PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N3644Semiconductor Device,diode

Unitrode Corp High Voltage Devices Inc · NSN 5961-00-877-7113 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-877-7113 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-877-7113. Primary manufacturer part number: 1N3644.
Features
  • Semiconductor Device,diode — FSC 5961
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Specification/standard Data: 81349-MIL-S-19500/279 GOVERNMENT SPECIFICATION
  • Features Provided: HERMETICALLY SEALED CASE
  • Voltage Rating in Volts Per Characteristic: 1500.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS
  • Current Rating Per Characteristic: 100.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
  • Overall Diameter: 0.065 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Terminal Length: 1.000 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
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 5961-00-877-7113, 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 Unitrode Corp High Voltage Devices Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-877-7113
Primary Part Number1N3644
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerUnitrode Corp High Voltage Devices Inc
StatusACTIVE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Specification/standard Data81349-MIL-S-19500/279 GOVERNMENT SPECIFICATION
Features ProvidedHERMETICALLY SEALED CASE
Voltage Rating in Volts Per Characteristic1500.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS
Current Rating Per Characteristic100.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
Overall Diameter0.065 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
Terminal Length1.000 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
Mounting MethodTERMINAL
MaterialSILICON SEMICONDUCTOR
MaterialGLASS ENCLOSURE
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.).
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5961-00-345-7698 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-456-4710 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-929-4898 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-015-9015 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-069-9545 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-080-1468 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-292-1570 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
1N3644 Unitrode Corp High Voltage Devices Inc (USA)
MIL-PRF-19500/279 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILS19500-279 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN1N3644 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
S12 Semicon Components Inc (USA)
Q 5 3178 4555 Rheinmetall Soldier Electronics Gmbh (DEU)
1N3644 Semtech Corporation (USA)
Related Parts
5961-00-345-7698INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-456-4710INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-929-4898INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-015-9015INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-069-9545INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-080-1468INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-292-1570INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-00-877-7113?

NSN 5961-00-877-7113 is a Semiconductor Device,diode, manufactured by Unitrode Corp High Voltage Devices Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-877-7113?

NSN 5961-00-877-7113 has 7 cross-referenced part numbers: 1N3644 (Unitrode Corp High Voltage Devices Inc), MIL-PRF-19500/279 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILS19500-279 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), JAN1N3644 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), S12 (Semicon Components Inc) and 2 more.

What NSN replaces 5961-00-877-7113?

There are 7 known substitutes for 5961-00-877-7113: 5961-00-345-7698, 5961-00-456-4710, 5961-00-929-4898 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N3644?

Key specifications for 1N3644: Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Specification/standard Data: 81349-MIL-S-19500/279 GOVERNMENT SPECIFICATION; Features Provided: HERMETICALLY SEALED CASE; Voltage Rating in Volts Per Characteristic: 1500.0 MAXIMUM REVERSE VOLTAGE, INSTANTANEOUS. 12 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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