PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N3644Transistor

Lacon Electronic Gmbh · NSN 5961-00-103-3981 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-103-3981 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-103-3981. Primary manufacturer part number: 2N3644.
Features
  • Transistor — FSC 5961
  • Internal Configuration: JUNCTION CONTACT
  • Semiconductor Material: SILICON
  • Overall Diameter: 0.330 INCHES MAXIMUM IN
  • Current Rating Per Characteristic: 500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC
  • Maximum Operating Temp Per Measurement Point: 125.0 CELSIUS JUNCTION DEGC
  • Terminal Circle Diameter: 0.200 INCHES MAXIMUM IN
  • Voltage Rating in Volts Per Characteristic: 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Applications
  • Applications requiring Plastic Enclosure construction
General Description

The Transistor, cataloged under National Stock Number 5961-00-103-3981, 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 Lacon Electronic Gmbh. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 26 commercial cross-references from 20 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-103-3981
Primary Part Number2N3644
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerLacon Electronic Gmbh
StatusCANCELLED
Internal ConfigurationJUNCTION CONTACT
Semiconductor MaterialSILICON
Overall Diameter0.330 INCHES MAXIMUM IN
Current Rating Per Characteristic500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC
Maximum Operating Temp Per Measurement Point125.0 CELSIUS JUNCTION DEGC
Terminal Circle Diameter0.200 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
MaterialPLASTIC ENCLOSURE
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Power Rating Per Characteristic300.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Mounting MethodTERMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5961-00-062-3133 INTERCHANGEABLE
Transistor
5961-00-063-8270 INTERCHANGEABLE
Transistor
5961-00-929-2561 INTERCHANGEABLE
Transistor
5961-00-929-2857 INTERCHANGEABLE
Transistor
5961-00-967-7828 INTERCHANGEABLE
Transistor
5961-00-978-9667 INTERCHANGEABLE
Transistor
5961-01-167-3219 INTERCHANGEABLE
Transistor
6665-01-538-2853900-1638 INTERCHANGEABLE
Guard,roller Tube
Cole-Parmer Instrument Co Dba Barnant Co
5365-01-667-646518154A INTERCHANGEABLE
Bushing,sleeve
Gravois Aluminum Boats Llc Dba Metal Shark Boats Div Metal Shark
6665-01-688-0878 INTERCHANGEABLE
Guard,roller Tube
Cross-Reference Index
Part NumberManufacturer
2N3644 Lacon Electronic Gmbh (DEU)
10105 Century Data Systems (USA)
2N3644 Fairchild Semiconductor Corp (USA)
400707&05 Tally Printer Corporation (USA)
2N3644 National Semiconductor Corp (USA)
1853-0058 Hewlett-Packard Company Dba HP (USA)
151-0364 Autek Systems Corp (USA)
440024 Syqwest Llc (USA)
4804-3126-00 Anadex Inc (USA)
9001638 H & E Venture, Llc (USA)
151-364 Autek Systems Corp (USA)
151-364 Systron-Donner Corp Microwave/instrument Div (USA)
83-1530-2269 Minnesota Mining and Mfg Co Mincom Div (USA)
2N3644 Hewlett-Packard Company Dba HP (USA)
2N3644 Adelco Elektronik Gmbh (DEU)
062-024 Trilithic, Inc. (USA)
2N3644 Freescale Semiconductor, Inc. (USA)
2N3644A Adelco Elektronik Gmbh (DEU)
2N3644 Electronic Industries Association
929-2-000006 Western Reserve Electronics Inc (USA)
Related Parts
5961-00-062-3133INTERCHANGEABLE
TRANSISTOR
5961-00-063-8270INTERCHANGEABLE
TRANSISTOR
5961-00-929-2561INTERCHANGEABLE
TRANSISTOR
5961-00-929-2857INTERCHANGEABLE
TRANSISTOR
5961-00-967-7828INTERCHANGEABLE
TRANSISTOR
5961-00-978-9667INTERCHANGEABLE
TRANSISTOR
5961-01-167-3219INTERCHANGEABLE
TRANSISTOR
6665-01-538-2853INTERCHANGEABLE
GUARD,ROLLER TUBE
900-1638
5365-01-667-6465INTERCHANGEABLE
BUSHING,SLEEVE
18154A
6665-01-688-0878INTERCHANGEABLE
GUARD,ROLLER TUBE

Frequently Asked Questions

What is NSN 5961-00-103-3981?

NSN 5961-00-103-3981 is a Transistor, manufactured by Lacon Electronic Gmbh, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-103-3981?

NSN 5961-00-103-3981 has 26 cross-referenced part numbers: 2N3644 (Lacon Electronic Gmbh), 10105 (Century Data Systems), 2N3644 (Fairchild Semiconductor Corp), 400707&05 (Tally Printer Corporation), 2N3644 (National Semiconductor Corp) and 21 more.

What NSN replaces 5961-00-103-3981?

There are 10 known substitutes for 5961-00-103-3981: 5961-00-062-3133, 5961-00-063-8270, 5961-00-929-2561 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N3644?

Key specifications for 2N3644: Internal Configuration: JUNCTION CONTACT; Semiconductor Material: SILICON; Overall Diameter: 0.330 INCHES MAXIMUM IN; Current Rating Per Characteristic: 500.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MILLIAMPERES MAXIMUM EMITTER CURRENT, DC. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-103-3981 still in active supply?

NSN 5961-00-103-3981 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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