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AT27C256R-45/XA — 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

The MICROCIRCUIT,MEMORY is a the manufacturer memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include part_name_assigned_by_controlling_agency: MICROCIRCUIT, MEMORY, DIGITAL, CMOS, 262, 144-BIT (32KX8) UV ERASABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5962-01-603-2776, 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
AT27C256R-45/XA
NSN: 5962-01-603-2776
FSC: 5962
CAGE: 0C7V7 — TELEDYNE DEFENSE ELECTRONICS, LLC DBA TELEDYNE E2V HIREL ELECTRONICS (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyMICROCIRCUIT, MEMORY, DIGITAL, CMOS, 262, 144-BIT (32KX8) UV ERASABLE
NSN5962-01-603-2776
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,MEMORY TITLE COMPONENT PN AT27C256R-45/XA MFR MICROCIRCUIT,MEMORY
TYPICAL APPLICATIONS
  • Server memory expansion for virtualization workloads
  • Database performance optimization (in-memory computing)
  • VDI and remote desktop session hosting
  • High-performance computing (HPC) clusters
  • Mail server and collaboration platform scaling
  • Application server tier expansion
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYMICROCIRCUIT, MEMORY, DIGITAL, CMOS, 262, 144-BIT (32KX8) UV ERASABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
10328209InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AM27C256-250/BXAInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SM27C256-25JMInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
VM27C256KMB-25InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5962-86063InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5962-8606302YXInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT27C256R-45/XA?
AT27C256R-45/XA is a MICROCIRCUIT,MEMORY.
What parts can replace AT27C256R-45/XA?
There are 29 known substitutes for AT27C256R-45/XA: 10328209, AM27C256-250/BXA, SM27C256-25JM and 26 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT27C256R-45/XA?
AT27C256R-45/XA is cataloged in the Federal Logistics Information System under NSN 5962-01-603-2776. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: September 2026