PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

639591Semiconductor Device,diode

Union Carbide Corp Sub of Dow Co the · NSN 5961-01-022-6866 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-022-6866 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-022-6866. Primary manufacturer part number: 639591.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: SILICON SEMICONDUCTOR
  • Overall Width Across Flats: 1.250 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 1 THREADED STUD AND 1 TAB, SOLDER LUG
  • Features Provided: HERMETICALLY SEALED CASE
  • 5 verified cross-references
  • Primary manufacturer: Union Carbide Corp Sub of Dow Co the
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Silicon Semiconductor construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-022-6866, is classified within Federal Supply Class 5961 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Union Carbide Corp Sub of Dow Co the. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-022-6866
Primary Part Number639591
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerUnion Carbide Corp Sub of Dow Co the
StatusACTIVE
MaterialSILICON SEMICONDUCTOR
Overall Width Across Flats1.250 INCHES MAXIMUM IN
Terminal Type and Quantity1 THREADED STUD AND 1 TAB, SOLDER LUG
Features ProvidedHERMETICALLY SEALED CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5962-01-093-8823 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
639591 Union Carbide Corp Sub of Dow Co the (USA)
300UR25A International Rectifier Corporation (USA)
PM-D61 Marine Electric Systems Inc (USA)
672384 Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng (USA)
300UR25A Infineon Technologies Americas Corp (USA)
Related Parts
5962-01-093-8823INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 5961-01-022-6866?

NSN 5961-01-022-6866 is a Semiconductor Device,diode, manufactured by Union Carbide Corp Sub of Dow Co the, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-022-6866?

NSN 5961-01-022-6866 has 5 cross-referenced part numbers: 639591 (Union Carbide Corp Sub of Dow Co the), 300UR25A (International Rectifier Corporation), PM-D61 (Marine Electric Systems Inc), 672384 (Esab Group, Inc., the Dba Esab Welding and Cutting Products Div Esab Welding and Cuttng), 300UR25A (Infineon Technologies Americas Corp).

What NSN replaces 5961-01-022-6866?

There is 1 known substitute for 5961-01-022-6866: 5962-01-093-8823. Verify interchangeability with system specifications before substitution.

What are the specifications of 639591?

Key specifications for 639591: Material: SILICON SEMICONDUCTOR; Overall Width Across Flats: 1.250 INCHES MAXIMUM IN; Overall Length: 1.120 INCHES MAXIMUM IN; Terminal Type and Quantity: 1 THREADED STUD AND 1 TAB, SOLDER LUG. 5 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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