PartsTable
Technical Data Sheet
Download PDF

AL4S — CAPACITOR,FIXED,CERAMIC DIELECTR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

AL4S: CAPACITOR,FIXED,CERAMIC DIELECTR.

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include body_style: ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT, reach_length: 0.438 INCHES NOMINAL IN, usage_design: ENGINE OTHER THAN AIRCRAFT, electrode_style: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4), pressure_rating: 235.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS, width_across_flats: 0.812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2920-00-647-3897, 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
AL4S
NSN: 2920-00-647-3897
FSC: 2920 — Engine Electrical System Components, Nonaircraft
CAGE: 57526 — FORD MOTOR COMPANY (USA)
SPECIFICATIONS
body_styleELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT
reach_length0.438 INCHES NOMINAL IN
usage_designENGINE OTHER THAN AIRCRAFT
electrode_styleSINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
pressure_rating235.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
width_across_flats0.812 INCHES NOMINAL IN
seat_major_diameter0.795 INCHES NOMINAL IN
shield_thread_length0.250 INCHES NOMINAL IN
barrel_inside_diameter0.468 INCHES NOMINAL IN
nondefinitive_spec/std_data2 TYPE AND A CLASS
dc_resistance_rating_in_ohms10000.0 NOMINAL
height_above_mounting_surface2.734 INCHES NOMINAL IN
NSN2920-00-647-3897
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,CERAMIC DIELECTR TITLE COMPONENT PN AL4S MFR CAPACITOR,FIXED,CERAMI
KEY FEATURES
•
PRESSURE RATING: 235.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
•
WIDTH ACROSS FLATS: 0.812 INCHES NOMINAL IN
•
TOP TO TERMINAL CONTACT DISTANCE: 1.000 INCHES NOMINAL IN
•
HEIGHT ABOVE MOUNTING SURFACE: 2.734 INCHES NOMINAL IN
•
USAGE DESIGN: ENGINE OTHER THAN AIRCRAFT
•
ELECTRODE STYLE: SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
•
BODY STYLE: ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT
•
DC RESISTANCE RATING IN OHMS: 10000.0 NOMINAL
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
PRESSURE RATING235.0 POUNDS PER SQUARE INCH (PSI) NOMINAL MEAN EFFECTIVE LBS
WIDTH ACROSS FLATS0.812 INCHES NOMINAL IN
TOP TO TERMINAL CONTACT DISTANCE1.000 INCHES NOMINAL IN
HEIGHT ABOVE MOUNTING SURFACE2.734 INCHES NOMINAL IN
USAGE DESIGNENGINE OTHER THAN AIRCRAFT
ELECTRODE STYLESINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
BODY STYLEELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT
DC RESISTANCE RATING IN OHMS10000.0 NOMINAL
REACH LENGTH0.438 INCHES NOMINAL IN
SEAT MAJOR DIAMETER0.795 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
WS506Reference document
Same NSN cross-reference
Reference document — Identification reference
XEH8Reference document
Same NSN cross-reference
Reference document — Secondary reference
ARL4SReference document
Same NSN cross-reference
Reference document — Secondary reference
EH8Reference 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
Ready to buy AL4S?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is AL4S?
AL4S is a CAPACITOR,FIXED,CERAMIC DIELECTR.
What parts can replace AL4S?
There are 4 known substitutes for AL4S: WS506, XEH8, ARL4S and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AL4S?
AL4S is cataloged in the U.S. Government catalog under NSN 2920-00-647-3897. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — AL4S

✓ PartsTable — the parts reference. Every fact cited to its source.
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.