PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40958Transformer,power

Magnetika Inc Div Magnetika/phillipsburg Location · NSN 5950-00-901-1444 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-901-1444 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-901-1444. Primary manufacturer part number: 40958.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Voltage: 3.50 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 300.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE 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 5950-00-901-1444, 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 Magnetika Inc Div Magnetika/phillipsburg Location. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-901-1444
Primary Part Number40958
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMagnetika Inc Div Magnetika/phillipsburg Location
StatusCANCELLED
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage3.50 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage300.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current85.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Body Length3.562 INCHES NOMINAL IN
Terminal Type and Quantity10 TAB, SOLDER LUG
Body Width3.062 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Height3.875 INCHES NOMINAL IN
Winding Operating Voltage120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current3.5 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5330-00-859-365740958 INTERCHANGEABLE
Gasket
Leslie Controls, Inc. Dba Leslie Controls Inc
5950-00-998-7534 INTERCHANGEABLE
Transformer,power
5962-01-031-7030 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
TF1RX03JB Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
40958 Opt Industries Inc Div of Electronika Inc (USA)
40958 PRIMARY Magnetika Inc Div Magnetika/phillipsburg Location (USA)
39033 Dictaphone Corporation (USA)
Related Parts
5330-00-859-3657INTERCHANGEABLE
GASKET
40958
5950-00-998-7534INTERCHANGEABLE
TRANSFORMER,POWER
5962-01-031-7030INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 5950-00-901-1444?

NSN 5950-00-901-1444 is a Transformer,power, manufactured by Magnetika Inc Div Magnetika/phillipsburg Location, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-901-1444?

NSN 5950-00-901-1444 has 4 cross-referenced part numbers: TF1RX03JB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 40958 (Opt Industries Inc Div of Electronika Inc), 40958 (Magnetika Inc Div Magnetika/phillipsburg Location), 39033 (Dictaphone Corporation).

What NSN replaces 5950-00-901-1444?

There are 3 known substitutes for 5950-00-901-1444: 5330-00-859-3657, 5950-00-998-7534, 5962-01-031-7030. Verify interchangeability with system specifications before substitution.

What are the specifications of 40958?

Key specifications for 40958: Reliability Indicator: NOT ESTABLISHED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Operating Voltage: 3.50 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY; Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-901-1444 still in active supply?

NSN 5950-00-901-1444 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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