PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N3721Transistor

Sprague Electric Co World Hqs · NSN 5961-00-959-4920 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-959-4920 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-959-4920. Primary manufacturer part number: 2N3721.
Features
  • Transistor — FSC 5961
  • Power Rating Per Characteristic: 200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Terminal Circle Diameter: 0.095 INCHES NOMINAL IN
  • Mounting Method: TERMINAL
  • Overall Diameter: 0.205 INCHES MAXIMUM IN
  • Voltage Rating in Volts Per Characteristic: 18.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 18.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
  • Terminal Length: 0.500 INCHES MINIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-959-4920, 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 Sprague Electric Co World Hqs. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-959-4920
Primary Part Number2N3721
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSprague Electric Co World Hqs
StatusACTIVE
Power Rating Per Characteristic200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Terminal Circle Diameter0.095 INCHES NOMINAL IN
Mounting MethodTERMINAL
Overall Diameter0.205 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic18.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 18.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Terminal Length0.500 INCHES MINIMUM IN
Internal ConfigurationJUNCTION CONTACT
Semiconductor MaterialSILICON
Specification/standard Data80131-RELEASE5060 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
Features ProvidedHERMETICALLY SEALED CASE
Current Rating Per Characteristic100.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-008-2097117267 INTERCHANGEABLE
Washer,flat
Cummins Inc.
5961-00-479-1347 INTERCHANGEABLE
Transistor
5985-01-008-3578128SCAV650-1 INTERCHANGEABLE
Waveguide Assembly
Northrop Grumman Systems Corporation
6640-01-250-1925 INTERCHANGEABLE
Pipet,nonvolumetric
Cross-Reference Index
Part NumberManufacturer
2N3721 Sprague Electric Co World Hqs (USA)
2N3721A Lacon Electronic Gmbh (DEU)
RELEASE5060 Electronic Industries Association
2N3721 British Sarozal Ltd (GBR)
2N3712 General Electric Co Semi-Conductor Products Dept Power Components Opn (USA)
2N3721 Electronic Industries Association
2N3721 Csr Industries Inc (USA)
2N3721A Adelco Elektronik Gmbh (DEU)
117267 Fluke Corp (USA)
2N3721 General Electric Co Semi-Conductor Products Dept (USA)
2N3721 National Semiconductor Corp (USA)
4805-117267 Fluke Corp (USA)
Related Parts
5310-00-008-2097INTERCHANGEABLE
WASHER,FLAT
117267
5961-00-479-1347INTERCHANGEABLE
TRANSISTOR
5985-01-008-3578INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
128SCAV650-1
6640-01-250-1925INTERCHANGEABLE
PIPET,NONVOLUMETRIC

Frequently Asked Questions

What is NSN 5961-00-959-4920?

NSN 5961-00-959-4920 is a Transistor, manufactured by Sprague Electric Co World Hqs, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-959-4920?

NSN 5961-00-959-4920 has 12 cross-referenced part numbers: 2N3721 (Sprague Electric Co World Hqs), 2N3721A (Lacon Electronic Gmbh), RELEASE5060 (Electronic Industries Association), 2N3721 (British Sarozal Ltd), 2N3712 (General Electric Co Semi-Conductor Products Dept Power Components Opn) and 7 more.

What NSN replaces 5961-00-959-4920?

There are 4 known substitutes for 5961-00-959-4920: 5310-00-008-2097, 5961-00-479-1347, 5985-01-008-3578 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N3721?

Key specifications for 2N3721: Power Rating Per Characteristic: 200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD; Special Features: JUNCTION PATTERN ARRANGEMENT: NPN; Terminal Circle Diameter: 0.095 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com