PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99240-290Semiconductor Devices,unitized

Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin · NSN 5961-00-104-8378 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-104-8378 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-104-8378. Primary manufacturer part number: 99240-290.
Features
  • Semiconductor Devices,unitized — FSC 5961
  • Component Name and Quantity: 2 TRANSISTOR
  • Terminal Length: 0.500 INCHES MINIMUM IN
  • Terminal Circle Diameter: 0.200 INCHES NOMINAL IN
  • Mounting Method: TERMINAL
  • Features Provided: QUALITY ASSURANCE LEVEL TX
  • Overall Diameter: 0.370 INCHES MAXIMUM IN
  • Specification/standard Data: 81349-MIL-PRF-19500/355A GOVERNMENT SPECIFICATION A
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Semiconductor Devices,unitized, cataloged under National Stock Number 5961-00-104-8378, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 9 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
NSN5961-00-104-8378
Primary Part Number99240-290
Item NameSemiconductor Devices,unitized
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin
StatusCANCELLED
Component Name and Quantity2 TRANSISTOR
Terminal Length0.500 INCHES MINIMUM IN
Terminal Circle Diameter0.200 INCHES NOMINAL IN
Mounting MethodTERMINAL
Features ProvidedQUALITY ASSURANCE LEVEL TX
Overall Diameter0.370 INCHES MAXIMUM IN
Specification/standard Data81349-MIL-PRF-19500/355A GOVERNMENT SPECIFICATION A
Power Rating Per Characteristic500.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION ALL TRANSISTOR
Test Data Document81349-MIL-PRF-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 Characteristic30.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC ALL TRANSISTOR
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Terminal Type and Quantity6 UNINSULATED WIRE LEAD
Voltage Rating in Volts Per Characteristic70.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN AND 60.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN ALL TRANSISTOR
Semiconductor MaterialSILICON ALL TRANSISTOR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5961-00-098-7816 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-170-9887 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-179-4366 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-403-4235 INTERCHANGEABLE
Semiconductor Devic
5961-00-494-6091 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-781-3328 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-901-2859 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-905-1106 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-928-5687 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-949-7342 INTERCHANGEABLE
Semiconductor Devices,unitized
Cross-Reference Index
Part NumberManufacturer
99240-290 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
27489-1 Te Connectivity Corporation (USA)
MIL-S-19500/355A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
418901-1 Raytheon Company Dba Raytheon (USA)
MIL-PRF-19500/355A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
352250008727 Thales Nederland (NLD)
703PS42-11 Bae Systems Maritime Services (GBR)
JANTX2920 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILS19500-316 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2N2920 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2N2916 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5961PL0942005 Jednolity Indeks Materialowy - Uniform Material Index (POL)
352-7500-680 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MIL-PRF-19500/355 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN2N2920 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN2N2642 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN2N2642A Adelco Elektronik Gmbh (DEU)
Related Parts
5961-00-098-7816INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-170-9887INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-179-4366INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-403-4235INTERCHANGEABLE
SEMICONDUCTOR DEVIC
5961-00-494-6091INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-781-3328INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-901-2859INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-905-1106INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-928-5687INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-949-7342INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-01-023-6063INTERCHANGEABLE
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Frequently Asked Questions

What is NSN 5961-00-104-8378?

NSN 5961-00-104-8378 is a Semiconductor Devices,unitized, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-104-8378?

NSN 5961-00-104-8378 has 17 cross-referenced part numbers: 99240-290 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 27489-1 (Te Connectivity Corporation), MIL-S-19500/355A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 418901-1 (Raytheon Company Dba Raytheon), MIL-PRF-19500/355A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 12 more.

What NSN replaces 5961-00-104-8378?

There are 12 known substitutes for 5961-00-104-8378: 5961-00-098-7816, 5961-00-170-9887, 5961-00-179-4366 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 99240-290?

Key specifications for 99240-290: Component Name and Quantity: 2 TRANSISTOR; Terminal Length: 0.500 INCHES MINIMUM IN; Terminal Circle Diameter: 0.200 INCHES NOMINAL IN; Mounting Method: TERMINAL. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-104-8378 still in active supply?

NSN 5961-00-104-8378 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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