PartsTable
Technical Data Sheet
PartsTable / MRO / MQ-1804
MQ-1804 ✓ 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,PAPER DIELECTRIC. Key specifications include body_style: W/MTG BRACKET, AXIAL TERMINALS, body_length: 2.250 INCHES NOMINAL IN, body_diameter: 1.125 INCHES NOMINAL IN, terminal_length: 1.500 INCHES MINIMUM IN, features_provided: HERMETICALLY SEALED CASE, terminal_diameter: 0.025 INCHES NOMINAL 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 5910-00-284-4120, 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→ MQ-1804
NSN: 5910-00-284-4120
FSC: 5910
CAGE: 23160 — LINDGREN RF ENCLOSURES INC ELMAG DIV (USA)
SPECIFICATIONS
body_styleW/MTG BRACKET, AXIAL TERMINALS
body_length2.250 INCHES NOMINAL IN
body_diameter1.125 INCHES NOMINAL IN
terminal_length1.500 INCHES MINIMUM IN
features_providedHERMETICALLY SEALED CASE
terminal_diameter0.025 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
nonderated_operating_temp-55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
terminal_surface_treatmentSOLDER
terminal_type_and_quantity2 UNINSULATED WIRE LEAD
tolerance_range_per_section-15.00 TO 25.00 PERCENT SINGLE SECTION
schematic_diagram_designatorELECTRODE(S) GROUNDED TO CASE, W/GND TERMINAL
NSN5910-00-284-4120
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,PAPER DIELECTRIC TITLE COMPONENT PN MQ-1804 MFR CAPACITOR,FIXED,PAPER
KEY FEATURES
•
TOLERANCE RANGE PER SECTION: -15.00 TO 25.00 PERCENT SINGLE SECTION
•
BODY DIAMETER: 1.125 INCHES NOMINAL IN
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
SCHEMATIC DIAGRAM DESIGNATOR: ELECTRODE(S) GROUNDED TO CASE, W/GND TERMINAL
•
NONDERATED OPERATING TEMP: -55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
•
CAPACITANCE VALUE PER SECTION: 4.000 MICROFARADS SINGLE SECTION
•
UNTHREADED MOUNTING HOLE DIAMETER: 0.156 INCHES NOMINAL IN
•
TERMINAL LENGTH: 1.500 INCHES MINIMUM 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)
TOLERANCE RANGE PER SECTION-15.00 TO 25.00 PERCENT SINGLE SECTION
BODY DIAMETER1.125 INCHES NOMINAL IN
FEATURES PROVIDEDHERMETICALLY SEALED CASE
SCHEMATIC DIAGRAM DESIGNATORELECTRODE(S) GROUNDED TO CASE, W/GND TERMINAL
NONDERATED OPERATING TEMP-55.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM DEGC
CAPACITANCE VALUE PER SECTION4.000 MICROFARADS SINGLE SECTION
UNTHREADED MOUNTING HOLE DIAMETER0.156 INCHES NOMINAL IN
TERMINAL LENGTH1.500 INCHES MINIMUM IN
BODY LENGTH2.250 INCHES NOMINAL IN
MOUNTING FACILITY TYPE AND QUANTITY2 UNTHREADED MOUNTING HOLES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
MILC2174SIZE2Interchangeable
interchangeable cross-reference
interchangeable
11T2434LInterchangeable
interchangeable cross-reference
interchangeable
5071Interchangeable
interchangeable cross-reference
interchangeable
B-100-FInterchangeable
interchangeable cross-reference
interchangeable
AY6Interchangeable
interchangeable cross-reference
interchangeable
4940614Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MQ-1804?
MQ-1804 is a CAPACITOR,FIXED,PAPER DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace MQ-1804?
There are 18 known substitutes for MQ-1804: MILC2174SIZE2, 11T2434L, 5071 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MQ-1804?
MQ-1804 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-00-284-4120. 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