PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N5143ASemiconductor Device,diode

Freescale Semiconductor, Inc. · NSN 5961-00-457-0949 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-457-0949 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-457-0949. Primary manufacturer part number: 1N5143A.
Features
  • Semiconductor Device,diode — FSC 5961
  • Terminal Length: 1.000 INCHES MINIMUM IN
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Joint Electronic Device Engineering Council/jedec/case Outline Designation: DO-7
  • Mounting Method: TERMINAL
  • Power Rating Per Characteristic: 400.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
  • Overall Diameter: 0.085 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
  • Voltage Rating in Volts Per Characteristic: 60.0 MAXIMUM REVERSE VOLTAGE, PEAK
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 5961-00-457-0949, 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 Freescale Semiconductor, Inc.. Government technical data includes 11 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-457-0949
Primary Part Number1N5143A
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerFreescale Semiconductor, Inc.
StatusACTIVE
Terminal Length1.000 INCHES MINIMUM IN
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Joint Electronic Device Engineering Council/jedec/case Outline DesignationDO-7
Mounting MethodTERMINAL
Power Rating Per Characteristic400.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
Overall Diameter0.085 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
Voltage Rating in Volts Per Characteristic60.0 MAXIMUM REVERSE VOLTAGE, PEAK
Features ProvidedHERMETICALLY SEALED CASE
MaterialSILICON SEMICONDUCTOR
Specification/standard Data80131-RELEASE5259 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
MaterialGLASS ENCLOSURE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5961-00-116-6581 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-233-7293 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-387-3536 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-407-0241 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-435-3797 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-450-6362 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-499-7896 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-690-1613 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-935-64760122-0256 INTERCHANGEABLE
Semiconductor Device,diode
Avago Technologies Us Inc Div Avago Technologies
5961-00-975-5777 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
1N5143A Freescale Semiconductor, Inc. (USA)
1N5143A On Semiconductor Corporation (USA)
1N5143A Electronic Industries Association
RELEASE5259 Electronic Industries Association
Related Parts
5961-00-116-6581INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-233-7293INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-387-3536INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-407-0241INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-435-3797INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-450-6362INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-499-7896INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-690-1613INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-935-6476INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
0122-0256
5961-00-975-5777INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-00-457-0949?

NSN 5961-00-457-0949 is a Semiconductor Device,diode, manufactured by Freescale Semiconductor, Inc., classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-457-0949?

NSN 5961-00-457-0949 has 4 cross-referenced part numbers: 1N5143A (Freescale Semiconductor, Inc.), 1N5143A (On Semiconductor Corporation), 1N5143A (Electronic Industries Association), RELEASE5259 (Electronic Industries Association).

What NSN replaces 5961-00-457-0949?

There are 10 known substitutes for 5961-00-457-0949: 5961-00-116-6581, 5961-00-233-7293, 5961-00-387-3536 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N5143A?

Key specifications for 1N5143A: Terminal Length: 1.000 INCHES MINIMUM IN; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Joint Electronic Device Engineering Council/jedec/case Outline Designation: DO-7; Mounting Method: TERMINAL. 12 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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