PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

577R345H26REVESemiconductor Device,diode

Westinghouse Electric Corp · NSN 5961-01-143-8341 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-143-8341 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-143-8341. Primary manufacturer part number: 577R345H26REVE.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: GLASS ENCLOSURE
  • Material: SILICON SEMICONDUCTOR
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Power Rating Per Characteristic: 1.5 WATTS MAXIMUM TOTAL POWER DISSIPATION
  • Voltage Rating in Volts Per Characteristic: 150.0 MAXIMUM NOMINAL REGULATOR VOLTAGE
  • Test Data Document: 81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Terminal Length: 0.800 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Glass Enclosure construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-143-8341, 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 Westinghouse Electric Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-01-143-8341
Primary Part Number577R345H26REVE
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerWestinghouse Electric Corp
StatusCANCELLED
MaterialGLASS ENCLOSURE
MaterialSILICON SEMICONDUCTOR
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Power Rating Per Characteristic1.5 WATTS MAXIMUM TOTAL POWER DISSIPATION
Voltage Rating in Volts Per Characteristic150.0 MAXIMUM NOMINAL REGULATOR VOLTAGE
Test Data Document81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Terminal Length0.800 INCHES MINIMUM AND 1.300 INCHES MAXIMUM IN
Current Rating Per Characteristic1.70 AMPERES MAXIMUM VOLTAGE REGULATOR DIODE CURRENT
Mounting MethodTERMINAL
Maximum Operating Temp Per Measurement Point175.0 CELSIUS AMBIENT AIR DEGC
Overall Diameter0.060 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASE
Specification/standard Data81349-MIL-S-19500/406 GOVERNMENT SPECIFICATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5961-00-148-8801 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-726-8994 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-824-5220 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-953-1977 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-172-4570 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
577R345H26REVE Westinghouse Electric Corp (USA)
RELEASE4669 Electronic Industries Association
1N4493 General Semiconductor Industries Inc (USA)
1N4493 Semiconductor Devices Inc (USA)
UZ447 Micro Uspd Inc (USA)
1N4190A Sylvania Electric Products Inc Semiconductor Products Div (USA)
MIL-PRF-19500/406 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1N4493 Micro Uspd Inc (USA)
JANTX1N4493 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN1N4493 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1N4493 Microsemi Corp - Massachusetts (USA)
MIL-S-19500/406 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1N4493 Electronic Industries Association
1N4493 Slater Electric Inc (USA)
1N4493 N a P Smd Technology Inc
577R345H26REVE Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
5961-00-148-8801INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-726-8994INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-824-5220INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-953-1977INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-172-4570INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-01-143-8341?

NSN 5961-01-143-8341 is a Semiconductor Device,diode, manufactured by Westinghouse Electric Corp, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-01-143-8341?

NSN 5961-01-143-8341 has 16 cross-referenced part numbers: 577R345H26REVE (Westinghouse Electric Corp), RELEASE4669 (Electronic Industries Association), 1N4493 (General Semiconductor Industries Inc), 1N4493 (Semiconductor Devices Inc), UZ447 (Micro Uspd Inc) and 11 more.

What NSN replaces 5961-01-143-8341?

There are 5 known substitutes for 5961-01-143-8341: 5961-00-148-8801, 5961-00-726-8994, 5961-00-824-5220 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 577R345H26REVE?

Key specifications for 577R345H26REVE: Material: GLASS ENCLOSURE; Material: SILICON SEMICONDUCTOR; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Power Rating Per Characteristic: 1.5 WATTS MAXIMUM TOTAL POWER DISSIPATION. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-01-143-8341 still in active supply?

NSN 5961-01-143-8341 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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