PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N4621Semiconductor Device,diode

Electronic Industries Association · NSN 5961-01-309-5939 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-309-5939 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-309-5939. Primary manufacturer part number: 1N4621.
Features
  • Semiconductor Device,diode — FSC 5961
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Material: GLASS ENCLOSURE
  • Material: SILICON SEMICONDUCTOR
  • Power Rating Per Characteristic: 250.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
  • Voltage Rating in Volts Per Characteristic: 3.78 MAXIMUM COLLECTOR TO EMITTER REVERSE VOLTAGE, WITH BASE SHORT-CIRCUITED TO EMITTER
  • Current Rating Per Characteristic: 75.00 MILLIAMPERES MAXIMUM VOLTAGE REGULATOR DIODE CURRENT
  • Features Provided: HERMETICALLY SEALED CASE
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 5961-01-309-5939, 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 Industries Association. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-309-5939
Primary Part Number1N4621
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerElectronic Industries Association
StatusACTIVE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
MaterialGLASS ENCLOSURE
MaterialSILICON SEMICONDUCTOR
Power Rating Per Characteristic250.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
Voltage Rating in Volts Per Characteristic3.78 MAXIMUM COLLECTOR TO EMITTER REVERSE VOLTAGE, WITH BASE SHORT-CIRCUITED TO EMITTER
Current Rating Per Characteristic75.00 MILLIAMPERES MAXIMUM VOLTAGE REGULATOR DIODE CURRENT
Features ProvidedHERMETICALLY SEALED CASE
Mounting MethodTERMINAL
Voltage Tolerance in Percent-5.0 TO 5.0
Joint Electronic Device Engineering Council/jedec/case Outline DesignationDO-14
Terminal Length1.000 INCHES MINIMUM IN
Maximum Operating Temp Per Measurement Point200.0 CELSIUS AMBIENT AIR DEGC
Function for Which DesignedZENER DIODE
Overall Diameter0.140 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5961-00-260-2621 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-276-8256 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-276-8265 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-368-2537 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-652-8720 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-721-3614 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
1N4621 Electronic Industries Association
1N4621 Stmicroelectronics Inc (USA)
RELEASE5137 Electronic Industries Association
1N4621 Trw Electronics and Defense Sector Rf Devices (USA)
Related Parts
5961-00-260-2621INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-276-8256INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-276-8265INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-368-2537INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-652-8720INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-721-3614INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-01-309-5939?

NSN 5961-01-309-5939 is a Semiconductor Device,diode, manufactured by Electronic Industries Association, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-309-5939?

NSN 5961-01-309-5939 has 4 cross-referenced part numbers: 1N4621 (Electronic Industries Association), 1N4621 (Stmicroelectronics Inc), RELEASE5137 (Electronic Industries Association), 1N4621 (Trw Electronics and Defense Sector Rf Devices).

What NSN replaces 5961-01-309-5939?

There are 6 known substitutes for 5961-01-309-5939: 5961-00-260-2621, 5961-00-276-8256, 5961-00-276-8265 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N4621?

Key specifications for 1N4621: Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Material: GLASS ENCLOSURE; Material: SILICON SEMICONDUCTOR; Power Rating Per Characteristic: 250.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION. 15 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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