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Technical Data Sheet
PartsTable / MRO / 55C146
55C146 ✓ 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,FIXED,CERAMIC DIELECTR. Key specifications include material: PLASTIC CASE, body_style: W/O MTG FACILITIES, RADIAL TERMINALS, body_width: 1.890 INCHES MAXIMUM IN, body_height: 2.440 INCHES NOMINAL IN, body_length: 0.156 INCHES MAXIMUM IN, body_diameter: 0.420 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-646-3085, 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→ 55C146
NSN: 5950-00-646-3085
FSC: 5950
CAGE: 26916 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP DIV MULTIPLE (USA)
SPECIFICATIONS
materialPLASTIC CASE
body_styleW/O MTG FACILITIES, RADIAL TERMINALS
body_width1.890 INCHES MAXIMUM IN
body_height2.440 INCHES NOMINAL IN
body_length0.156 INCHES MAXIMUM IN
body_diameter0.420 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
terminal_length1.250 INCHES MINIMUM IN
frequency_rating300.0 HERTZ MINIMUM AND 3.5 KILOHERTZ MAXIMUM SINGLE COMPONENT
terminal_diameter0.025 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
NSN5950-00-646-3085
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,CERAMIC DIELECTR TITLE COMPONENT PN 55C146 MFR CAPACITOR,FIXED,CERAMI
KEY FEATURES
•
IMPEDANCE RATING IN OHMS: 150.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
•
PRIMARY TO SECONDARY TURN RATIO: 1 TO 9 OVER-ALL SINGLE COMPONENT
•
MOUNTING HOLE DIAMETER: 0.190 INCHES NOMINAL SINGLE GROUP IN
•
BODY WIDTH: 1.890 INCHES MAXIMUM IN
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 2.120 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
BODY LENGTH: 2.438 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)
IMPEDANCE RATING IN OHMS150.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
PRIMARY TO SECONDARY TURN RATIO1 TO 9 OVER-ALL SINGLE COMPONENT
MOUNTING HOLE DIAMETER0.190 INCHES NOMINAL SINGLE GROUP IN
BODY WIDTH1.890 INCHES MAXIMUM IN
INCLOSURE TYPEHERMETICALLY SEALED
DISTANCE BETWEEN MOUNTING FACILITY CENTERS2.120 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
IMPEDANCE RATING IN OHMS50.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
BODY LENGTH2.438 INCHES NOMINAL IN
BODY HEIGHT2.440 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1628-5Interchangeable
interchangeable cross-reference
interchangeable
RR-G-691Interchangeable
interchangeable cross-reference
interchangeable
RR-G-691 TY1STASZ9Interchangeable
interchangeable cross-reference
interchangeable
5120-00-238-4436Interchangeable
interchangeable cross-reference
interchangeable
1321-0610Interchangeable
interchangeable cross-reference
interchangeable
MS15718-29Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 55C146?
55C146 is a CAPACITOR,FIXED,CERAMIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 55C146?
There are 19 known substitutes for 55C146: 1628-5, RR-G-691, RR-G-691 TY1STASZ9 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 55C146?
55C146 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-646-3085. 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