PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23687Transformer,power

Freed Transformer Co · NSN 5950-00-645-5029 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-5029 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-5029. Primary manufacturer part number: 23687.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Winding Operating Voltage: 26.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Operating Current: 3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Winding Operating Current: 500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-645-5029, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-5029
Primary Part Number23687
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusCANCELLED
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage26.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Current3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Current500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length2.219 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Current30.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Body Height3.250 INCHES NOMINAL IN
Mounting MethodUNTHREADED STUD SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Body Width2.562 INCHES NOMINAL IN
Winding Operating Voltage650.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Terminal Type and Quantity9 TAB, SOLDER LUG
Inclosure TypeOPEN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
9540-00-149-6344 INTERCHANGEABLE
Angle,structural
5950-00-154-0101 INTERCHANGEABLE
Transformer,power
5330-00-204-5269 INTERCHANGEABLE
Seal
9540-01-072-0173K10A42T8511 INTERCHANGEABLE
Angle,structural
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
5998-01-227-8001 INTERCHANGEABLE
Circuit Card Assembly
5340-01-300-233885122 INTERCHANGEABLE
Mount,lower
Brunswick Corp Dba Mercury Marine Div Mercury Marine
4710-01-319-505285122 INTERCHANGEABLE
Tube Assembly,metal
Stewart & Stevenson Power Products Llc
5980-01-346-949785122-G031A INTERCHANGEABLE
Light Emitting Diode
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5980-01-393-724185122-G101A INTERCHANGEABLE
Light Emitting Diode
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
5980-01-426-278685122-R101A INTERCHANGEABLE
Light Emitting Diode
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
Cross-Reference Index
Part NumberManufacturer
23687 PRIMARY Freed Transformer Co (USA)
23687 Viking Technologies, Ltd. (USA)
85-122 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
Related Parts
9540-00-149-6344INTERCHANGEABLE
ANGLE,STRUCTURAL
5950-00-154-0101INTERCHANGEABLE
TRANSFORMER,POWER
5330-00-204-5269INTERCHANGEABLE
SEAL
9540-01-072-0173INTERCHANGEABLE
ANGLE,STRUCTURAL
K10A42T8511
5998-01-227-8001INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5340-01-300-2338INTERCHANGEABLE
MOUNT,LOWER
85122
4710-01-319-5052INTERCHANGEABLE
TUBE ASSEMBLY,METAL
85122
5980-01-346-9497INTERCHANGEABLE
LIGHT EMITTING DIODE
85122-G031A
5980-01-393-7241INTERCHANGEABLE
LIGHT EMITTING DIODE
85122-G101A
5980-01-426-2786INTERCHANGEABLE
LIGHT EMITTING DIODE
85122-R101A
5980-01-433-5688INTERCHANGEABLE
LIGHT EMITTING DIODE
85122-R111A
5980-01-441-4504INTERCHANGEABLE
LIGHT EMITTING DIODE
85122-G111A

Frequently Asked Questions

What is NSN 5950-00-645-5029?

NSN 5950-00-645-5029 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-5029?

NSN 5950-00-645-5029 has 3 cross-referenced part numbers: 23687 (Freed Transformer Co), 23687 (Viking Technologies, Ltd.), 85-122 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems).

What NSN replaces 5950-00-645-5029?

There are 12 known substitutes for 5950-00-645-5029: 9540-00-149-6344, 5950-00-154-0101, 5330-00-204-5269 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23687?

Key specifications for 23687: Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY; Winding Operating Voltage: 26.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY; Mounting Facility Quantity: 4 SINGLE GROUP; Winding Operating Current: 3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-5029 still in active supply?

NSN 5950-00-645-5029 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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