPE AND QUANTITY2 SHAFT
BUSHING SHAPEROUND
TUNING CHARACTERISTICSTRAIGHT LINE CAPACITY ALL SECTIONS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
MS35489-4Interchangeable
interchangeable cross-reference
interchangeable
1892Interchangeable
interchangeable cross-reference
interchangeable
944.87.31.002Interchangeable
interchangeable cross-reference
interchangeable
407Interchangeable
interchangeable cross-reference
interchangeable
11371Interchangeable
interchangeable cross-reference
interchangeable
R18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ER25AD?
ER25AD is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace ER25AD?
There are 19 known substitutes for ER25AD: MS35489-4, 1892, 944.87.31.002 and 16 more. Substitute compatibility should be verified for your specific system.
Is ER25AD still available?
ER25AD 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