PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

581R503H03Transistor

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5961-01-083-2461 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-083-2461 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-083-2461. Primary manufacturer part number: 581R503H03.
Features
  • Transistor — FSC 5961
  • Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC
  • Terminal Length: 1.500 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
  • Voltage Rating in Volts Per Characteristic: 75.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 50.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
  • Overall Diameter: 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
  • Terminal Circle Diameter: 0.100 INCHES NOMINAL IN
  • Terminal Type and Quantity: 3 UNINSULATED WIRE LEAD
  • Specification/standard Data: 81349-MIL-PRF-19500/255 GOVERNMENT SPECIFICATION
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transistor, cataloged under National Stock Number 5961-01-083-2461, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 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
NSN5961-01-083-2461
Primary Part Number581R503H03
Item NameTransistor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusCANCELLED
Maximum Operating Temp Per Measurement Point200.0 CELSIUS JUNCTION DEGC
Terminal Length1.500 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic75.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 50.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
Overall Diameter0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN
Terminal Circle Diameter0.100 INCHES NOMINAL IN
Terminal Type and Quantity3 UNINSULATED WIRE LEAD
Specification/standard Data81349-MIL-PRF-19500/255 GOVERNMENT SPECIFICATION
Current Rating Per Characteristic800.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
Mounting MethodTERMINAL
Internal ConfigurationJUNCTION CONTACT
Electrode Internally-Electrically Connected to CaseCOLLECTOR
Test Data Document81349-MIL-PRF-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.).
Semiconductor MaterialSILICON
Power Rating Per Characteristic1.8 WATTS MAXIMUM TOTAL POWER DISSIPATION
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5961-00-058-629648-36465A01 INTERCHANGEABLE
Semiconductor Device Set
General Dynamics Mission Systems, Inc. Dba Gdms
5961-00-138-1132T065-502-0001 INTERCHANGEABLE
Transistor
L3harris Interstate Electronics Corporation
5961-00-164-172980001-12 INTERCHANGEABLE
Transistor
General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations
5961-00-226-67652N2222 INTERCHANGEABLE
Transistor
Texas Instruments Incorporated
5961-00-226-8584 INTERCHANGEABLE
Transistor
5961-00-535-4500247ASC0644-001 INTERCHANGEABLE
Transistor
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5961-00-724-2093019-003675-250 INTERCHANGEABLE
Transistor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5961-00-828-2559 INTERCHANGEABLE
Transistor
5961-00-858-3826 INTERCHANGEABLE
Transistor
5961-00-903-78220481-0021 INTERCHANGEABLE
Transistor
Bayly Networks, Inc. Dba Coastcom Networks
Cross-Reference Index
Part NumberManufacturer
581R503H03 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
JAN2N2222A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
352-0552-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MIL-PRF-19500/255 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
618-4921-200 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
5961PL2169785 Jednolity Indeks Materialowy - Uniform Material Index (POL)
JANTX2N2222AL Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2N2222 Freescale Semiconductor, Inc. (USA)
3228508 Raytheon Company Dba Raytheon (USA)
Related Parts
5961-00-058-6296INTERCHANGEABLE
SEMICONDUCTOR DEVICE SET
48-36465A01
5961-00-138-1132INTERCHANGEABLE
TRANSISTOR
T065-502-0001
5961-00-164-1729INTERCHANGEABLE
TRANSISTOR
80001-12
5961-00-226-6765INTERCHANGEABLE
TRANSISTOR
2N2222
5961-00-226-8584INTERCHANGEABLE
TRANSISTOR
5961-00-535-4500INTERCHANGEABLE
TRANSISTOR
247ASC0644-001
5961-00-724-2093INTERCHANGEABLE
TRANSISTOR
019-003675-250
5961-00-828-2559INTERCHANGEABLE
TRANSISTOR
5961-00-858-3826INTERCHANGEABLE
TRANSISTOR
5961-00-903-7822INTERCHANGEABLE
TRANSISTOR
0481-0021
5961-00-931-2766INTERCHANGEABLE
TRANSISTOR
2N2222
5961-00-936-9952INTERCHANGEABLE
TRANSISTOR
2N2222

Frequently Asked Questions

What is NSN 5961-01-083-2461?

NSN 5961-01-083-2461 is a Transistor, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5961 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5961-01-083-2461?

NSN 5961-01-083-2461 has 9 cross-referenced part numbers: 581R503H03 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), JAN2N2222A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 352-0552-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), MIL-PRF-19500/255 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 618-4921-200 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems) and 4 more.

What NSN replaces 5961-01-083-2461?

There are 12 known substitutes for 5961-01-083-2461: 5961-00-058-6296, 5961-00-138-1132, 5961-00-164-1729 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 581R503H03?

Key specifications for 581R503H03: Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Special Features: JUNCTION PATTERN ARRANGEMENT: NPN; Terminal Length: 1.500 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 75.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 50.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 6.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5961-01-083-2461 still in active supply?

NSN 5961-01-083-2461 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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