PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N551Transistor

Electronic Industries Association · NSN 5961-00-686-6968 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-686-6968 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-686-6968. Primary manufacturer part number: 2N551.
Features
  • Transistor — FSC 5961
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Power Rating Per Characteristic: 600.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Terminal Length: 1.500 INCHES MINIMUM IN
  • Semiconductor Material: SILICON
  • Mounting Method: TERMINAL
  • Overall Diameter: 0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
  • Internal Configuration: JUNCTION CONTACT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-686-6968, 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 Electronic Industries Association. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-686-6968
Primary Part Number2N551
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerElectronic Industries Association
StatusACTIVE
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Power Rating Per Characteristic600.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Terminal Length1.500 INCHES MINIMUM IN
Semiconductor MaterialSILICON
Mounting MethodTERMINAL
Overall Diameter0.335 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
Internal ConfigurationJUNCTION CONTACT
Terminal Circle Diameter0.200 INCHES NOMINAL IN
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Current Rating Per Characteristic200.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 MICROAMPERES MAXIMUM COLLECTOR CUTOFF CURRENT, DC, EMITTER OPEN
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 6.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5961-00-688-9006 INTERCHANGEABLE
Transistor
5961-00-716-7714 INTERCHANGEABLE
Transistor
5961-00-809-1871 INTERCHANGEABLE
Transistor
5961-00-821-5671 INTERCHANGEABLE
Transistor
5961-00-881-3416 INTERCHANGEABLE
Transistor
5961-00-950-7867 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
2N551 Electronic Industries Association
2N551 Gilbert Engineering Co Inc/incon Sub of Transitron Electronic Corp (USA)
RELEASE3376 Electronic Industries Association
Related Parts
5961-00-688-9006INTERCHANGEABLE
TRANSISTOR
5961-00-716-7714INTERCHANGEABLE
TRANSISTOR
5961-00-809-1871INTERCHANGEABLE
TRANSISTOR
5961-00-821-5671INTERCHANGEABLE
TRANSISTOR
5961-00-881-3416INTERCHANGEABLE
TRANSISTOR
5961-00-950-7867INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-686-6968?

NSN 5961-00-686-6968 is a Transistor, manufactured by Electronic Industries Association, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-686-6968?

NSN 5961-00-686-6968 has 3 cross-referenced part numbers: 2N551 (Electronic Industries Association), 2N551 (Gilbert Engineering Co Inc/incon Sub of Transitron Electronic Corp), RELEASE3376 (Electronic Industries Association).

What NSN replaces 5961-00-686-6968?

There are 6 known substitutes for 5961-00-686-6968: 5961-00-688-9006, 5961-00-716-7714, 5961-00-809-1871 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N551?

Key specifications for 2N551: Overall Length: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD; Power Rating Per Characteristic: 600.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION; Terminal Length: 1.500 INCHES MINIMUM IN. 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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