PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N3956Semiconductor Devices,unitized

National Semiconductor Corp · NSN 5961-00-436-1001 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-436-1001 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-436-1001. Primary manufacturer part number: 2N3956.
Features
  • Semiconductor Devices,unitized — FSC 5961
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-71
  • Component Name and Quantity: 2 TRANSISTOR
  • Overall Diameter: 0.230 INCHES MAXIMUM IN
  • Mounting Method: TERMINAL
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Features Provided: HERMETICALLY SEALED CASE
  • Terminal Length: 0.500 INCHES MINIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Semiconductor Devices,unitized, cataloged under National Stock Number 5961-00-436-1001, 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 National Semiconductor Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-436-1001
Primary Part Number2N3956
Item NameSemiconductor Devices,unitized
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerNational Semiconductor Corp
StatusCANCELLED
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-71
Component Name and Quantity2 TRANSISTOR
Overall Diameter0.230 INCHES MAXIMUM IN
Mounting MethodTERMINAL
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Features ProvidedHERMETICALLY SEALED CASE
Terminal Length0.500 INCHES MINIMUM IN
Semiconductor MaterialSILICON ALL TRANSISTOR
Voltage Rating in Volts Per Characteristic50.0 MAXIMUM BREAKDOWN VOLTAGE, DRAIN-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE ALL TRANSISTOR
Power Rating Per Characteristic250.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION ALL TRANSISTOR
Current Rating Per Characteristic50.00 MILLIAMPERES MAXIMUM GATE CURRENT ALL TRANSISTOR
Terminal Type and Quantity6 UNINSULATED WIRE LEAD
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5961-00-106-1264 INTERCHANGEABLE
Transistor
5961-00-139-3244 INTERCHANGEABLE
Semiconductor Devices,unitized
5961-00-465-4647 INTERCHANGEABLE
Semiconductor Devices,unitized
5360-00-913-3309 INTERCHANGEABLE
Spring,focus Return
Cross-Reference Index
Part NumberManufacturer
2N3956 National Semiconductor Corp (USA)
2N3956 Solitron Devices, Inc. (USA)
2N3956 Electronic Industries Association
148994 Northrop Grumman Systems Corporation (USA)
RELEASE5157 Electronic Industries Association
2N3956 Joint Electron Device Engineering Council
JAN2N3956 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5961-00-106-1264INTERCHANGEABLE
TRANSISTOR
5961-00-139-3244INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5961-00-465-4647INTERCHANGEABLE
SEMICONDUCTOR DEVICES,UNITIZED
5360-00-913-3309INTERCHANGEABLE
SPRING,FOCUS RETURN

Frequently Asked Questions

What is NSN 5961-00-436-1001?

NSN 5961-00-436-1001 is a Semiconductor Devices,unitized, manufactured by National Semiconductor Corp, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-436-1001?

NSN 5961-00-436-1001 has 7 cross-referenced part numbers: 2N3956 (National Semiconductor Corp), 2N3956 (Solitron Devices, Inc.), 2N3956 (Electronic Industries Association), 148994 (Northrop Grumman Systems Corporation), RELEASE5157 (Electronic Industries Association) and 2 more.

What NSN replaces 5961-00-436-1001?

There are 4 known substitutes for 5961-00-436-1001: 5961-00-106-1264, 5961-00-139-3244, 5961-00-465-4647 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N3956?

Key specifications for 2N3956: Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-71; Component Name and Quantity: 2 TRANSISTOR; Overall Diameter: 0.230 INCHES MAXIMUM IN; Mounting Method: TERMINAL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-436-1001 still in active supply?

NSN 5961-00-436-1001 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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