PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40942Transformer,power

Freed Transformer Co · NSN 5950-00-905-2803 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-905-2803 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-905-2803. Primary manufacturer part number: 40942.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Inclosure Type: HERMETICALLY SEALED
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.188 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Height: 2.375 INCHES NOMINAL IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-905-2803, 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 Freed Transformer Co. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-905-2803
Primary Part Number40942
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeHERMETICALLY SEALED
Center to Center Distance Between Mounting Facilities Parallel to Length1.188 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height2.375 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Winding Operating Current19.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Voltage48.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Frequency Rating5.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.188 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage40.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity5 STANDOFF, SOLDER LUG
Thread Quantity Per Inch32 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5998-00-930-4447SMD583122 INTERCHANGEABLE
Circuit Card Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5961-01-016-2781720025 INTERCHANGEABLE
Semiconductor Device,thyristor
Engineered Magnetics, Inc. Dba Engineered Magnetics
6625-01-192-780040942 INTERCHANGEABLE
Meter,arbitrary Scale
Fisica Applied Technologies, Inc. Div Datron Advanced Technologies
5331-01-408-286440942 INTERCHANGEABLE
O-Ring
Tritan Corp
5305-01-555-762240942 INTERCHANGEABLE
Setscrew
Tescom Corp Dba Tescom Div Tescom
6210-01-689-1932EFO-X022-77.4-02 INTERCHANGEABLE
Fixture,lighting
Energy Focus, Inc. Div Mmm
6210-01-693-4134EFO-X022-77.4-03 INTERCHANGEABLE
Fixture,lighting
Energy Focus, Inc. Div Mmm
6210-01-694-3016EFO-X022-77.5-02 INTERCHANGEABLE
Fixture,lighting
Energy Focus, Inc. Div Mmm
Cross-Reference Index
Part NumberManufacturer
40942 Freed Transformer Co (USA)
890527 Bae Systems Information and Electronic Systems Integration Inc. (USA)
Related Parts
5998-00-930-4447INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
SMD583122
5961-01-016-2781INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
720025
6625-01-192-7800INTERCHANGEABLE
METER,ARBITRARY SCALE
40942
5331-01-408-2864INTERCHANGEABLE
O-RING
40942
5305-01-555-7622INTERCHANGEABLE
SETSCREW
40942
6210-01-689-1932INTERCHANGEABLE
FIXTURE,LIGHTING
EFO-X022-77.4-02
6210-01-693-4134INTERCHANGEABLE
FIXTURE,LIGHTING
EFO-X022-77.4-03
6210-01-694-3016INTERCHANGEABLE
FIXTURE,LIGHTING
EFO-X022-77.5-02

Frequently Asked Questions

What is NSN 5950-00-905-2803?

NSN 5950-00-905-2803 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-905-2803?

NSN 5950-00-905-2803 has 2 cross-referenced part numbers: 40942 (Freed Transformer Co), 890527 (Bae Systems Information and Electronic Systems Integration Inc.).

What NSN replaces 5950-00-905-2803?

There are 8 known substitutes for 5950-00-905-2803: 5998-00-930-4447, 5961-01-016-2781, 6625-01-192-7800 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40942?

Key specifications for 40942: Reliability Indicator: NOT ESTABLISHED; Overall Length: 1.625 INCHES NOMINAL IN; Inclosure Type: HERMETICALLY SEALED; Overall Height: 3.875 INCHES MAXIMUM IN. 20 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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