PartsTable
Technical Data Sheet
4643B ✓ 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: PISTON, body_length: 0.281 INCHES NOMINAL IN, thread_class: 2A A, bushing_shape: ROUND, bushing_length: 0.141 INCHES NOMINAL IN, inclosure_type: ENCASED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-013-9592, 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 4643B
NSN: 5910-00-013-9592
FSC: 5910
CAGE: 91293 — KNOWLES CAZENOVIA, INC. DIV JOHANSON MANUFACTURING (USA)
SPECIFICATIONS
body_stylePISTON
body_length0.281 INCHES NOMINAL IN
thread_class2A A
bushing_shapeROUND
bushing_length0.141 INCHES NOMINAL IN
inclosure_typeENCASED
overall_length0.609 INCHES NOMINAL IN
terminal_length0.125 INCHES NOMINAL IN
bushing_diameter0.190 INCHES NOMINAL IN
overall_diameter0.220 INCHES NOMINAL IN
precious_materialGOLD AND SILVER
nominal_thread_size0.190 INCHES IN
NSN5910-00-013-9592
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 4643B MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
THREAD CLASS: 2A A
INSULATION DC RESISTANCE AT 25 DEG CELSIUS: 1000.0 GIGOHMS
TOLERANCE OF TEMP COEFFICIENT IN PPM PER DEG CELSIUS: -15.0 TO 15.0 SINGLE SECTION
THREAD QUANTITY PER INCH: 64
TUNING CHARACTERISTIC: STRAIGHT LINE CAPACITY SINGLE SECTION
CAPACITANCE RANGE IN PICOFARADS: +0.6 TO 6.0 SINGLE SECTION
MOUNTING FACILITY TYPE AND QUANTITY: 1 THREADED BUSHING
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)
THREAD CLASS2A A
OVERALL LENGTH0.609 INCHES NOMINAL IN
INSULATION DC RESISTANCE AT 25 DEG CELSIUS1000.0 GIGOHMS
TOLERANCE OF TEMP COEFFICIENT IN PPM PER DEG CELSIUS-15.0 TO 15.0 SINGLE SECTION
THREAD QUANTITY PER INCH64
TUNING CHARACTERISTICSTRAIGHT LINE CAPACITY SINGLE SECTION
CAPACITANCE RANGE IN PICOFARADS+0.6 TO 6.0 SINGLE SECTION
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS0.0 SINGLE SECTION
PRECIOUS MATERIAL AND LOCATIONALL METAL SURFACES GOLD AND ALL METAL SURFACES SILVER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
5703Interchangeable
interchangeable cross-reference
interchangeable
2028Interchangeable
interchangeable cross-reference
interchangeable
V5703Interchangeable
interchangeable cross-reference
interchangeable
8109351Interchangeable
interchangeable cross-reference
interchangeable
MILE1BInterchangeable
interchangeable cross-reference
interchangeable
R145WInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4643B?
4643B is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4643B?
There are 16 known substitutes for 4643B: 5703, 2028, V5703 and 13 more. Substitute compatibility should be verified for your specific system.
Is 4643B still available?
4643B is currently cancelled.
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