PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121550Semiconductor Device,diode

Lockheed Martin Corp · NSN 5961-01-054-0689 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-054-0689 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-054-0689. Primary manufacturer part number: 121550.
Features
  • Semiconductor Device,diode — FSC 5961
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
General Description

The Semiconductor Device,diode, cataloged under National Stock Number 5961-01-054-0689, 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 Lockheed Martin Corp. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-054-0689
Primary Part Number121550
Item NameSemiconductor Device,diode
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-100-0255121550 INTERCHANGEABLE
Cone and Rollers,tapered Roller
General Motors Llc Dba General Motors Llc
5340-01-190-55304078T06P01 INTERCHANGEABLE
Boot,dust and Moisture Seal
General Electric Company Dba Ge Aerospace
Cross-Reference Index
Part NumberManufacturer
121550 Lockheed Martin Corp (USA)
Related Parts
3110-00-100-0255INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
121550
5340-01-190-5530INTERCHANGEABLE
BOOT,DUST AND MOISTURE SEAL
4078T06P01

Frequently Asked Questions

What is NSN 5961-01-054-0689?

NSN 5961-01-054-0689 is a Semiconductor Device,diode, manufactured by Lockheed Martin Corp, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-054-0689?

NSN 5961-01-054-0689 has 1 cross-referenced part number: 121550 (Lockheed Martin Corp).

What NSN replaces 5961-01-054-0689?

There are 2 known substitutes for 5961-01-054-0689: 3110-00-100-0255, 5340-01-190-5530. Verify interchangeability with system specifications before substitution.

What are the specifications of 121550?

Key specifications for 121550: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 2 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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