PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST125Transistor

Dne Technologies, Inc · NSN 5961-00-990-4503 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-990-4503 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-990-4503. Primary manufacturer part number: ST125.
Features
  • Transistor — FSC 5961
  • Terminal Circle Diameter: 0.200 INCHES NOMINAL IN
  • Overall Diameter: 0.370 INCHES MAXIMUM IN
  • Terminal Length: 1.500 INCHES MINIMUM IN
  • Power Rating Per Characteristic: 150.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
  • Voltage Rating in Volts Per Characteristic: -16.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND -16.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND -3.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC
  • Mounting Method: TERMINAL
  • Features Provided: HERMETICALLY SEALED CASE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-990-4503, 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 Dne Technologies, Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5961-00-990-4503
Primary Part NumberST125
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerDne Technologies, Inc
StatusACTIVE
Terminal Circle Diameter0.200 INCHES NOMINAL IN
Overall Diameter0.370 INCHES MAXIMUM IN
Terminal Length1.500 INCHES MINIMUM IN
Power Rating Per Characteristic150.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Voltage Rating in Volts Per Characteristic-16.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND -16.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND -3.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC
Mounting MethodTERMINAL
Features ProvidedHERMETICALLY SEALED CASE
Semiconductor MaterialGERMANIUM
Internal ConfigurationJUNCTION CONTACT
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Maximum Operating Temp Per Measurement Point85.0 CELSIUS JUNCTION DEGC
Current Rating Per Characteristic-100.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3120-00-288-5054018601-5 INTERCHANGEABLE
Bearing,sleeve
Sea Cure Technology, Inc
2815-00-362-2042ST125 INTERCHANGEABLE
Fixture
Cummins Inc.
5975-00-839-61585235 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
40001125-000 Dne Technologies, Inc (USA)
ST125 PRIMARY Dne Technologies, Inc (USA)
Related Parts
3120-00-288-5054INTERCHANGEABLE
BEARING,SLEEVE
018601-5
2815-00-362-2042INTERCHANGEABLE
FIXTURE
ST125
5975-00-839-6158INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5235

Frequently Asked Questions

What is NSN 5961-00-990-4503?

NSN 5961-00-990-4503 is a Transistor, manufactured by Dne Technologies, Inc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-990-4503?

NSN 5961-00-990-4503 has 2 cross-referenced part numbers: 40001125-000 (Dne Technologies, Inc), ST125 (Dne Technologies, Inc).

What NSN replaces 5961-00-990-4503?

There are 3 known substitutes for 5961-00-990-4503: 3120-00-288-5054, 2815-00-362-2042, 5975-00-839-6158. Verify interchangeability with system specifications before substitution.

What are the specifications of ST125?

Key specifications for ST125: Terminal Circle Diameter: 0.200 INCHES NOMINAL IN; Overall Diameter: 0.370 INCHES MAXIMUM IN; Terminal Length: 1.500 INCHES MINIMUM IN; Power Rating Per Characteristic: 150.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION. 15 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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