PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-PRF-19500/539Transistor

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5961-01-184-5281 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-184-5281 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-184-5281. Primary manufacturer part number: MIL-PRF-19500/539.
Features
  • Transistor — FSC 5961
  • Maximum Operating Temp Per Measurement Point: 175.0 CELSIUS AMBIENT AIR DEGC
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-66
  • Internal Configuration: JUNCTION CONTACT
  • Mounting Facility Quantity: 2
  • Power Rating Per Characteristic: 32.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
  • Specification/standard Data: 81349-MIL-S-19500/539 GOVERNMENT SPECIFICATION
  • Semiconductor Material: SILICON
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-184-5281, 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 15 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-01-184-5281
Primary Part NumberMIL-PRF-19500/539
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
StatusCANCELLED
Maximum Operating Temp Per Measurement Point175.0 CELSIUS AMBIENT AIR DEGC
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-66
Internal ConfigurationJUNCTION CONTACT
Mounting Facility Quantity2
Power Rating Per Characteristic32.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
Specification/standard Data81349-MIL-S-19500/539 GOVERNMENT SPECIFICATION
Semiconductor MaterialSILICON
Mounting MethodUNTHREADED HOLE(S)
Voltage Rating in Volts Per Characteristic80.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
Internal Junction ConfigurationNPN
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Terminal Type and Quantity1 CASE AND 2 PIN
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.).
Current Rating Per Characteristic8.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 120.00 MILLIAMPERES MAXIMUM BASE CURRENT, DC
Features ProvidedHERMETICALLY SEALED CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5961-00-283-5524 INTERCHANGEABLE
Transistor
5961-01-168-6541 INTERCHANGEABLE
Transistor
5961-01-193-8524 INTERCHANGEABLE
Transistor
5961-01-215-7483 INTERCHANGEABLE
Transistor
5961-01-233-2115 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
MIL-PRF-19500/539 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-S-19500/539 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN2N6301 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5961-00-283-5524INTERCHANGEABLE
TRANSISTOR
5961-01-168-6541INTERCHANGEABLE
TRANSISTOR
5961-01-193-8524INTERCHANGEABLE
TRANSISTOR
5961-01-215-7483INTERCHANGEABLE
TRANSISTOR
5961-01-233-2115INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-01-184-5281?

NSN 5961-01-184-5281 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: cancelled.

What are the part numbers for NSN 5961-01-184-5281?

NSN 5961-01-184-5281 has 3 cross-referenced part numbers: MIL-PRF-19500/539 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-S-19500/539 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), JAN2N6301 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5961-01-184-5281?

There are 5 known substitutes for 5961-01-184-5281: 5961-00-283-5524, 5961-01-168-6541, 5961-01-193-8524 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-PRF-19500/539?

Key specifications for MIL-PRF-19500/539: Maximum Operating Temp Per Measurement Point: 175.0 CELSIUS AMBIENT AIR DEGC; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-66; Internal Configuration: JUNCTION CONTACT; Mounting Facility Quantity: 2. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-01-184-5281 still in active supply?

NSN 5961-01-184-5281 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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