PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1203-75Transistor

Bae Systems Information and Electronic Systems Integration Inc. · NSN 5961-00-421-2994 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-421-2994 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-421-2994. Primary manufacturer part number: 1203-75.
Features
  • Transistor — FSC 5961
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Mounting Method: TERMINAL
  • Criticality Code Justification: FEAT
  • Internal Configuration: JUNCTION CONTACT
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Overall Diameter: 0.220 INCHES NOMINAL IN
  • Voltage Rating in Volts Per Characteristic: 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-00-421-2994, 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 Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 22 commercial cross-references from 16 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
NSN5961-00-421-2994
Primary Part Number1203-75
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusCANCELLED
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Mounting MethodTERMINAL
Criticality Code JustificationFEAT
Internal ConfigurationJUNCTION CONTACT
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Overall Diameter0.220 INCHES NOMINAL IN
Voltage Rating in Volts Per Characteristic45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 45.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 5.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Power Rating Per Characteristic400.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
Features ProvidedHERMETICALLY SEALED CASE
Terminal Length0.500 INCHES MINIMUM IN
Semiconductor MaterialSILICON
Current Rating Per Characteristic600.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5961-00-022-5666 INTERCHANGEABLE
Transistor
5961-00-103-7769 INTERCHANGEABLE
Transistor
5961-00-165-2598 INTERCHANGEABLE
Transistor
5961-00-532-156667A30A146 INTERCHANGEABLE
Transistor
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5310-00-584-5005 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-761-6882 INTERCHANGEABLE
Nut,plain,hexagon
5310-00-838-2025 INTERCHANGEABLE
Nut,plain,hexagon
5961-00-931-82492N3503 INTERCHANGEABLE
Transistor
Semitronics Corp
5961-00-954-06262N3502 INTERCHANGEABLE
Transistor
Fairchild Semiconductor Corp
5961-01-019-4947 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
RELEASE4802 Electronic Industries Association
TS2708 Itt Semiconductors Div (USA)
2N3504 National Semiconductor Corp (USA)
2N3504 Fairchild Semiconductor Corp (USA)
STI-1311 Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA)
NS2628 National Semiconductor Corp (USA)
G492096-644 Raytheon Company Div Corp (USA)
014-858 Ampex Data Systems Corporation Dba Ampex Intelligent Systems (USA)
1203-75 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. (USA)
2N3504 Electronic Industries Association
1203-75 Hybrid Semiconductors & Electronics Inc Dba Hybrid Semi Conductors & Electronics (USA)
2N3504 Osi Optoelectronics, Inc Dba Semicoa (USA)
2N3504 Texas Instruments Incorporated (USA)
1203-75 Wircon Electronics Co Inc (USA)
H037939 Fairchild Semiconductor Corp (USA)
JANTX2N2907A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NS63541 National Semiconductor Corp (USA)
NSA2583 Microsemi Corp - Massachusetts (USA)
2N3504 Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA)
2N3504 Motorola Inc (USA)
Related Parts
5961-00-022-5666INTERCHANGEABLE
TRANSISTOR
5961-00-103-7769INTERCHANGEABLE
TRANSISTOR
5961-00-165-2598INTERCHANGEABLE
TRANSISTOR
5961-00-532-1566INTERCHANGEABLE
TRANSISTOR
67A30A146
5310-00-584-5005INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-761-6882INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5310-00-838-2025INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5961-00-931-8249INTERCHANGEABLE
TRANSISTOR
2N3503
5961-00-954-0626INTERCHANGEABLE
TRANSISTOR
2N3502
5961-01-019-4947INTERCHANGEABLE
TRANSISTOR
5961-01-294-5795INTERCHANGEABLE
TRANSISTOR
5497124-3
2540-01-357-5725INTERCHANGEABLE
SUPPORT,SEAT,VEHICULAR
AT180

Frequently Asked Questions

What is NSN 5961-00-421-2994?

NSN 5961-00-421-2994 is a Transistor, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-00-421-2994?

NSN 5961-00-421-2994 has 22 cross-referenced part numbers: RELEASE4802 (Electronic Industries Association), TS2708 (Itt Semiconductors Div), 2N3504 (National Semiconductor Corp), 2N3504 (Fairchild Semiconductor Corp), STI-1311 (Semiconductor Technology, Inc. Dba Semiconductor Technology Inc) and 17 more.

What NSN replaces 5961-00-421-2994?

There are 12 known substitutes for 5961-00-421-2994: 5961-00-022-5666, 5961-00-103-7769, 5961-00-165-2598 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1203-75?

Key specifications for 1203-75: Terminal Circle Diameter: 0.100 INCHES NOMINAL IN; Special Features: WEAPON SYSTEM ESSENTIAL; JUNCTION PATTERN ARRANGEMENT: PNP; Mounting Method: TERMINAL; Criticality Code Justification: FEAT. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-00-421-2994 still in active supply?

NSN 5961-00-421-2994 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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