PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4LM143HSemiconductor Device,thyristor

Mueller Tool and Mfg Co · NSN 5961-01-218-9026 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-01-218-9026 — this item is cataloged by the U.S. Government under National Stock Number 5961-01-218-9026. Primary manufacturer part number: 4LM143H.
Features
  • Semiconductor Device,thyristor — FSC 5961
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • 3 verified cross-references
  • Primary manufacturer: Mueller Tool and Mfg Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Semiconductor Device,thyristor, cataloged under National Stock Number 5961-01-218-9026, 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 Mueller Tool and Mfg Co. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-01-218-9026
Primary Part Number4LM143H
Item NameSemiconductor Device,thyristor
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerMueller Tool and Mfg Co
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5962-01-026-1545LM143H INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5962-01-135-7395 INTERCHANGEABLE
Microcircuit,linear
Cross-Reference Index
Part NumberManufacturer
4LM143H Mueller Tool and Mfg Co (USA)
4129H94H27 Green Horace and Co Ltd (GBR)
LM143H National Semiconductor Corp (USA)
Related Parts
5962-01-026-1545INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM143H
5962-01-135-7395INTERCHANGEABLE
MICROCIRCUIT,LINEAR

Frequently Asked Questions

What is NSN 5961-01-218-9026?

NSN 5961-01-218-9026 is a Semiconductor Device,thyristor, manufactured by Mueller Tool and Mfg Co, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-01-218-9026?

NSN 5961-01-218-9026 has 3 cross-referenced part numbers: 4LM143H (Mueller Tool and Mfg Co), 4129H94H27 (Green Horace and Co Ltd), LM143H (National Semiconductor Corp).

What NSN replaces 5961-01-218-9026?

There are 2 known substitutes for 5961-01-218-9026: 5962-01-026-1545, 5962-01-135-7395. Verify interchangeability with system specifications before substitution.

What are the specifications of 4LM143H?

Key specifications for 4LM143H: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER 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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