PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SMB653437-1Transistor

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 5961-00-261-7066 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-261-7066 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-261-7066. Primary manufacturer part number: SMB653437-1.
Features
  • Transistor — FSC 5961
  • Electrode Internally-Electrically Connected to Case: COLLECTOR
  • Mounting Method: TERMINAL
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
  • Overall Diameter: 0.230 INCHES MAXIMUM IN
  • Features Provided: HERMETICALLY SEALED CASE
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Current Rating Per Characteristic: 800.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-261-7066, 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 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-261-7066
Primary Part NumberSMB653437-1
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Mounting MethodTERMINAL
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Overall Diameter0.230 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED CASE
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Current Rating Per Characteristic800.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Semiconductor MaterialSILICON
Terminal Length0.500 INCHES MINIMUM IN
Internal ConfigurationJUNCTION CONTACT
Power Rating Per Characteristic500.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 30.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 10.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5961-00-226-8583 INTERCHANGEABLE
Transistor
5961-00-261-7067SMB653437-2 INTERCHANGEABLE
Transistor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5961-00-944-9810 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
SMB653437-1 Raytheon Company (USA)
2N2221 Raytheon Company Dba Raytheon Co (USA)
2N2221 Freescale Semiconductor, Inc. (USA)
SMB653437-1 Fairchild Semiconductor Corp (USA)
SMB653437-1 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
2N2221 Texas Instruments Incorporated (USA)
SMB653437-1 Raytheon Company Div Corp (USA)
SMB653437-1 Freescale Semiconductor, Inc. (USA)
SMB653437-1 On Semiconductor Corporation (USA)
SMB653437-1 Texas Instruments Incorporated (USA)
2N2221 Raytheon Company Div Corp (USA)
SMB653437-1 Raytheon Company Dba Raytheon Co (USA)
2N2221 Fairchild Semiconductor Corp (USA)
Related Parts
5961-00-226-8583INTERCHANGEABLE
TRANSISTOR
5961-00-261-7067INTERCHANGEABLE
TRANSISTOR
SMB653437-2
5961-00-944-9810INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 5961-00-261-7066?

NSN 5961-00-261-7066 is a Transistor, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-261-7066?

NSN 5961-00-261-7066 has 13 cross-referenced part numbers: SMB653437-1 (Raytheon Company), 2N2221 (Raytheon Company Dba Raytheon Co), 2N2221 (Freescale Semiconductor, Inc.), SMB653437-1 (Fairchild Semiconductor Corp), SMB653437-1 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir) and 8 more.

What NSN replaces 5961-00-261-7066?

There are 3 known substitutes for 5961-00-261-7066: 5961-00-226-8583, 5961-00-261-7067, 5961-00-944-9810. Verify interchangeability with system specifications before substitution.

What are the specifications of SMB653437-1?

Key specifications for SMB653437-1: Electrode Internally-Electrically Connected to Case: COLLECTOR; Mounting Method: TERMINAL; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Overall Diameter: 0.230 INCHES MAXIMUM IN. 15 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com