PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N4858ATransistor

Freescale Semiconductor, Inc. · NSN 5961-00-476-6663 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-476-6663 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-476-6663. Primary manufacturer part number: 2N4858A.
Features
  • Transistor — FSC 5961
  • Maximum Operating Temp Per Measurement Point: 125.0 CELSIUS AMBIENT AIR DEGC
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Semiconductor Material: SILICON
  • Mounting Method: TERMINAL
  • Features Provided: HERMETICALLY SEALED CASE
  • Internal Configuration: FIELD EFFECT
  • Current Rating Per Characteristic: 50.00 MILLIAMPERES MAXIMUM GATE CURRENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-476-6663, 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 Freescale Semiconductor, Inc.. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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
NSN5961-00-476-6663
Primary Part Number2N4858A
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerFreescale Semiconductor, Inc.
StatusACTIVE
Maximum Operating Temp Per Measurement Point125.0 CELSIUS AMBIENT AIR DEGC
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Semiconductor MaterialSILICON
Mounting MethodTERMINAL
Features ProvidedHERMETICALLY SEALED CASE
Internal ConfigurationFIELD EFFECT
Current Rating Per Characteristic50.00 MILLIAMPERES MAXIMUM GATE CURRENT
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Power Rating Per Characteristic360.0 MILLIWATTS MAXIMUM TOTAL DEVICE DISSIPATION
Overall Diameter0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic-40.0 MAXIMUM GATE TO SOURCE VOLTAGE AND 40.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 40.0 MAXIMUM DRAIN TO GATE VOLTAGE
Terminal Length0.500 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5961-00-177-3356 INTERCHANGEABLE
Transistor
5961-00-243-9159 INTERCHANGEABLE
Transistor
5961-00-403-4293911416-3 INTERCHANGEABLE
Transistor
Bae Systems Information and Electronic Systems Integration Inc.
5961-01-207-6542B4028184 INTERCHANGEABLE
Transistor
Department of the Army Hq United States Army Communications Research and Development Command
Cross-Reference Index
Part NumberManufacturer
2N4858A Freescale Semiconductor, Inc. (USA)
2539507 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
2N4858A Texas Instruments Incorporated (USA)
2N4858AA Adelco Elektronik Gmbh (DEU)
AM0929416 Rohde & Schwarz Gmbh & Co. Kommanditgesellschaft Dba R & S (DEU)
Related Parts
5961-00-177-3356INTERCHANGEABLE
TRANSISTOR
5961-00-243-9159INTERCHANGEABLE
TRANSISTOR
5961-00-403-4293INTERCHANGEABLE
TRANSISTOR
911416-3
5961-01-207-6542INTERCHANGEABLE
TRANSISTOR
B4028184

Frequently Asked Questions

What is NSN 5961-00-476-6663?

NSN 5961-00-476-6663 is a Transistor, manufactured by Freescale Semiconductor, Inc., classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-476-6663?

NSN 5961-00-476-6663 has 5 cross-referenced part numbers: 2N4858A (Freescale Semiconductor, Inc.), 2539507 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2N4858A (Texas Instruments Incorporated), 2N4858AA (Adelco Elektronik Gmbh), AM0929416 (Rohde & Schwarz Gmbh & Co. Kommanditgesellschaft Dba R & S).

What NSN replaces 5961-00-476-6663?

There are 4 known substitutes for 5961-00-476-6663: 5961-00-177-3356, 5961-00-243-9159, 5961-00-403-4293 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N4858A?

Key specifications for 2N4858A: Maximum Operating Temp Per Measurement Point: 125.0 CELSIUS AMBIENT AIR DEGC; Overall Length: 0.170 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN; Terminal Circle Diameter: 0.100 INCHES NOMINAL IN; Semiconductor Material: SILICON. 13 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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