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Technical Data Sheet

MR27C256-25/B — MICROCIRCUIT,MEMORY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

MR27C256-25/B: MICROCIRCUIT,MEMORY.

The MICROCIRCUIT,MEMORY is a the manufacturer memory module engineered for enterprise server and workstation platforms requiring validated, high-reliability memory. Key specifications include body_width: 0.560 INCHES MAXIMUM IN, body_height: 0.110 INCHES MAXIMUM IN, body_length: 0.560 INCHES MAXIMUM IN, features_provided: MONOLITHIC AND ELECTROSTATIC SENSITIVE AND ULTRAVIOLET ERASABLE, output_logic_form: COMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC, inclosure_material: CERAMIC. This part is cataloged in the U.S.

Government catalog under NSN 5962-01-349-6973, 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
MR27C256-25/B
NSN: 5962-01-349-6973
FSC: 5962 — Microcircuits, Electronic
CAGE: 9N185 — SST COMPONENTS, INC. DBA VPT COMPONENTS (USA)
SPECIFICATIONS
body_width0.560 INCHES MAXIMUM IN
body_height0.110 INCHES MAXIMUM IN
body_length0.560 INCHES MAXIMUM IN
features_providedMONOLITHIC AND ELECTROSTATIC SENSITIVE AND ULTRAVIOLET ERASABLE
output_logic_formCOMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC
inclosure_materialCERAMIC
memory_device_typeEPROM
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
input_circuit_pattern14 INPUT
inclosure_configurationLEADED CHIP CARRIER
terminal_surface_treatmentSOLDER
NSN5962-01-349-6973
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,MEMORY TITLE COMPONENT PN MR27C256-25/B MFR MICROCIRCUIT,MEMORY
KEY FEATURES
•
INPUT CIRCUIT PATTERN: 14 INPUT
•
INCLOSURE MATERIAL: CERAMIC
•
TERMINAL SURFACE TREATMENT: SOLDER
•
BODY WIDTH: 0.560 INCHES MAXIMUM IN
•
BODY HEIGHT: 0.110 INCHES MAXIMUM IN
•
FEATURES PROVIDED: MONOLITHIC AND ELECTROSTATIC SENSITIVE AND ULTRAVIOLET ERASABLE
•
INCLOSURE CONFIGURATION: LEADED CHIP CARRIER
•
MEMORY DEVICE TYPE: EPROM
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
INPUT CIRCUIT PATTERN14 INPUT
INCLOSURE MATERIALCERAMIC
TERMINAL SURFACE TREATMENTSOLDER
BODY WIDTH0.560 INCHES MAXIMUM IN
BODY HEIGHT0.110 INCHES MAXIMUM IN
FEATURES PROVIDEDMONOLITHIC AND ELECTROSTATIC SENSITIVE AND ULTRAVIOLET ERASABLE
INCLOSURE CONFIGURATIONLEADED CHIP CARRIER
MEMORY DEVICE TYPEEPROM
BODY LENGTH0.560 INCHES MAXIMUM IN
STORAGE TEMP RANGE-65.0 TO 150.0 CELSIUS DEGC
OTHER ITEMS IN FSC 5962 — Microcircuits, Electronic
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5962-00-001-1861 5962-00-001-1901 5962-00-001-1902 5962-00-001-1905 5962-00-001-1906 5962-00-001-1907 5962-00-001-1908 5962-00-001-1909
SUBSTITUTES & CROSS-REFERENCES 1
ROM/PROMReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is MR27C256-25/B?
MR27C256-25/B is a MICROCIRCUIT,MEMORY.
What parts can replace MR27C256-25/B?
There is 1 known substitute for MR27C256-25/B: ROM/PROM. Substitute compatibility should be verified for your specific system.
What is the NSN for MR27C256-25/B?
MR27C256-25/B is cataloged in the U.S. Government catalog under NSN 5962-01-349-6973. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.