PartsTable
Technical Data Sheet
PartsTable / MRO / 640-23
640-23 ✓ Verified by PartsTable
Kensington · 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,CERAMIC DIELE. Key specifications include length: 85.000 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, body_width: 1.252 INCHES NOMINAL IN, body_height: 2.938 INCHES NOMINAL IN, body_length: 1.752 INCHES NOMINAL IN, body_material: METAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-503-8679, 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→ 640-23
NSN: 5915-00-503-8679
FSC: 5915
CAGE: 56662 — FREQUENCY SELECTIVE NETWORKS, INC. DBA FREQUENCY SELECTIVE NETWORKS INC (USA)
SPECIFICATIONS
length85.000 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
body_width1.252 INCHES NOMINAL IN
body_height2.938 INCHES NOMINAL IN
body_length1.752 INCHES NOMINAL IN
body_materialMETAL
inclosure_typeENCASED
overall_height3.813 INCHES NOMINAL IN
overall_length2.502 INCHES NOMINAL IN
special_featuresPLAIN; OVERHEAD; 26 CM CIRCUMFERENCE CM
style_designatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
nominal_thread_size0.164 INCHES IN
NSN5915-00-503-8679
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Kensington CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN 640-23 MFR Kensington CAPACITOR,VARIABLE,CER
KEY FEATURES
•
SOURCE IMPEDANCE RATING PER FUNCTION: 40.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 CONNECTOR, RECEPTACLE INPUT FIRST FUNCTION
•
INCLOSURE TYPE: ENCASED
•
STYLE DESIGNATOR: RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
•
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH: 2.187 INCHES NOMINAL IN
•
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS: 10.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
•
BODY WIDTH: 1.252 INCHES NOMINAL 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)
SOURCE IMPEDANCE RATING PER FUNCTION40.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 CONNECTOR, RECEPTACLE INPUT FIRST FUNCTION
OVERALL LENGTH2.502 INCHES NOMINAL IN
INCLOSURE TYPEENCASED
STYLE DESIGNATORRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY LENGTH2.187 INCHES NOMINAL IN
INSERTION LOSS AT REFERENCE FREQUENCY PER FUNCTION IN DECIBELS10.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
BODY WIDTH1.252 INCHES NOMINAL IN
INPUT TERMINAL MANUFACTURER CODE98278
OUTPUT IMPEDANCE PER FUNCTION W/SOURCE ACROSS INPUT1.0 KILOHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
9402-3Interchangeable
interchangeable cross-reference
interchangeable
A94023Interchangeable
interchangeable cross-reference
interchangeable
658-1 1-2-35LBInterchangeable
interchangeable cross-reference
interchangeable
60HInterchangeable
interchangeable cross-reference
interchangeable
H3100Interchangeable
interchangeable cross-reference
interchangeable
H3100 (60H)Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 640-23?
640-23 is a CAPACITOR,VARIABLE,CERAMIC DIELE manufactured by Kensington. It is classified as a MRO (MRO_GENERAL).
What parts can replace 640-23?
There are 15 known substitutes for 640-23: 9402-3, A94023, 658-1 1-2-35LB and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 640-23?
640-23 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-503-8679. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026