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PartsTable / COMPONENT / RRF191-4
RRF191-4 ✓ 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

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include shape: CUP SHAPED W/OFFSET END, diameter: 1.900 INCHES NOMINAL IN, material: STEEL, post_shape: ROUND, outside_diameter: 1.625 INCHES NOMINAL IN, style_designator: RAIL END COMBINATION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5660-00-116-3860, 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
RRF191-4
NSN: 5660-00-116-3860
FSC: 5660
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
shapeCUP SHAPED W/OFFSET END
diameter1.900 INCHES NOMINAL IN
materialSTEEL
post_shapeROUND
outside_diameter1.625 INCHES NOMINAL IN
style_designatorRAIL END COMBINATION
surface_treatmentZINC
nondefinitive_spec/std_data2 TYPE
specification/standard_data81348-RR-F-191/4 GOVERNMENT SPECIFICATION
NSN5660-00-116-3860
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN RRF191-4 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
STYLE DESIGNATOR: BRACE RAIL END
•
MATERIAL: IRON
•
OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 81348-RR-F-191/4 GOVERNMENT SPECIFICATION
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE
•
SHAPE: CUP SHAPED W/BRACE END
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)
STYLE DESIGNATORBRACE RAIL END
MATERIALIRON
OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA81348-RR-F-191/4 GOVERNMENT SPECIFICATION
NONDEFINITIVE SPEC/STD DATA2 TYPE
SHAPECUP SHAPED W/BRACE END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
1469Interchangeable
interchangeable cross-reference
interchangeable
5RInterchangeable
interchangeable cross-reference
interchangeable
P0Interchangeable
interchangeable cross-reference
interchangeable
M0SDW5-312-5Interchangeable
interchangeable cross-reference
interchangeable
6179Interchangeable
interchangeable cross-reference
interchangeable
P720538P38SUB30Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RRF191-4?
RRF191-4 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace RRF191-4?
There are 19 known substitutes for RRF191-4: 1469, 5R, P0 and 16 more. Substitute compatibility should be verified for your specific system.
Is RRF191-4 still available?
RRF191-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026