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PartsTable / COMPONENT / MX554A/U-51
MX554A/U-51 ✓ 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

The MX554A/U-51 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-229-1904, 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
MX554A/U-51
NSN: 5985-00-229-1904
FSC: 5985
CAGE: 91836 — WINCHESTER INTERCONNECT CORPORATION (USA)
SPECIFICATIONS
Part NumberMX554A/U-51
NSN5985-00-229-1904
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MX554A/U-51 TITLE COMPONENT PN MX554A/U-51 MFR MX554A/U-51
KEY FEATURES
•
IMPEDANCE RATING IN OHMS: 50.0 NOMINAL
•
VOLTAGE STANDING WAVE RATIO: 1.25
•
STYLE DESIGNATOR: COAXIAL MOUNTED
•
VOLTAGE STANDING WAVE RATIO FREQUENCY RANGE: +0.000 TO 10.000 GIGAHERTZ
•
TERMINATION TYPE: CONNECTION COAXIAL
•
OPERATING POSITION: ALL POSITIONS
•
COOLING METHOD: SELF-COOLED
TECHNICAL CHARACTERISTICS (FLIS)
IMPEDANCE RATING IN OHMS50.0 NOMINAL
VOLTAGE STANDING WAVE RATIO1.25
STYLE DESIGNATORCOAXIAL MOUNTED
VOLTAGE STANDING WAVE RATIO FREQUENCY RANGE+0.000 TO 10.000 GIGAHERTZ
TERMINATION TYPECONNECTION COAXIAL
OPERATING POSITIONALL POSITIONS
SPECIAL FEATURESSILVER ON CONTACTS AND BODY
COOLING METHODSELF-COOLED
OVERALL DIAMETER0.563 INCHES NOMINAL IN
FREQUENCY RANGE RATING+0.000 TO 10.000 GIGAHERTZ
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1217078-201Interchangeable
interchangeable cross-reference
interchangeable
MDC91121-51Interchangeable
interchangeable cross-reference
interchangeable
IPC4700-51Interchangeable
interchangeable cross-reference
interchangeable
114-431-0002Interchangeable
interchangeable cross-reference
interchangeable
35650-51Interchangeable
interchangeable cross-reference
interchangeable
1250-0041Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MX554A/U-51?
MX554A/U-51 is a MX554A/U-51.
What parts can replace MX554A/U-51?
There are 12 known substitutes for MX554A/U-51: 1217078-201, MDC91121-51, IPC4700-51 and 9 more. Substitute compatibility should be verified for your specific system.
Is MX554A/U-51 still available?
MX554A/U-51 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