PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PN4143Transistor

Fairchild Semiconductor Corp · NSN 5961-00-419-7804 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-419-7804 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-419-7804. Primary manufacturer part number: PN4143.
Features
  • Transistor — FSC 5961
  • Overall Diameter: 0.330 INCHES NOMINAL IN
  • Terminal Length: 0.400 INCHES MINIMUM IN
  • Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
  • Power Rating Per Characteristic: 300.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Internal Configuration: JUNCTION CONTACT
  • Semiconductor Material: SILICON
  • Maximum Operating Temp Per Measurement Point: 125.0 CELSIUS JUNCTION DEGC
Applications
  • Applications requiring Plastic Enclosure construction
General Description

The Transistor, cataloged under National Stock Number 5961-00-419-7804, 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 Fairchild Semiconductor Corp. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-419-7804
Primary Part NumberPN4143
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerFairchild Semiconductor Corp
StatusCANCELLED
Overall Diameter0.330 INCHES NOMINAL IN
Terminal Length0.400 INCHES MINIMUM IN
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Power Rating Per Characteristic300.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Internal ConfigurationJUNCTION CONTACT
Semiconductor MaterialSILICON
Maximum Operating Temp Per Measurement Point125.0 CELSIUS JUNCTION DEGC
Mounting MethodTERMINAL
Terminal Circle Diameter0.100 INCHES MAXIMUM IN
Current Rating Per Characteristic200.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
MaterialPLASTIC ENCLOSURE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5961-00-419-7803 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
2N4143 Telcom Semiconductor Inc (USA)
RELEASE5301 Electronic Industries Association
2N4143 General Semiconductor Inc (USA)
2N4143 Electronic Industries Association
PN4143 National Semiconductor Corporation (USA)
PN4143 PRIMARY Fairchild Semiconductor Corp (USA)
Related Parts
5961-00-419-7803INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-419-7804?

NSN 5961-00-419-7804 is a Transistor, manufactured by Fairchild Semiconductor Corp, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-419-7804?

NSN 5961-00-419-7804 has 6 cross-referenced part numbers: 2N4143 (Telcom Semiconductor Inc), RELEASE5301 (Electronic Industries Association), 2N4143 (General Semiconductor Inc), 2N4143 (Electronic Industries Association), PN4143 (National Semiconductor Corporation) and 1 more.

What NSN replaces 5961-00-419-7804?

There is 1 known substitute for 5961-00-419-7804: 5961-00-419-7803. Verify interchangeability with system specifications before substitution.

What are the specifications of PN4143?

Key specifications for PN4143: Overall Diameter: 0.330 INCHES NOMINAL IN; Terminal Length: 0.400 INCHES MINIMUM IN; Special Features: JUNCTION PATTERN ARRANGEMENT: PNP; Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 40.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-419-7804 still in active supply?

NSN 5961-00-419-7804 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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