PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N5665ASemiconductor Device,diode

Marathon Electric, Llc · NSN 5961-01-091-4029 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-091-4029 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-091-4029. Primary manufacturer part number: 1N5665A.
Features
  • Semiconductor Device,diode — FSC 5961
  • Specification/standard Data: 81349-MIL-S-19500/500 GOVERNMENT SPECIFICATION
  • Material: SILICON SEMICONDUCTOR
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • 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.).
  • Mounting Method: TERMINAL
  • Terminal Length: 1.000 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
  • Electrode Internally-Electrically Connected to Case: CATHODE
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 5961-01-091-4029, 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 Marathon Electric, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-091-4029
Primary Part Number1N5665A
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerMarathon Electric, Llc
StatusACTIVE
Specification/standard Data81349-MIL-S-19500/500 GOVERNMENT SPECIFICATION
MaterialSILICON SEMICONDUCTOR
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
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.).
Mounting MethodTERMINAL
Terminal Length1.000 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN
Electrode Internally-Electrically Connected to CaseCATHODE
Power Rating Per Characteristic1.0 WATTS MAXIMUM AVERAGE ON-STATE POWER DISSIPATION
Joint Electronic Device Engineering Council/jedec/case Outline DesignationDO-13
Overall Diameter0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
Maximum Operating Temp Per Measurement Point175.0 CELSIUS JUNCTION DEGC
Current Rating Per Characteristic200.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
Voltage Rating in Volts Per Characteristic171.0 MAXIMUM WORKING PEAK REVERSE VOLTAGE
Function for Which DesignedTRANSIENT SUPPRESSOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5920-00-284-679712Z7005-5002 INTERCHANGEABLE
Fuseholder,block
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5915-00-846-37317744466P9 INTERCHANGEABLE
Filter,band Pass
Lockheed Martin Corporation Div Rms
5961-01-005-5153 INTERCHANGEABLE
Semiconductor Device,diode
8465-01-415-3019357009 INTERCHANGEABLE
Bag,water Carrying
Mountain Safety Research Inc
Cross-Reference Index
Part NumberManufacturer
1N5665A Marathon Electric, Llc (USA)
35-700-9 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
JAN1N5665A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-19500/500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-19500/500 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
352250025662 Thales Nederland (NLD)
Related Parts
5920-00-284-6797INTERCHANGEABLE
FUSEHOLDER,BLOCK
12Z7005-5002
5915-00-846-3731INTERCHANGEABLE
FILTER,BAND PASS
7744466P9
5961-01-005-5153INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
8465-01-415-3019INTERCHANGEABLE
BAG,WATER CARRYING
357009

Frequently Asked Questions

What is NSN 5961-01-091-4029?

NSN 5961-01-091-4029 is a Semiconductor Device,diode, manufactured by Marathon Electric, Llc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-091-4029?

NSN 5961-01-091-4029 has 6 cross-referenced part numbers: 1N5665A (Marathon Electric, Llc), 35-700-9 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), JAN1N5665A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-19500/500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-19500/500 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5961-01-091-4029?

There are 4 known substitutes for 5961-01-091-4029: 5920-00-284-6797, 5915-00-846-3731, 5961-01-005-5153 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N5665A?

Key specifications for 1N5665A: Specification/standard Data: 81349-MIL-S-19500/500 GOVERNMENT SPECIFICATION; Material: SILICON SEMICONDUCTOR; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; 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.).. 15 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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