PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

44-128-1Microcircuit,memory

Celtech Corporation · NSN 5962-01-364-4521 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-01-364-4521 — this item is cataloged by the U.S. Government under National Stock Number 5962-01-364-4521. Primary manufacturer part number: 44-128-1.
Features
  • Microcircuit,memory — FSC 5962
  • Features Provided: PROGRAMMED
  • Terminal Type and Quantity: 28 PRINTED CIRCUIT
  • Memory Device Type: EPROM
  • Test Data Document: 65552-44-128-1 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
  • Specification/standard Data: 96906-MIL-STD-454L GOVERNMENT STANDARD
  • 4 verified cross-references
  • Primary manufacturer: Celtech Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,memory, cataloged under National Stock Number 5962-01-364-4521, 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 Celtech Corporation. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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
NSN5962-01-364-4521
Primary Part Number44-128-1
Item NameMicrocircuit,memory
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerCeltech Corporation
StatusACTIVE
Features ProvidedPROGRAMMED
Terminal Type and Quantity28 PRINTED CIRCUIT
Memory Device TypeEPROM
Test Data Document65552-44-128-1 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
Specification/standard Data96906-MIL-STD-454L GOVERNMENT STANDARD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-00-104-9408 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5905-00-853-23222D204 INTERCHANGEABLE
Resistor,thermal
Therm-O-Disc Inc Sub of Emerson Electric Co
5305-00-879-3059 INTERCHANGEABLE
Screw,machine
5920-01-157-1993 INTERCHANGEABLE
Fuse,cartridge
5920-01-250-3298GDC100MA INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
5962-01-364-452044-127-1 INTERCHANGEABLE
Microcircuit,memory
Celtech Corporation
5962-01-364-452244-129-1 INTERCHANGEABLE
Microcircuit,memory
Celtech Corporation
5962-01-364-452344-130-1 INTERCHANGEABLE
Microcircuit,memory
Celtech Corporation
5962-01-364-452444-127-3 INTERCHANGEABLE
Microcircuit,memory
Leonardo Us Cyber and Security Solutions, Llc
5962-01-364-452544-128-3 INTERCHANGEABLE
Microcircuit,memory
Celtech Corporation
Cross-Reference Index
Part NumberManufacturer
218-100 Celtech Corporation (USA)
D27C256-1 Intel Corp Field Sales Office FS020 (USA)
44-128-1 PRIMARY Celtech Corporation (USA)
ROM/PROM Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
Related Parts
5905-00-104-9408INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5905-00-853-2322INTERCHANGEABLE
RESISTOR,THERMAL
2D204
5305-00-879-3059INTERCHANGEABLE
SCREW,MACHINE
5920-01-157-1993INTERCHANGEABLE
FUSE,CARTRIDGE
5920-01-250-3298INTERCHANGEABLE
FUSE,CARTRIDGE
GDC100MA
5962-01-364-4520INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-127-1
5962-01-364-4522INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-129-1
5962-01-364-4523INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-130-1
5962-01-364-4524INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-127-3
5962-01-364-4525INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-128-3
5962-01-364-4526INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-129-2
5962-01-364-4527INTERCHANGEABLE
MICROCIRCUIT,MEMORY
44-130-2

Frequently Asked Questions

What is NSN 5962-01-364-4521?

NSN 5962-01-364-4521 is a Microcircuit,memory, manufactured by Celtech Corporation, classified under FSC 5962 (No Item Name Available). Status: active.

What are the part numbers for NSN 5962-01-364-4521?

NSN 5962-01-364-4521 has 4 cross-referenced part numbers: 218-100 (Celtech Corporation), D27C256-1 (Intel Corp Field Sales Office FS020), 44-128-1 (Celtech Corporation), ROM/PROM (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).

What NSN replaces 5962-01-364-4521?

There are 12 known substitutes for 5962-01-364-4521: 5905-00-104-9408, 5905-00-853-2322, 5305-00-879-3059 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 44-128-1?

Key specifications for 44-128-1: Features Provided: PROGRAMMED; Terminal Type and Quantity: 28 PRINTED CIRCUIT; Part Name Assigned by Controlling Agency: E-PROM MULTI-FUNCTION T20 LO MODIFICATION DRAWING; Memory Device Type: EPROM. 7 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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