PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N3866Transistor

L3 Technologies, Inc. Div L3 Telemetry & Rf Products · NSN 5961-00-486-6181 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-486-6181 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-486-6181. Primary manufacturer part number: 2N3866.
Features
  • Transistor — FSC 5961
  • Power Rating Per Characteristic: 5.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Terminal Length: 0.500 INCHES MINIMUM IN
  • Current Rating Per Characteristic: 400.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Semiconductor Material: SILICON
  • Internal Configuration: JUNCTION CONTACT
  • Overall Diameter: 0.359 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-486-6181, 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 L3 Technologies, Inc. Div L3 Telemetry & Rf Products. Government technical data includes 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-486-6181
Primary Part Number2N3866
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Telemetry & Rf Products
StatusACTIVE
Power Rating Per Characteristic5.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Terminal Length0.500 INCHES MINIMUM IN
Current Rating Per Characteristic400.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Semiconductor MaterialSILICON
Internal ConfigurationJUNCTION CONTACT
Overall Diameter0.359 INCHES NOMINAL IN
Voltage Rating in Volts Per Characteristic55.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 30.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 3.5 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Terminal Circle Diameter0.200 INCHES NOMINAL IN
Mounting MethodTERMINAL
Internal Junction ConfigurationNPN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-062-2075 INTERCHANGEABLE
Transistor
5961-00-096-1926536157-1 INTERCHANGEABLE
Transistor
Raytheon Company Dba Raytheon
5961-00-168-8389958-033-0003 INTERCHANGEABLE
Semiconductor Device Set
Northrop Grumman Systems Corporation
5961-00-450-1124SM-A-696868-5 INTERCHANGEABLE
Transistor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5961-00-469-9896352-0671-011 INTERCHANGEABLE
Transistor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5961-00-485-8781 INTERCHANGEABLE
Transistor
5961-00-548-1894151-0446-00 INTERCHANGEABLE
Transistor
Tektronix, Inc.
5961-00-627-0276 INTERCHANGEABLE
Transistor
5961-00-759-8867 INTERCHANGEABLE
Transistor
5961-00-896-6014 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
2N3866 Adelco Elektronik Gmbh (DEU)
6927D173 Cpi Electron Device Business, Inc. (USA)
2N3866A Adelco Elektronik Gmbh (DEU)
2N3866 PRIMARY L3 Technologies, Inc. Div L3 Telemetry & Rf Products (USA)
6927D173 Communications & Power Industries International Inc. Zweigniederlassung Ismaning (DEU)
2N3866 Lacon Electronic Gmbh (DEU)
Related Parts
5961-00-062-2075INTERCHANGEABLE
TRANSISTOR
5961-00-096-1926INTERCHANGEABLE
TRANSISTOR
536157-1
5961-00-168-8389INTERCHANGEABLE
SEMICONDUCTOR DEVICE SET
958-033-0003
5961-00-450-1124INTERCHANGEABLE
TRANSISTOR
SM-A-696868-5
5961-00-469-9896INTERCHANGEABLE
TRANSISTOR
352-0671-011
5961-00-485-8781INTERCHANGEABLE
TRANSISTOR
5961-00-548-1894INTERCHANGEABLE
TRANSISTOR
151-0446-00
5961-00-627-0276INTERCHANGEABLE
TRANSISTOR
5961-00-759-8867INTERCHANGEABLE
TRANSISTOR
5961-00-896-6014INTERCHANGEABLE
TRANSISTOR
5961-00-931-7028INTERCHANGEABLE
TRANSISTOR
5961-00-954-4864INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-486-6181?

NSN 5961-00-486-6181 is a Transistor, manufactured by L3 Technologies, Inc. Div L3 Telemetry & Rf Products, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-486-6181?

NSN 5961-00-486-6181 has 6 cross-referenced part numbers: 2N3866 (Adelco Elektronik Gmbh), 6927D173 (Cpi Electron Device Business, Inc.), 2N3866A (Adelco Elektronik Gmbh), 2N3866 (L3 Technologies, Inc. Div L3 Telemetry & Rf Products), 6927D173 (Communications & Power Industries International Inc. Zweigniederlassung Ismaning) and 1 more.

What NSN replaces 5961-00-486-6181?

There are 12 known substitutes for 5961-00-486-6181: 5961-00-062-2075, 5961-00-096-1926, 5961-00-168-8389 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N3866?

Key specifications for 2N3866: Power Rating Per Characteristic: 5.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD; Terminal Length: 0.500 INCHES MINIMUM IN; Current Rating Per Characteristic: 400.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC. 12 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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