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AT-203/URM-6 — Technical Data Sheet

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— · 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

IBM FLEX SYSTEM FC5054 4-PORT FC-16GB ADAPTER. Key specifications include design_type: WHIP SINGLE ANTENNA ELEMENT, terminal_type: RECTANGULAR FLANGE SINGLE ANTENNA ELEMENT, overall_height: 4.417 FEET NOMINAL FT, mounting_method: BASE, frequency_rating: 14.000 KILOHERTZ MINIMUM AND 250.000 KILOHERTZ MAXIMUM SINGLE ANTENNA ELEMENT, radiation_pattern: BIDIRECTIONAL SINGLE ANTENNA ELEMENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-254-7148, 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
AT-203/URM-6
NSN: 5985-00-254-7148
FSC: 5985
CAGE: 80058 — JOINT ELECTRONICS TYPE DESIGNATION SYSTEM (USA)
SPECIFICATIONS
design_typeWHIP SINGLE ANTENNA ELEMENT
terminal_typeRECTANGULAR FLANGE SINGLE ANTENNA ELEMENT
overall_height4.417 FEET NOMINAL FT
mounting_methodBASE
frequency_rating14.000 KILOHERTZ MINIMUM AND 250.000 KILOHERTZ MAXIMUM SINGLE ANTENNA ELEMENT
radiation_patternBIDIRECTIONAL SINGLE ANTENNA ELEMENT
beam_scanning_methodFIXED SINGLE ANTENNA ELEMENT
fsc_application_dataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
termination_identification90076PT1 SINGLE ANTENNA ELEMENT
termination_manufacturer_code88869 SINGLE ANTENNA ELEMENT
NSN5985-00-254-7148
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR CAP: 16GB IBM FLEX SYSTEM FC5054 4-PORT FC-16GB ADAPTER TITLE COMPONENT PN AT-203/URM-6 MFR IBM FLEX SYSTEM FC5054
KEY FEATURES
•
16GB Capacity
•
FREQUENCY RATING: 14.000 KILOHERTZ MINIMUM AND 250.000 KILOHERTZ MAXIMUM SINGLE ANTENNA ELEMENT
•
RADIATION PATTERN: BIDIRECTIONAL SINGLE ANTENNA ELEMENT
•
TERMINATION MANUFACTURER CODE: 88869 SINGLE ANTENNA ELEMENT
•
MOUNTING METHOD: BASE
•
DESIGN TYPE: WHIP SINGLE ANTENNA ELEMENT
•
BEAM SCANNING METHOD: FIXED SINGLE ANTENNA ELEMENT
•
FSC APPLICATION DATA: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
•
TERMINATION IDENTIFICATION: 90076PT1 SINGLE ANTENNA ELEMENT
TYPICAL APPLICATIONS
  • Data center top-of-rack switching
  • High-speed server interconnects (10G/25G/40G/100G)
  • Storage network fabric (iSCSI, FCoE)
  • Campus and branch network infrastructure
  • Firewall and security appliance connectivity
  • WAN edge and SD-WAN deployments
TECHNICAL CHARACTERISTICS (FLIS)
FREQUENCY RATING14.000 KILOHERTZ MINIMUM AND 250.000 KILOHERTZ MAXIMUM SINGLE ANTENNA ELEMENT
RADIATION PATTERNBIDIRECTIONAL SINGLE ANTENNA ELEMENT
TERMINATION MANUFACTURER CODE88869 SINGLE ANTENNA ELEMENT
MOUNTING METHODBASE
DESIGN TYPEWHIP SINGLE ANTENNA ELEMENT
BEAM SCANNING METHODFIXED SINGLE ANTENNA ELEMENT
FSC APPLICATION DATAANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
TERMINATION IDENTIFICATION90076PT1 SINGLE ANTENNA ELEMENT
TERMINAL TYPERECTANGULAR FLANGE SINGLE ANTENNA ELEMENT
OVERALL HEIGHT4.417 FEET NOMINAL FT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
LA-361-5Interchangeable
interchangeable cross-reference
interchangeable
1923GInterchangeable
interchangeable cross-reference
interchangeable
424MAS1Interchangeable
interchangeable cross-reference
interchangeable
5054Interchangeable
IBM Flex System FC5054 4-Port FC-16GB Adapter
interchangeable
4NBC612ZPANG25Interchangeable
interchangeable cross-reference
interchangeable
91091Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT-203/URM-6?
AT-203/URM-6 is a IBM FLEX SYSTEM FC5054 4-PORT FC-16GB ADAPTER.
What parts can replace AT-203/URM-6?
There are 14 known substitutes for AT-203/URM-6: LA-361-5, 1923G, 424MAS1 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT-203/URM-6?
AT-203/URM-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5985-00-254-7148. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026