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PartsTable / COMPONENT / 639785-203
639785-203 ✓ 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: 0.595 INCHES MAXIMUM IN, body_height: 0.180 INCHES MAXIMUM IN, body_length: 1.290 INCHES MAXIMUM IN, word_quantity: 4096, memory_capacity: UNKNOWN, special_features: ELECTROSTATIC DISCHARGE SENSITIVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-341-8875, 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
639785-203
NSN: 5962-01-341-8875
FSC: 5962
CAGE: 14482 — WATKINS-JOHNSON CO (USA)
SPECIFICATIONS
body_width0.595 INCHES MAXIMUM IN
body_height0.180 INCHES MAXIMUM IN
body_length1.290 INCHES MAXIMUM IN
word_quantity4096
memory_capacityUNKNOWN
special_featuresELECTROSTATIC DISCHARGE SENSITIVE
features_providedMONOLITHIC AND ULTRAVIOLET ERASABLE AND PROGRAMMED
output_logic_formMETAL OXIDE-SEMICONDUCTOR LOGIC
inclosure_materialCERAMIC
memory_device_typePROM
storage_temp_range-55.0 TO 125.0 CELSIUS DEGC
operating_temp_range+0.0 TO 70.0 CELSIUS DEGC
NSN5962-01-341-8875
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MICROCIRCUIT,MEMORY TITLE COMPONENT PN 639785-203 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
D2732A-2Interchangeable
interchangeable cross-reference
interchangeable
1017Y6417-1Interchangeable
interchangeable cross-reference
interchangeable
ROM/PROM FAMILY 124Interchangeable
interchangeable cross-reference
interchangeable
1017Y6417-2Interchangeable
interchangeable cross-reference
interchangeable
1017Y6417-3Interchangeable
interchangeable cross-reference
interchangeable
160-1483-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 639785-203?
639785-203 is a MICROCIRCUIT,MEMORY.
What parts can replace 639785-203?
There are 14 known substitutes for 639785-203: D2732A-2, 1017Y6417-1, ROM/PROM FAMILY 124 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 639785-203?
639785-203 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5962-01-341-8875. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026