PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TR1228Transformer,power

Bae Systems Information and Electronic Systems Integration Inc. · NSN 5950-00-518-3640 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-518-3640 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-518-3640. Primary manufacturer part number: TR1228.
Features
  • Transformer,power — FSC 5950
  • Body Height: 4.250 INCHES NOMINAL IN
  • Terminal Type and Quantity: 4 STANDOFF, SOLDER LUG
  • Reliability Indicator: NOT ESTABLISHED
  • Body Length: 2.938 INCHES NOMINAL IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.000 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 5950-00-518-3640, 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 Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-518-3640
Primary Part NumberTR1228
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusACTIVE
Body Height4.250 INCHES NOMINAL IN
Terminal Type and Quantity4 STANDOFF, SOLDER LUG
Reliability IndicatorNOT ESTABLISHED
Body Length2.938 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Current3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Width2.562 INCHES NOMINAL IN
Mounting Facility Quantity4 SINGLE GROUP
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Voltage12.60 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Frequency Rating50.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Inclosure TypeHERMETICALLY SEALED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5133-00-262-2178 INTERCHANGEABLE
Drill,twist
6620-00-346-035620645 INTERCHANGEABLE
Shaft,oil Pinion
Meggitt (new Hampshire), Inc
5330-00-384-878220645 INTERCHANGEABLE
Gasket
Eaton Aerospace, Llc Dba Jackson South
5305-00-434-4379 INTERCHANGEABLE
Screw,nylon
4310-00-468-0302 INTERCHANGEABLE
Cover
1680-00-673-3199W20645 INTERCHANGEABLE
Screw,windshield Wi
Emerson Electric Co Alco Controls Div
1560-01-147-722410-30191-24 INTERCHANGEABLE
Latch Assembly,aircraft
The Boeing Company Div Defense
3130-01-194-0859 INTERCHANGEABLE
Cap,pillow Block
4810-01-229-552120645-00/POPPET INTERCHANGEABLE
Stem,fluid Valve
Real-Time Laboratories, Llc
5975-01-298-3732206-45 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
Cross-Reference Index
Part NumberManufacturer
TR1228 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. (USA)
TR1228A Bae Systems Information and Electronic Systems Integration Inc. (USA)
20645 Freed Transformer Co (USA)
Related Parts
5133-00-262-2178INTERCHANGEABLE
DRILL,TWIST
6620-00-346-0356INTERCHANGEABLE
SHAFT,OIL PINION
20645
5330-00-384-8782INTERCHANGEABLE
GASKET
20645
5305-00-434-4379INTERCHANGEABLE
SCREW,NYLON
4310-00-468-0302INTERCHANGEABLE
COVER
1680-00-673-3199INTERCHANGEABLE
SCREW,WINDSHIELD WI
W20645
1560-01-147-7224INTERCHANGEABLE
LATCH ASSEMBLY,AIRCRAFT
10-30191-24
3130-01-194-0859INTERCHANGEABLE
CAP,PILLOW BLOCK
4810-01-229-5521INTERCHANGEABLE
STEM,FLUID VALVE
20645-00/POPPET
5975-01-298-3732INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
206-45
6515-01-360-5831INTERCHANGEABLE
SCREW,BONE
206.45

Frequently Asked Questions

What is NSN 5950-00-518-3640?

NSN 5950-00-518-3640 is a Transformer,power, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-518-3640?

NSN 5950-00-518-3640 has 3 cross-referenced part numbers: TR1228 (Bae Systems Information and Electronic Systems Integration Inc.), TR1228A (Bae Systems Information and Electronic Systems Integration Inc.), 20645 (Freed Transformer Co).

What NSN replaces 5950-00-518-3640?

There are 11 known substitutes for 5950-00-518-3640: 5133-00-262-2178, 6620-00-346-0356, 5330-00-384-8782 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TR1228?

Key specifications for TR1228: Body Height: 4.250 INCHES NOMINAL IN; Terminal Type and Quantity: 4 STANDOFF, SOLDER LUG; Reliability Indicator: NOT ESTABLISHED; Body Length: 2.938 INCHES NOMINAL 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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