PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N3903Semiconductor Device,diode

Electronic Transistors Corp · NSN 5961-00-194-9074 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-194-9074 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-194-9074. Primary manufacturer part number: 1N3903.
Features
  • Semiconductor Device,diode — FSC 5961
  • Mounting Facility Quantity: 1
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: DO-5
  • Features Provided: HERMETICALLY SEALED CASE
  • Mounting Method: THREADED STUD(S)
  • Maximum Operating Temp Per Measurement Point: 150.0 CELSIUS CASE DEGC
  • Nominal Thread Size: 0.250 INCHES IN
  • Current Rating Per Characteristic: 20.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Silicon Semiconductor construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-00-194-9074, 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 Electronic Transistors Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-194-9074
Primary Part Number1N3903
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerElectronic Transistors Corp
StatusACTIVE
Mounting Facility Quantity1
Joint Electronic Device Engineering Council/jedec/case Outline DesignationDO-5
Features ProvidedHERMETICALLY SEALED CASE
Mounting MethodTHREADED STUD(S)
Maximum Operating Temp Per Measurement Point150.0 CELSIUS CASE DEGC
Nominal Thread Size0.250 INCHES IN
Current Rating Per Characteristic20.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE
Overall Diameter0.667 INCHES MAXIMUM IN
Overall Width Across Flats0.667 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic400.0 MAXIMUM REVERSE VOLTAGE, PEAK
MaterialSILICON SEMICONDUCTOR
Terminal Type and Quantity1 TAB, SOLDER LUG AND 1 THREADED STUD
Specification/standard Data80131-RELEASE3944 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
MaterialGLASS ENCLOSURE
Thread Series DesignatorUNF
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-135-8613 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-172-7865 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-350-1470 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-463-7171 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-472-1103 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-487-81311N3889 INTERCHANGEABLE
Semiconductor Device,diode
Palomar Products, Inc.
5961-00-491-44011N3909 INTERCHANGEABLE
Semiconductor Device,diode
Palomar Products, Inc.
5961-00-903-74771N3911 INTERCHANGEABLE
Semiconductor Device,diode
Westinghouse Electric Corp
5961-01-056-5017UFR3120 INTERCHANGEABLE
Semiconductor Device,diode
Micro Uspd Inc
5961-01-073-3785 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
1N3903 Electronic Transistors Corp (USA)
1N3903 Westinghouse Electric Corp Semiconductor Div (USA)
1N3903 Stellant Systems Inc (USA)
1N3903 Solitron Devices, Inc. (USA)
1N3903 On Semiconductor Corporation (USA)
1N3903 Solid State Devices, Inc (USA)
1N3903 Gilbert Engineering Co Inc/incon Sub of Transitron Electronic Corp (USA)
1N3903 General Electric Co Semi-Conductor Products Dept (USA)
1N3903 Trw Electronics and Defense Sector Rf Devices (USA)
1N3903 Electronic Industries Association
RELEASE3944 Electronic Industries Association
1N3903 Freescale Semiconductor, Inc. (USA)
Related Parts
5961-00-135-8613INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-172-7865INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-350-1470INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-463-7171INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-472-1103INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-487-8131INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1N3889
5961-00-491-4401INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1N3909
5961-00-903-7477INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1N3911
5961-01-056-5017INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
UFR3120
5961-01-073-3785INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-084-4072INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-132-0036INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-00-194-9074?

NSN 5961-00-194-9074 is a Semiconductor Device,diode, manufactured by Electronic Transistors Corp, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-194-9074?

NSN 5961-00-194-9074 has 12 cross-referenced part numbers: 1N3903 (Electronic Transistors Corp), 1N3903 (Westinghouse Electric Corp Semiconductor Div), 1N3903 (Stellant Systems Inc), 1N3903 (Solitron Devices, Inc.), 1N3903 (On Semiconductor Corporation) and 7 more.

What NSN replaces 5961-00-194-9074?

There are 12 known substitutes for 5961-00-194-9074: 5961-00-135-8613, 5961-00-172-7865, 5961-00-350-1470 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N3903?

Key specifications for 1N3903: Mounting Facility Quantity: 1; Joint Electronic Device Engineering Council/jedec/case Outline Designation: DO-5; Features Provided: HERMETICALLY SEALED CASE; Overall Length: 0.450 INCHES MAXIMUM IN. 16 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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