PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21949Semiconductor Device,diode

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5961-01-492-5470 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-492-5470 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-492-5470. Primary manufacturer part number: 21949.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: GLASS ENCLOSURE
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Material: SILICON SEMICONDUCTOR
  • Overall Diameter: 0.085 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • Current Rating Per Characteristic: 650.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC AND 2.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
  • Features Provided: HERMETICALLY SEALED CASE
  • Terminal Length: 1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Glass Enclosure construction
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-492-5470, 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 Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-492-5470
Primary Part Number21949
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
MaterialGLASS ENCLOSURE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
MaterialSILICON SEMICONDUCTOR
Overall Diameter0.085 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
Current Rating Per Characteristic650.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC AND 2.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
Features ProvidedHERMETICALLY SEALED CASE
Terminal Length1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Mounting MethodTERMINAL
Maximum Operating Temp Per Measurement Point175.0 CELSIUS AMBIENT AIR DEGC
Voltage Rating in Volts Per Characteristic80.0 MAXIMUM REVERSE VOLTAGE, PEAK AND 70.0 MAXIMUM WORKING PEAK REVERSE VOLTAGE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4510-00-035-4770 INTERCHANGEABLE
Cap,regulating Scre
4820-00-035-696921949 INTERCHANGEABLE
Disk,valve
Clayton Manufacturing Company
4730-00-223-64103B8487 INTERCHANGEABLE
Fitting,lubrication
Caterpillar Inc Div Caterpillar Defense
5961-00-235-8678 INTERCHANGEABLE
Semiconductor Device,diode
5999-01-561-815421949 INTERCHANGEABLE
Sensor-Transducer
Ohio Semitronics Inc
Cross-Reference Index
Part NumberManufacturer
21949 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
4510-00-035-4770INTERCHANGEABLE
CAP,REGULATING SCRE
4820-00-035-6969INTERCHANGEABLE
DISK,VALVE
21949
4730-00-223-6410INTERCHANGEABLE
FITTING,LUBRICATION
3B8487
5961-00-235-8678INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5999-01-561-8154INTERCHANGEABLE
SENSOR-TRANSDUCER
21949

Frequently Asked Questions

What is NSN 5961-01-492-5470?

NSN 5961-01-492-5470 is a Semiconductor Device,diode, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-492-5470?

NSN 5961-01-492-5470 has 1 cross-referenced part number: 21949 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5961-01-492-5470?

There are 5 known substitutes for 5961-01-492-5470: 4510-00-035-4770, 4820-00-035-6969, 4730-00-223-6410 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21949?

Key specifications for 21949: Material: GLASS ENCLOSURE; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Material: SILICON SEMICONDUCTOR; Overall Length: 0.230 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com