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Technical Data Sheet
PartsTable / COMPONENT / 20-808540-3
20-808540-3 ✓ Verified by PartsTable
— · COMPONENT
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 material: ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE, flange_depth: 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN, flange_style: COVER TYPE SINGLE FLANGE, adapter_height: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN, adapter_length: 1.188 INCHES MINIMUM AND 1.218 INCHES MAXIMUM IN, special_features: FREQUENCY RANGE 8.20 TO 12.4 GHZ GHz. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-241-9010, 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
20-808540-3
NSN: 5985-00-241-9010
FSC: 5985
CAGE: 07397 — GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS INC. DBA GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE
flange_depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN
flange_styleCOVER TYPE SINGLE FLANGE
adapter_height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM IN
adapter_length1.188 INCHES MINIMUM AND 1.218 INCHES MAXIMUM IN
flange_quantity1
special_featuresFREQUENCY RANGE 8.20 TO 12.4 GHZ GHz
style_designatorWAVEGUIDE TO COAXIAL
flange_inside_width1.003 INCHES MINIMUM SINGLE FLANGE IN
connector_end_designFEMALE
flange_inside_height0.503 INCHES MINIMUM SINGLE FLANGE IN
flange_outside_width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
NSN5985-00-241-9010
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN 20-808540-3 MFR CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
WAVEGUIDE OUTSIDE HEIGHT: 0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
•
FLANGE OUTSIDE WIDTH: 1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
•
MATERIAL: ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE
•
WAVEGUIDE OUTSIDE WIDTH: 0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
•
WAVEGUIDE INSIDE WIDTH: 0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
•
VOLTAGE STANDING WAVE RATIO: 1.25
•
CONNECTOR END DESIGN: FEMALE
•
ADAPTER LENGTH: 1.188 INCHES MINIMUM AND 1.218 INCHES MAXIMUM IN
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)
WAVEGUIDE OUTSIDE HEIGHT0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
FLANGE OUTSIDE WIDTH1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SINGLE FLANGE IN
MATERIALALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE
WAVEGUIDE OUTSIDE WIDTH0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
WAVEGUIDE INSIDE WIDTH0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
VOLTAGE STANDING WAVE RATIO1.25
CONNECTOR END DESIGNFEMALE
ADAPTER LENGTH1.188 INCHES MINIMUM AND 1.218 INCHES MAXIMUM IN
TUBING WALL CONSTRUCTION STYLESEAMLESS SINGLE TUBING SEGMENT
STYLE DESIGNATORWAVEGUIDE TO COAXIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
T487A1011Interchangeable
interchangeable cross-reference
interchangeable
601AInterchangeable
interchangeable cross-reference
interchangeable
T4057A-1015Interchangeable
interchangeable cross-reference
interchangeable
B5157Interchangeable
interchangeable cross-reference
interchangeable
201979Interchangeable
interchangeable cross-reference
interchangeable
67AX46Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-808540-3?
20-808540-3 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace 20-808540-3?
There are 17 known substitutes for 20-808540-3: T487A1011, 601A, T4057A-1015 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-808540-3?
20-808540-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-241-9010. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026