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PartsTable / COMPONENT / 638A940H01
638A940H01 ✓ Verified by PartsTable
— · 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 body_width: 0.294 INCHES MAXIMUM IN, body_height: 0.179 INCHES MAXIMUM IN, body_length: 0.808 INCHES MAXIMUM IN, memory_capacity: UNKNOWN, output_logic_form: TRANSISTOR-TRANSISTOR LOGIC, inclosure_material: CERAMIC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-093-8821, 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
638A940H01
NSN: 5962-01-093-8821
FSC: 5962
CAGE: 97942 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
body_width0.294 INCHES MAXIMUM IN
body_height0.179 INCHES MAXIMUM IN
body_length0.808 INCHES MAXIMUM IN
memory_capacityUNKNOWN
features_providedBIPOLAR AND HERMETICALLY SEALED AND MONOLITHIC AND 3-STATE OUTPUT AND W/ENABLE AND PROGRAMMABLE AND PROGRAMMED AND HIGH SPEED
output_logic_formTRANSISTOR-TRANSISTOR LOGIC
inclosure_materialCERAMIC
memory_device_typeROM
storage_temp_range-65.0 TO 150.0 CELSIUS DEGC
operating_temp_range-55.0 TO 125.0 CELSIUS DEGC
input_circuit_pattern6 INPUT
inclosure_configurationDUAL-IN-LINE
NSN5962-01-093-8821
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,MEMORY TITLE COMPONENT PN 638A940H01 MFR MICROCIRCUIT,MEMORY
KEY FEATURES
•
VOLTAGE RATING AND TYPE PER CHARACTERISTIC: 5.5 VOLTS MAXIMUM POWER SOURCE
•
TEST DATA DOCUMENT: 97942-581R137 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)
•
TERMINAL SURFACE TREATMENT: SOLDER
•
TERMINAL TYPE AND QUANTITY: 16 PRINTED CIRCUIT
•
MEMORY CAPACITY: UNKNOWN
•
MEMORY DEVICE TYPE: ROM
•
BODY WIDTH: 0.294 INCHES MAXIMUM IN
•
STORAGE TEMP RANGE: -65.0 TO 150.0 CELSIUS DEGC
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 (FLIS)
VOLTAGE RATING AND TYPE PER CHARACTERISTIC5.5 VOLTS MAXIMUM POWER SOURCE
TEST DATA DOCUMENT97942-581R137 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)
TERMINAL SURFACE TREATMENTSOLDER
TERMINAL TYPE AND QUANTITY16 PRINTED CIRCUIT
MEMORY CAPACITYUNKNOWN
MEMORY DEVICE TYPEROM
BODY WIDTH0.294 INCHES MAXIMUM IN
STORAGE TEMP RANGE-65.0 TO 150.0 CELSIUS DEGC
OPERATING TEMP RANGE-55.0 TO 125.0 CELSIUS DEGC
FEATURES PROVIDEDBIPOLAR AND HERMETICALLY SEALED AND MONOLITHIC AND 3-STATE OUTPUT AND W/ENABLE AND PROGRAMMABLE AND PROGRAMMED AND HIGH SPEED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
581R137H01Interchangeable
interchangeable cross-reference
interchangeable
638A938H01Interchangeable
interchangeable cross-reference
interchangeable
IM5610MDEInterchangeable
interchangeable cross-reference
interchangeable
638A939H01Interchangeable
interchangeable cross-reference
interchangeable
638A929H01Interchangeable
interchangeable cross-reference
interchangeable
638A932H01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 638A940H01?
638A940H01 is a MICROCIRCUIT,MEMORY.
What parts can replace 638A940H01?
There are 13 known substitutes for 638A940H01: 581R137H01, 638A938H01, IM5610MDE and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 638A940H01?
638A940H01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-093-8821. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026