PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILS19500-251Transistor

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5961-00-406-3074 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-406-3074 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-406-3074. Primary manufacturer part number: MILS19500-251.
Features
  • Transistor — FSC 5961
  • Semiconductor Material: SILICON
  • Voltage Rating in Volts Per Characteristic: 75.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 6.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
  • Features Provided: HERMETICALLY SEALED CASE
  • Terminal Length: 0.500 INCHES MINIMUM IN
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
  • Electrode Internally-Electrically Connected to Case: COLLECTOR
  • Terminal Circle Diameter: 0.200 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-406-3074, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-406-3074
Primary Part NumberMILS19500-251
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
Semiconductor MaterialSILICON
Voltage Rating in Volts Per Characteristic75.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 6.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Features ProvidedHERMETICALLY SEALED CASE
Terminal Length0.500 INCHES MINIMUM IN
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Terminal Circle Diameter0.200 INCHES NOMINAL IN
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Specification/standard Data81349-MIL-S-19500/251 GOVERNMENT SPECIFICATION
Power Rating Per Characteristic3.0 WATTS MAXIMUM TOTAL POWER DISSIPATION
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
Current Rating Per Characteristic800.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Overall Diameter0.370 INCHES MAXIMUM IN
Internal ConfigurationJUNCTION CONTACT
Joint Electronic Device Engineering Council/jedec/case Outline DesignationT0-39
Transfer Ratio50.0 MAXIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5961-00-022-4386 INTERCHANGEABLE
Transistor
5961-00-050-7499 INTERCHANGEABLE
Transistor
5961-00-059-4464 INTERCHANGEABLE
Transistor
5961-00-436-8797 INTERCHANGEABLE
Transistor
5961-00-450-6343 INTERCHANGEABLE
Transistor
5961-00-457-9158 INTERCHANGEABLE
Transistor
5961-00-926-2533 INTERCHANGEABLE
Transistor
5961-00-949-1432 INTERCHANGEABLE
Transistor
5961-01-023-3439 INTERCHANGEABLE
Transistor
5961-01-179-3469 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
MILS19500-251 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-19500/251 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JANTX2N2218A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JANTX2N2218A Adelco Elektronik Gmbh (DEU)
Related Parts
5961-00-022-4386INTERCHANGEABLE
TRANSISTOR
5961-00-050-7499INTERCHANGEABLE
TRANSISTOR
5961-00-059-4464INTERCHANGEABLE
TRANSISTOR
5961-00-436-8797INTERCHANGEABLE
TRANSISTOR
5961-00-450-6343INTERCHANGEABLE
TRANSISTOR
5961-00-457-9158INTERCHANGEABLE
TRANSISTOR
5961-00-926-2533INTERCHANGEABLE
TRANSISTOR
5961-00-949-1432INTERCHANGEABLE
TRANSISTOR
5961-01-023-3439INTERCHANGEABLE
TRANSISTOR
5961-01-179-3469INTERCHANGEABLE
TRANSISTOR
5961-01-179-3470INTERCHANGEABLE
TRANSISTOR
5961-01-214-0848INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-406-3074?

NSN 5961-00-406-3074 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 5961-00-406-3074?

NSN 5961-00-406-3074 has 4 cross-referenced part numbers: MILS19500-251 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-19500/251 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), JANTX2N2218A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), JANTX2N2218A (Adelco Elektronik Gmbh).

What NSN replaces 5961-00-406-3074?

There are 12 known substitutes for 5961-00-406-3074: 5961-00-022-4386, 5961-00-050-7499, 5961-00-059-4464 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILS19500-251?

Key specifications for MILS19500-251: Semiconductor Material: SILICON; Voltage Rating in Volts Per Characteristic: 75.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 6.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN; Features Provided: HERMETICALLY SEALED CASE; Terminal Length: 0.500 INCHES MINIMUM IN. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-406-3074 still in active supply?

NSN 5961-00-406-3074 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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