PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

639A289H01Transformer,power

Northrop Grumman Support Services Corp · NSN 5950-01-145-5529 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-145-5529 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-145-5529. Primary manufacturer part number: 639A289H01.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: FULLY INCLOSED
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Terminal Type and Quantity: 4 TAB, SOLDER LUG
  • Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE GROUP IN
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Distance Between Mounting Facility Centers: 3.562 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-145-5529, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 16 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
NSN5950-01-145-5529
Primary Part Number639A289H01
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Inclosure TypeFULLY INCLOSED
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity4 TAB, SOLDER LUG
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Mounting Facility Quantity2 SINGLE GROUP
Distance Between Mounting Facility Centers3.562 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Body Height2.687 INCHES NOMINAL IN
Body Width2.875 INCHES NOMINAL IN
Frequency Rating60.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage18.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Length3.187 INCHES NOMINAL IN
Mounting MethodBRACKET(S) AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-892-830811567782 INTERCHANGEABLE
Reactor
Us Army Aviation and Missile Command
2940-01-025-389342697 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5962-01-178-249242697 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
Cross-Reference Index
Part NumberManufacturer
639A289H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
639A289H01 PRIMARY Northrop Grumman Support Services Corp (USA)
42697 Freed Transformer Co (USA)
Related Parts
5950-00-892-8308INTERCHANGEABLE
REACTOR
11567782
2940-01-025-3893INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
42697
5962-01-178-2492INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42697

Frequently Asked Questions

What is NSN 5950-01-145-5529?

NSN 5950-01-145-5529 is a Transformer,power, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-145-5529?

NSN 5950-01-145-5529 has 3 cross-referenced part numbers: 639A289H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 639A289H01 (Northrop Grumman Support Services Corp), 42697 (Freed Transformer Co).

What NSN replaces 5950-01-145-5529?

There are 3 known substitutes for 5950-01-145-5529: 5950-00-892-8308, 2940-01-025-3893, 5962-01-178-2492. Verify interchangeability with system specifications before substitution.

What are the specifications of 639A289H01?

Key specifications for 639A289H01: Inclosure Type: FULLY INCLOSED; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Terminal Type and Quantity: 4 TAB, SOLDER LUG; Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE GROUP IN. 16 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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