PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LM123KMicrocircuit,linear

National Semiconductor Corporation · NSN 5962-01-087-8519 · FSC 5962 · No Item Name Available
Verified by PartsTable
NSN 5962-01-087-8519 — this item is cataloged by the U.S. Government under National Stock Number 5962-01-087-8519. Primary manufacturer part number: LM123K.
Features
  • Microcircuit,linear — FSC 5962
  • Body Height: 0.325 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
  • Features Provided: HERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS
  • Terminal Surface Treatment: SOLDER
  • Terminal Type and Quantity: 3 PIN
  • Design Function and Quantity: 1 REGULATOR, VOLTAGE
  • Body Width: 1.050 INCHES MAXIMUM IN
  • Storage Temp Range: -65.0 TO 150.0 CELSIUS DEGC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microcircuit,linear, cataloged under National Stock Number 5962-01-087-8519, is classified within Federal Supply Class 5962 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is National Semiconductor Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 40 commercial cross-references from 23 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5962-01-087-8519
Primary Part NumberLM123K
Item NameMicrocircuit,linear
FSC / FSG5962 / 59 — No Item Name Available
ManufacturerNational Semiconductor Corporation
StatusCANCELLED
Body Height0.325 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
Features ProvidedHERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS
Terminal Surface TreatmentSOLDER
Terminal Type and Quantity3 PIN
Design Function and Quantity1 REGULATOR, VOLTAGE
Body Width1.050 INCHES MAXIMUM IN
Storage Temp Range-65.0 TO 150.0 CELSIUS DEGC
Inclosure ConfigurationCAN
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Inclosure MaterialMETAL
Input Circuit Pattern1 INPUT
Test Data Document80063-SM-A-915925 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
Body Length1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
Maximum Power Dissipation Rating30.0 WATTS
Voltage Rating and Type Per Characteristic20.0 VOLTS MAXIMUM POWER SOURCE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5365-00-306-5787117258 INTERCHANGEABLE
Spacer,poppet Valve
Curtiss-Wright Controls, Inc. Div Actuation Division
2920-00-462-4848101863-1 INTERCHANGEABLE
Starter,engine,electrical
Caterpillar Inc Div Caterpillar Defense
5962-01-019-2257LM123K INTERCHANGEABLE
Microcircuit,digital
National Semiconductor Corporation
5962-01-043-4930LM123K/883B INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5950-01-043-498410178338 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5962-01-110-7283 INTERCHANGEABLE
Microcircuit,linear
5962-01-123-4944LM123K/883B INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5962-01-140-7690LM123K INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5962-01-142-4196LM223K INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5962-01-148-4808LM123K-STEEL/883B INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
Cross-Reference Index
Part NumberManufacturer
LM123K National Semiconductor Corporation (USA)
164817 Northrop Grumman Systems Corporation (USA)
LM145K-5/883B National Semiconductor Corporation (USA)
LM323 Mercury Commercial Electronics, Inc. Dba Micronetics (USA)
I11-0009-000 L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications (USA)
GM820AJCS Northrop Grumman Systems Corporation (USA)
LM323KC National Semiconductor Corporation (USA)
LM123KSTEEL883 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
940-22960-81 Pre-Flite Industries Corp (USA)
SS-60225-101 Bae Systems Maritime Services (GBR)
101863-1 Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems (USA)
14961-002 Astronautics Corporation of America (USA)
5962-8777501YX Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
SM-A-945026 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
1810-0323 Br Communications (inc) (USA)
LM123K/883B Linear Technology Llc (USA)
G391516S1 L3harris Technologies, Inc Div Space & Airborne Systems (USA)
5962-8777501YB Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (standard Microcircuit (USA)
LM123K/883C Linear Technology Llc (USA)
940-22489-S78 L3harris Maritime Power & Energy Solutions, Inc (USA)
Related Parts
5365-00-306-5787INTERCHANGEABLE
SPACER,POPPET VALVE
117258
2920-00-462-4848INTERCHANGEABLE
STARTER,ENGINE,ELECTRICAL
101863-1
5962-01-019-2257INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
LM123K
5962-01-043-4930INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM123K/883B
5950-01-043-4984INTERCHANGEABLE
TRANSFORMER,POWER
10178338
5962-01-110-7283INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5962-01-123-4944INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM123K/883B
5962-01-140-7690INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM123K
5962-01-142-4196INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM223K
5962-01-148-4808INTERCHANGEABLE
MICROCIRCUIT,LINEAR
LM123K-STEEL/883B
5962-01-203-5849INTERCHANGEABLE
MICROCIRCUIT,LINEAR
171919
5962-01-241-9786INTERCHANGEABLE
MICROCIRCUIT,LINEAR
349-314-003

Frequently Asked Questions

What is NSN 5962-01-087-8519?

NSN 5962-01-087-8519 is a Microcircuit,linear, manufactured by National Semiconductor Corporation, classified under FSC 5962 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5962-01-087-8519?

NSN 5962-01-087-8519 has 40 cross-referenced part numbers: LM123K (National Semiconductor Corporation), 164817 (Northrop Grumman Systems Corporation), LM145K-5/883B (National Semiconductor Corporation), LM323 (Mercury Commercial Electronics, Inc. Dba Micronetics), I11-0009-000 (L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications) and 35 more.

What NSN replaces 5962-01-087-8519?

There are 12 known substitutes for 5962-01-087-8519: 5365-00-306-5787, 2920-00-462-4848, 5962-01-019-2257 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LM123K?

Key specifications for LM123K: Body Height: 0.325 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN; Features Provided: HERMETICALLY SEALED AND MONOLITHIC AND POSITIVE OUTPUTS; Terminal Surface Treatment: SOLDER; Terminal Type and Quantity: 3 PIN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5962-01-087-8519 still in active supply?

NSN 5962-01-087-8519 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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