PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121G3359-1-1Transistor

Herley Chicago Dba Stewart Warner Electronics · NSN 5961-00-499-7251 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-499-7251 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-499-7251. Primary manufacturer part number: 121G3359-1-1.
Features
  • Transistor — FSC 5961
  • Current Rating Per Characteristic: 4.00 AMPERES MAXIMUM BASE CURRENT, DC AND 10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
  • Voltage Rating in Volts Per Characteristic: 100.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 7.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
  • Semiconductor Material: SILICON
  • Electrode Internally-Electrically Connected to Case: COLLECTOR
  • Power Rating Per Characteristic: 85.7 WATTS MAXIMUM TOTAL POWER DISSIPATION
  • Internal Configuration: JUNCTION CONTACT
  • Terminal Type and Quantity: 2 PIN AND 1 CASE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-499-7251, 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 Herley Chicago Dba Stewart Warner Electronics. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 28 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5961-00-499-7251
Primary Part Number121G3359-1-1
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerHerley Chicago Dba Stewart Warner Electronics
StatusCANCELLED
Current Rating Per Characteristic4.00 AMPERES MAXIMUM BASE CURRENT, DC AND 10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC
Voltage Rating in Volts Per Characteristic100.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 7.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
Semiconductor MaterialSILICON
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Power Rating Per Characteristic85.7 WATTS MAXIMUM TOTAL POWER DISSIPATION
Internal ConfigurationJUNCTION CONTACT
Terminal Type and Quantity2 PIN AND 1 CASE
Mounting MethodUNTHREADED HOLE(S)
Specification/standard Data81349-MIL-S-19500/408 GOVERNMENT SPECIFICATION
Test Data Document81349-MIL-S-19500 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Mounting Facility Quantity2
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5961-00-001-9294 INTERCHANGEABLE
Transistor
5961-00-175-4921 INTERCHANGEABLE
Semiconductor Device Set
5961-00-192-6720 INTERCHANGEABLE
Transistor
5961-00-235-3226 INTERCHANGEABLE
Transistor
5961-00-241-9271 INTERCHANGEABLE
Transistor
5961-00-245-6510 INTERCHANGEABLE
Transistor
5961-00-314-10562N3715 INTERCHANGEABLE
Transistor
Freescale Semiconductor, Inc.
5961-00-400-9108110C175 INTERCHANGEABLE
Transistor
Avionics Specialties, Inc.
5961-00-403-099863A133593P15 INTERCHANGEABLE
Transistor
Lockheed Martin Corporation Div Rotary and Mission Systems
5961-00-416-4859 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
121G3359-1-1 Herley Chicago Dba Stewart Warner Electronics (USA)
808137-2 Raytheon Company Dba Raytheon (USA)
16126-017 Dynalec Corporation (USA)
014-J3716 L3harris Maritime Power & Energy Solutions, Inc (USA)
352-7500-801 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
SJ1744H Freescale Semiconductor, Inc. (USA)
TX2N3716 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
JAN2N3716 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4172983P1 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
6004033 Meggitt Aircraft Braking Systems Corporation (USA)
396205-3 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
2N3715 Joint Electron Device Engineering Council
MIL-PRF-19500/408 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2064262 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
SJ3997H Freescale Semiconductor, Inc. (USA)
2859655 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
JAN2N3716 Texas Instruments Incorporated (USA)
2N3716 Freescale Semiconductor, Inc. (USA)
324-990049-292 Cmc Electronics Inc (CAN)
352-7500-801 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
Related Parts
5961-00-001-9294INTERCHANGEABLE
TRANSISTOR
5961-00-175-4921INTERCHANGEABLE
SEMICONDUCTOR DEVICE SET
5961-00-192-6720INTERCHANGEABLE
TRANSISTOR
5961-00-235-3226INTERCHANGEABLE
TRANSISTOR
5961-00-241-9271INTERCHANGEABLE
TRANSISTOR
5961-00-245-6510INTERCHANGEABLE
TRANSISTOR
5961-00-314-1056INTERCHANGEABLE
TRANSISTOR
2N3715
5961-00-400-9108INTERCHANGEABLE
TRANSISTOR
110C175
5961-00-403-0998INTERCHANGEABLE
TRANSISTOR
63A133593P15
5961-00-416-4859INTERCHANGEABLE
TRANSISTOR
5961-00-417-8047INTERCHANGEABLE
TRANSISTOR
5961-00-466-0840INTERCHANGEABLE
TRANSISTOR
2N3716

Frequently Asked Questions

What is NSN 5961-00-499-7251?

NSN 5961-00-499-7251 is a Transistor, manufactured by Herley Chicago Dba Stewart Warner Electronics, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-499-7251?

NSN 5961-00-499-7251 has 50 cross-referenced part numbers: 121G3359-1-1 (Herley Chicago Dba Stewart Warner Electronics), 808137-2 (Raytheon Company Dba Raytheon), 16126-017 (Dynalec Corporation), 014-J3716 (L3harris Maritime Power & Energy Solutions, Inc), 352-7500-801 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems) and 45 more.

What NSN replaces 5961-00-499-7251?

There are 12 known substitutes for 5961-00-499-7251: 5961-00-001-9294, 5961-00-175-4921, 5961-00-192-6720 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 121G3359-1-1?

Key specifications for 121G3359-1-1: Current Rating Per Characteristic: 4.00 AMPERES MAXIMUM BASE CURRENT, DC AND 10.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC; Voltage Rating in Volts Per Characteristic: 100.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 80.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 7.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Semiconductor Material: SILICON; Overall Height: 0.270 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-499-7251 still in active supply?

NSN 5961-00-499-7251 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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