PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-S-19500/431Transistor

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5961-01-197-9477 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-197-9477 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-197-9477. Primary manufacturer part number: MIL-S-19500/431.
Features
  • Transistor — FSC 5961
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-18
  • Mounting Method: TERMINAL
  • Terminal Length: 0.500 INCHES MINIMUM IN
  • Semiconductor Material: SILICON
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Overall Diameter: 0.230 INCHES MAXIMUM IN
  • Power Rating Per Characteristic: 360.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-197-9477, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-197-9477
Primary Part NumberMIL-S-19500/431
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-18
Mounting MethodTERMINAL
Terminal Length0.500 INCHES MINIMUM IN
Semiconductor MaterialSILICON
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Overall Diameter0.230 INCHES MAXIMUM IN
Power Rating Per Characteristic360.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
Maximum Operating Temp Per Measurement Point175.0 CELSIUS JUNCTION DEGC
Voltage Rating in Volts Per Characteristic-40.0 MAXIMUM GATE TO SOURCE VOLTAGE AND 40.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 40.0 MAXIMUM DRAIN TO GATE 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.).
Features ProvidedHERMETICALLY SEALED CASE AND QUALITY ASSURANCE LEVEL TXV
Specification/standard Data81349-MIL-S-19500/431 GOVERNMENT SPECIFICATION
Internal ConfigurationFIELD EFFECT
Current Rating Per Characteristic10.00 MILLIAMPERES MAXIMUM GATE CURRENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5961-00-227-5076 INTERCHANGEABLE
Transistor
5961-00-450-1164 INTERCHANGEABLE
Transistor
5961-00-539-3103 INTERCHANGEABLE
Transistor
5961-01-017-6024 INTERCHANGEABLE
Transistor
5961-01-044-5840 INTERCHANGEABLE
Transistor
5961-01-066-6356 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
MIL-S-19500/431 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-19500/431 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JANTXV2N4091 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5961-00-227-5076INTERCHANGEABLE
TRANSISTOR
5961-00-450-1164INTERCHANGEABLE
TRANSISTOR
5961-00-539-3103INTERCHANGEABLE
TRANSISTOR
5961-01-017-6024INTERCHANGEABLE
TRANSISTOR
5961-01-044-5840INTERCHANGEABLE
TRANSISTOR
5961-01-066-6356INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-01-197-9477?

NSN 5961-01-197-9477 is a Transistor, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-197-9477?

NSN 5961-01-197-9477 has 3 cross-referenced part numbers: MIL-S-19500/431 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-19500/431 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), JANTXV2N4091 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5961-01-197-9477?

There are 6 known substitutes for 5961-01-197-9477: 5961-00-227-5076, 5961-00-450-1164, 5961-00-539-3103 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-S-19500/431?

Key specifications for MIL-S-19500/431: Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-18; Mounting Method: TERMINAL; Terminal Length: 0.500 INCHES MINIMUM IN; Semiconductor Material: SILICON. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com