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Technical Data Sheet
PartsTable / COMPONENT / 4309
4309 ✓ Verified by PartsTable
Bestway · 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

CAPACITOR,VARIABLE,CERAMIC DIELE. Key specifications include material: RESIN SYNTHETIC, thickness: 0.031 INCHES NOMINAL IN, bore_shape: STRAIGHT, relay_type: AUXILIARY, body_length: 1.188 INCHES NOMINAL IN, power_range: +0.0 TO 100.0 MILLIWATTS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-425-8833, 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
4309
NSN: 6625-01-425-8833
FSC: 6625
CAGE: 70998 — BIRD ELECTRONIC CORPORATION DIV BIRD ELECTRONIC CORP (USA)
SPECIFICATIONS
materialRESIN SYNTHETIC
thickness0.031 INCHES NOMINAL IN
bore_shapeSTRAIGHT
relay_typeAUXILIARY
body_length1.188 INCHES NOMINAL IN
power_range+0.0 TO 100.0 MILLIWATTS
contact_typeTWIST LOCK
bore_diameter45.00 MILLIMETERS NOMINAL MM
hole_diameter0.266 INCHES NOMINAL IN
overall_depth6.000 INCHES NOMINAL IN
overall_width1.500 INCHES NOMINAL IN
physical_formPASTE
NSN6625-01-425-8833
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Bestway CAPACITOR,VARIABLE,CERAMIC DIELE TITLE COMPONENT PN 4309 MFR Bestway CAPACITOR,VARIABLE,CER
KEY FEATURES
•
POWER RANGE: +0.0 TO 100.0 MILLIWATTS
•
FREQUENCY RANGE RATING: +125.0 TO 136.0 MEGAHERTZ
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)
POWER RANGE+0.0 TO 100.0 MILLIWATTS
FREQUENCY RANGE RATING+125.0 TO 136.0 MEGAHERTZ
POWER RANGE+0.0 TO 100.0 MILLIWATTS
FREQUENCY RANGE RATING+125.0 TO 136.0 MEGAHERTZ
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
309GInterchangeable
interchangeable cross-reference
interchangeable
954137Interchangeable
interchangeable cross-reference
interchangeable
603T2Interchangeable
interchangeable cross-reference
interchangeable
4309Interchangeable
interchangeable cross-reference
interchangeable
664649Interchangeable
interchangeable cross-reference
interchangeable
W1 1-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4309?
4309 is a CAPACITOR,VARIABLE,CERAMIC DIELE manufactured by Bestway.
What parts can replace 4309?
There are 17 known substitutes for 4309: 309G, 954137, 603T2 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4309?
4309 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-425-8833. 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