PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

U401Transistor

Siliconix Incorporated Div Siliconix · NSN 5961-01-410-2856 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-410-2856 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-410-2856. Primary manufacturer part number: U401.
Features
  • Transistor — FSC 5961
  • Terminal Type and Quantity: 6 UNINSULATED WIRE LEAD
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-71
  • Voltage Rating in Volts Per Characteristic: -2.5 MAXIMUM GATE TO SOURCE CUTOFF VOLTAGE
  • Mounting Method: TERMINAL
  • Internal Configuration: FIELD EFFECT-DUAL GATE
  • Semiconductor Material: SILICON
  • 4 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-410-2856, 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 Siliconix Incorporated Div Siliconix. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-410-2856
Primary Part NumberU401
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSiliconix Incorporated Div Siliconix
StatusACTIVE
Terminal Type and Quantity6 UNINSULATED WIRE LEAD
Joint Electronic Device Engineering Council/jedec/case Outline DesignationTO-71
Voltage Rating in Volts Per Characteristic-2.5 MAXIMUM GATE TO SOURCE CUTOFF VOLTAGE
Mounting MethodTERMINAL
Internal ConfigurationFIELD EFFECT-DUAL GATE
Semiconductor MaterialSILICON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6625-00-618-9192648 INTERCHANGEABLE
Bolometer,radio Frequency
Telephonics Corp/prd Instruments
Cross-Reference Index
Part NumberManufacturer
45619445 Thales Underwater Systems SAS (FRA)
45619445 Thales Dms France SAS (FRA)
U401 PRIMARY Siliconix Incorporated Div Siliconix (USA)
91464446 Thales Sa (FRA)
Related Parts
6625-00-618-9192INTERCHANGEABLE
BOLOMETER,RADIO FREQUENCY
648

Frequently Asked Questions

What is NSN 5961-01-410-2856?

NSN 5961-01-410-2856 is a Transistor, manufactured by Siliconix Incorporated Div Siliconix, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-410-2856?

NSN 5961-01-410-2856 has 4 cross-referenced part numbers: 45619445 (Thales Underwater Systems SAS), 45619445 (Thales Dms France SAS), U401 (Siliconix Incorporated Div Siliconix), 91464446 (Thales Sa).

What NSN replaces 5961-01-410-2856?

There is 1 known substitute for 5961-01-410-2856: 6625-00-618-9192. Verify interchangeability with system specifications before substitution.

What are the specifications of U401?

Key specifications for U401: Terminal Type and Quantity: 6 UNINSULATED WIRE LEAD; End Item Identification: 6625-01-363-6212 MULTIMETER; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-71; Voltage Rating in Volts Per Characteristic: -2.5 MAXIMUM GATE TO SOURCE CUTOFF VOLTAGE. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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