PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78989Transformer,power

National Security Agency · NSN 5950-00-625-6936 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-625-6936 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-625-6936. Primary manufacturer part number: 78989.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 930.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Winding Operating Voltage: 670.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Winding Operating Current: 50.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY
  • Body Width: 4.750 INCHES NOMINAL IN
  • Winding Operating Voltage: 230.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 3.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER 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 5950-00-625-6936, 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 National Security Agency. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5950-00-625-6936
Primary Part Number78989
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNational Security Agency
StatusCANCELLED
Winding Operating Voltage930.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage670.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Current50.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY
Body Width4.750 INCHES NOMINAL IN
Winding Operating Voltage230.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
Center to Center Distance Between Mounting Facilities Parallel to Width3.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length4.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity2 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Winding Operating Current20.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage670.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Terminal Type and Quantity16 SOLDER STUD
Inclosure TypeHERMETICALLY SEALED
Body Height6.250 INCHES NOMINAL IN
Winding Operating Current400.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage600.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current20.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Thread Quantity Per Inch20 SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5360-00-075-118778989 INTERCHANGEABLE
Spring,helical,compression
Triumph Engine Control Systems Llc
5915-00-156-7799 INTERCHANGEABLE
Filter,radio Frequency Interfere
5935-00-173-6111 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-173-72851299 INTERCHANGEABLE
Connector,receptacle,electrical
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5330-00-196-5350 INTERCHANGEABLE
Packing,preformed
5935-00-259-0012SC-B-555894 INTERCHANGEABLE
Plate,retaining,electrical Conne
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5360-00-314-719428129 INTERCHANGEABLE
Spring,helical,compression
Leslie Controls, Inc. Dba Leslie Controls Inc
2805-00-329-32064504705 INTERCHANGEABLE
Valve,e,haust
Agco Corp Parts Opn
5930-00-405-8379 INTERCHANGEABLE
Switch,push Light I
2520-00-737-83101299 INTERCHANGEABLE
Washer Transmission
Clark Material Handling Company
Cross-Reference Index
Part NumberManufacturer
28129 Freed Transformer Co (USA)
78989 Baltimore Transformer Co (USA)
1299 Dietz Design Inc (USA)
78989 PRIMARY National Security Agency (USA)
Related Parts
5360-00-075-1187INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
78989
5915-00-156-7799INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
5935-00-173-6111INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-173-7285INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1299
5330-00-196-5350INTERCHANGEABLE
PACKING,PREFORMED
5935-00-259-0012INTERCHANGEABLE
PLATE,RETAINING,ELECTRICAL CONNE
SC-B-555894
5360-00-314-7194INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
28129
2805-00-329-3206INTERCHANGEABLE
VALVE,E,HAUST
4504705
5930-00-405-8379INTERCHANGEABLE
SWITCH,PUSH LIGHT I
2520-00-737-8310INTERCHANGEABLE
WASHER TRANSMISSION
1299
3020-00-797-2273INTERCHANGEABLE
PULLEY,GROOVE
28129
6685-00-837-6194INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING

Frequently Asked Questions

What is NSN 5950-00-625-6936?

NSN 5950-00-625-6936 is a Transformer,power, manufactured by National Security Agency, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-625-6936?

NSN 5950-00-625-6936 has 4 cross-referenced part numbers: 28129 (Freed Transformer Co), 78989 (Baltimore Transformer Co), 1299 (Dietz Design Inc), 78989 (National Security Agency).

What NSN replaces 5950-00-625-6936?

There are 12 known substitutes for 5950-00-625-6936: 5360-00-075-1187, 5915-00-156-7799, 5935-00-173-6111 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 78989?

Key specifications for 78989: Winding Operating Voltage: 930.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY; Winding Operating Voltage: 670.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY; Winding Operating Current: 50.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY. 25 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-625-6936 still in active supply?

NSN 5950-00-625-6936 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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