PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DM27C256-300Microcircuit,memory

Seeq Technology Inc · NSN 5962-01-261-9627 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-01-261-9627 — this item is cataloged by the U.S. Government under National Stock Number 5962-01-261-9627. Primary manufacturer part number: DM27C256-300.
Features
  • Microcircuit,memory — FSC 5962
  • Body Length: 1.375 INCHES MAXIMUM IN
  • Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC
  • Test Data Document: 96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
  • Case Outline Source and Designator: D-10 MIL-M-38510
  • Terminal Surface Treatment: SOLDER
  • Terminal Type and Quantity: 28 PRINTED CIRCUIT
  • Current Rating Per Characteristic: 25.00 MILLIAMPERES MAXIMUM SUPPLY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,memory, cataloged under National Stock Number 5962-01-261-9627, is classified within Federal Supply Class 5962 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Seeq Technology Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5962-01-261-9627
Primary Part NumberDM27C256-300
Item NameMicrocircuit,memory
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerSeeq Technology Inc
StatusACTIVE
Body Length1.375 INCHES MAXIMUM IN
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Test Data Document96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
Case Outline Source and DesignatorD-10 MIL-M-38510
Terminal Surface TreatmentSOLDER
Terminal Type and Quantity28 PRINTED CIRCUIT
Current Rating Per Characteristic25.00 MILLIAMPERES MAXIMUM SUPPLY
Memory Device TypeEPROM
Voltage Rating and Type Per Characteristic14.0 VOLTS NOMINAL TOTAL SUPPLY
Features ProvidedMONOLITHIC AND ULTRAVIOLET ERASABLE AND PROGRAMMABLE
Storage Temp Range-65.0 TO 150.0 CELSIUS DEGC
Body Width0.500 INCHES MAXIMUM IN
Body Height0.185 INCHES MAXIMUM IN
Output Logic FormCOMPLEMENTARY-METAL OXIDE-SEMICONDUCTOR LOGIC
Inclosure ConfigurationDUAL-IN-LINE
Maximum Power Dissipation Rating275.0 MILLIWATTS
Input Circuit Pattern23 INPUT
Inclosure MaterialCERAMIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5962-01-261-9625 INTERCHANGEABLE
Microcircuit,memory
5962-01-261-9626 INTERCHANGEABLE
Microcircuit,memory
5962-01-262-9858 INTERCHANGEABLE
Microcircuit,memory
5962-01-319-5842 INTERCHANGEABLE
Microcircuit,memory
5962-01-329-7165 INTERCHANGEABLE
Microcircuit,memory
5962-01-352-1006 INTERCHANGEABLE
Microcircuit,memory
5962-01-371-3742 INTERCHANGEABLE
Microcircuit,memory
5962-01-389-7020 INTERCHANGEABLE
Microcircuit,memory
5962-01-447-1528 INTERCHANGEABLE
Microcircuit,memory
5962-01-465-3819 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
DM27C256-300 Seeq Technology Inc (USA)
5962-8606303XX Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
5962-8606303XB Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
5962-86063 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
ROM/PROM Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
WS27C256L-30DMB Waferscale Integration Inc (USA)
AM27C256-300/BXA Advanced Micro Devices Inc Dba AMD Austin (USA)
AT27C256R-30DM/883 Atmel Corporation (USA)
5962-8606303XA Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
SMJ27C256-30JDS Texas Instruments Incorporated (USA)
27C256BQ300/883 National Semiconductor Corporation (USA)
Related Parts
5962-01-261-9625INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-261-9626INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-262-9858INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-319-5842INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-329-7165INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-352-1006INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-371-3742INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-389-7020INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-447-1528INTERCHANGEABLE
MICROCIRCUIT,MEMORY
5962-01-465-3819INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5962-01-517-6032INTERCHANGEABLE
MICROCIRCUIT,MEMORY
P18280
5962-01-603-2776INTERCHANGEABLE
MICROCIRCUIT,MEMORY

Frequently Asked Questions

What is NSN 5962-01-261-9627?

NSN 5962-01-261-9627 is a Microcircuit,memory, manufactured by Seeq Technology Inc, classified under FSC 5962 (No Item Name Available). Status: active.

What are the part numbers for NSN 5962-01-261-9627?

NSN 5962-01-261-9627 has 11 cross-referenced part numbers: DM27C256-300 (Seeq Technology Inc), 5962-8606303XX (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit), 5962-8606303XB (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit), 5962-86063 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit), ROM/PROM (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)) and 6 more.

What NSN replaces 5962-01-261-9627?

There are 12 known substitutes for 5962-01-261-9627: 5962-01-261-9625, 5962-01-261-9626, 5962-01-262-9858 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of DM27C256-300?

Key specifications for DM27C256-300: Body Length: 1.375 INCHES MAXIMUM IN; Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC; Test Data Document: 96906-MIL-STD-883 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).; Case Outline Source and Designator: D-10 MIL-M-38510. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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