PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28950Transformer,power

Freed Transformer Co · NSN 5950-00-615-5101 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-615-5101 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-615-5101. Primary manufacturer part number: 28950.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: HERMETICALLY SEALED
  • Reliability Indicator: NOT ESTABLISHED
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN
  • Body Length: 1.750 INCHES MAXIMUM IN
  • Body Width: 1.265 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 7 TAB, SOLDER LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-615-5101, 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 18 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-615-5101
Primary Part Number28950
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Inclosure TypeHERMETICALLY SEALED
Reliability IndicatorNOT ESTABLISHED
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Body Length1.750 INCHES MAXIMUM IN
Body Width1.265 INCHES MAXIMUM IN
Terminal Type and Quantity7 TAB, SOLDER LUG
Winding Operating Voltage40.00 AC VOLTS NOMINAL AND 75.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length0.890 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Maximum Operating Temp100.0 CELSIUS DEGC
Center to Center Distance Between Mounting Facilities Parallel to Width0.890 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Current22.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage1.60 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5995-01-157-812827604 INTERCHANGEABLE
Cable Assembly,radio Frequency
Viant Collegeville Llc
5905-01-187-740328950 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Hamilton Sundstrand Corporation Dba Collins Aerospace
5340-01-283-167027604 INTERCHANGEABLE
Plunger,quick Release
Jergens Inc Div Tooling Components Division
5305-01-556-621127604 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
28950 Freed Transformer Co (USA)
27604 Emerson Electric Co White-Rodgers Div (USA)
674-1018-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
5995-01-157-8128INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
27604
5905-01-187-7403INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
28950
5340-01-283-1670INTERCHANGEABLE
PLUNGER,QUICK RELEASE
27604
5305-01-556-6211INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
27604

Frequently Asked Questions

What is NSN 5950-00-615-5101?

NSN 5950-00-615-5101 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 5950-00-615-5101?

NSN 5950-00-615-5101 has 3 cross-referenced part numbers: 28950 (Freed Transformer Co), 27604 (Emerson Electric Co White-Rodgers Div), 674-1018-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5950-00-615-5101?

There are 4 known substitutes for 5950-00-615-5101: 5995-01-157-8128, 5905-01-187-7403, 5340-01-283-1670 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28950?

Key specifications for 28950: Inclosure Type: HERMETICALLY SEALED; Reliability Indicator: NOT ESTABLISHED; Overall Height: 2.000 INCHES MAXIMUM IN; Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. 19 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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