PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N251Semiconductor Device,diode

Texas Instruments Incorporated · NSN 5961-00-923-1931 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-923-1931 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-923-1931. Primary manufacturer part number: 1N251.
Features
  • Semiconductor Device,diode — FSC 5961
  • Material: GLASS ENCLOSURE
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Overall Diameter: 0.125 INCHES MAXIMUM IN
  • Mounting Method: TERMINAL
  • Terminal Length: 1.000 INCHES MINIMUM IN
  • Current Rating Per Characteristic: 0.20 AMPERES MAXIMUM REVERSE CURRENT, DC
  • Voltage Rating in Volts Per Characteristic: 40.0 MAXIMUM REVERSE VOLTAGE, PEAK
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 5961-00-923-1931, 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 Texas Instruments Incorporated. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-923-1931
Primary Part Number1N251
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerTexas Instruments Incorporated
StatusACTIVE
MaterialGLASS ENCLOSURE
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Overall Diameter0.125 INCHES MAXIMUM IN
Mounting MethodTERMINAL
Terminal Length1.000 INCHES MINIMUM IN
Current Rating Per Characteristic0.20 AMPERES MAXIMUM REVERSE CURRENT, DC
Voltage Rating in Volts Per Characteristic40.0 MAXIMUM REVERSE VOLTAGE, PEAK
Maximum Operating Temp Per Measurement Point150.0 CELSIUS AMBIENT AIR DEGC
MaterialSILICON SEMICONDUCTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5961-00-017-0459S414246 INTERCHANGEABLE
Semiconductor Device,diode
Raytheon Company
5961-00-552-9852 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-712-3940 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
99250-212 Lockheed Martin Corporation Div Rms (USA)
1N251 PRIMARY Texas Instruments Incorporated (USA)
99250-212 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
5961-00-017-0459INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
S414246
5961-00-552-9852INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-712-3940INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE

Frequently Asked Questions

What is NSN 5961-00-923-1931?

NSN 5961-00-923-1931 is a Semiconductor Device,diode, manufactured by Texas Instruments Incorporated, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-923-1931?

NSN 5961-00-923-1931 has 3 cross-referenced part numbers: 99250-212 (Lockheed Martin Corporation Div Rms), 1N251 (Texas Instruments Incorporated), 99250-212 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin).

What NSN replaces 5961-00-923-1931?

There are 3 known substitutes for 5961-00-923-1931: 5961-00-017-0459, 5961-00-552-9852, 5961-00-712-3940. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N251?

Key specifications for 1N251: Material: GLASS ENCLOSURE; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Overall Diameter: 0.125 INCHES MAXIMUM IN; Mounting Method: TERMINAL. 10 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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