PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28653Transformer,power

Freed Transformer Co · NSN 5950-00-519-9001 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-519-9001 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-519-9001. Primary manufacturer part number: 28653.
Features
  • Transformer,power — FSC 5950
  • Body Length: 4.250 INCHES NOMINAL IN
  • Winding Operating Current: 8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Thread Series Designator: UNF SINGLE GROUP
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Height: 5.500 INCHES NOMINAL 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 5950-00-519-9001, 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 23 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-519-9001
Primary Part Number28653
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Body Length4.250 INCHES NOMINAL IN
Winding Operating Current8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Thread Series DesignatorUNF SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width2.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height5.500 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity4 TAB, SOLDER LUG AND 2 CLIP
Inclosure TypeHERMETICALLY SEALED
Winding Operating Current200.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Maximum Operating Temp57.0 CELSIUS DEGC
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Width3.750 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Voltage8.80 AC KILOVOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage1.25 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length3.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Nominal Thread Size0.190 INCHES SINGLE GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3455-00-266-9451 INTERCHANGEABLE
File,rotary
3030-00-274-658528653 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5950-01-155-070228653 INTERCHANGEABLE
Transformer,power
Data Device Corp Dba Beta Transformer Technology
Cross-Reference Index
Part NumberManufacturer
28653 Freed Transformer Co (USA)
TR1565ISSUEA Bae Systems Information and Electronic Systems Integration Inc. (USA)
Related Parts
3455-00-266-9451INTERCHANGEABLE
FILE,ROTARY
3030-00-274-6585INTERCHANGEABLE
BELT,V
28653
5950-01-155-0702INTERCHANGEABLE
TRANSFORMER,POWER
28653

Frequently Asked Questions

What is NSN 5950-00-519-9001?

NSN 5950-00-519-9001 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 5950-00-519-9001?

NSN 5950-00-519-9001 has 2 cross-referenced part numbers: 28653 (Freed Transformer Co), TR1565ISSUEA (Bae Systems Information and Electronic Systems Integration Inc.).

What NSN replaces 5950-00-519-9001?

There are 3 known substitutes for 5950-00-519-9001: 3455-00-266-9451, 3030-00-274-6585, 5950-01-155-0702. Verify interchangeability with system specifications before substitution.

What are the specifications of 28653?

Key specifications for 28653: Body Length: 4.250 INCHES NOMINAL IN; Winding Operating Current: 8.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY; Thread Series Designator: UNF SINGLE GROUP; Thread Quantity Per Inch: 32 SINGLE GROUP. 24 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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