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189-508-5 — CAPACITOR,VARIABLE,AIR DIELECTRI

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

189-508-5: CAPACITOR,VARIABLE,AIR DIELECTRI.

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: SILVER CAPACITIVE ELECTRODE, body_style: PLATE-MESHING, overall_width: 0.421 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN, plate_air_gap: 0.010 INCHES IN, inclosure_type: UNINCLOSED, overall_height: 0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5910-00-247-8598, 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→ 189-508-5
NSN: 5910-00-247-8598
FSC: 5910 — Capacitors
CAGE: 71313 — VIKING TECHNOLOGIES, LTD. (USA)
SPECIFICATIONS
materialSILVER CAPACITIVE ELECTRODE
body_stylePLATE-MESHING
overall_width0.421 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN
plate_air_gap0.010 INCHES IN
inclosure_typeUNINCLOSED
overall_height0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN
overall_length0.735 INCHES MINIMUM AND 0.797 INCHES MAXIMUM IN
plate_quantity18
terminal_length0.125 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
fragility_factorMODERATELY RUGGED
precious_materialSILVER
terminal_thickness0.016 INCHES NOMINAL IN
NSN5910-00-247-8598
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 189-508-5 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
PLATE AIR GAP: 0.010 INCHES IN
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 TERMINAL
•
NONDERATED VOLTAGE RATING AND TYPE: 500.0 AC PEAK SINGLE SECTION
•
INCLOSURE TYPE: UNINCLOSED
•
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS: 45.0 SINGLE SECTION
•
FRAGILITY FACTOR: MODERATELY RUGGED
•
CAPACITANCE DRIFT IN PICOFARADS: 0.04 SINGLE SECTION
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
PLATE AIR GAP0.010 INCHES IN
MOUNTING FACILITY TYPE AND QUANTITY2 TERMINAL
OVERALL HEIGHT0.441 INCHES MINIMUM AND 0.465 INCHES MAXIMUM IN
NONDERATED VOLTAGE RATING AND TYPE500.0 AC PEAK SINGLE SECTION
INCLOSURE TYPEUNINCLOSED
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS45.0 SINGLE SECTION
FRAGILITY FACTORMODERATELY RUGGED
CAPACITANCE DRIFT IN PICOFARADS0.04 SINGLE SECTION
BODY STYLEPLATE-MESHING
ADJUSTMENT DEVICE ROTATION180.0 DEGREES NOMINAL CLOCKWISE AND 180.0 DEGREES NOMINAL COUNTERCLOCKWISE
SUBSTITUTES & CROSS-REFERENCES 5
10-1108-25021-902Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
189-0508-028Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
0121-0116Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
489-8-5Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
10-1108-25021-90Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 189-508-5?
189-508-5 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 189-508-5?
There are 5 known substitutes for 189-508-5: 10-1108-25021-902, 189-0508-028, 0121-0116 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 189-508-5?
189-508-5 is cataloged in the U.S. Government catalog under NSN 5910-00-247-8598. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.