PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-1681Transformer,power

Tranex, Inc. · NSN 5950-00-222-7749 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-222-7749 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-222-7749. Primary manufacturer part number: 4-1681.
Features
  • Transformer,power — FSC 5950
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.300 INCHES MINIMUM AND 2.360 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Current: 261.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Winding Operating Current: 400.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Winding Function and Quantity: 2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM 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 5950-00-222-7749, 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 Tranex, Inc.. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-222-7749
Primary Part Number4-1681
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerTranex, Inc.
StatusACTIVE
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.300 INCHES MINIMUM AND 2.360 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current261.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current400.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Function and Quantity2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Frequency Rating50.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Width2.630 INCHES MAXIMUM IN
Winding Operating Voltage26.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Mounting MethodSLOT SINGLE GROUP
Winding Power Rating30.0 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Shielding MethodINTERNALLY SHIELDED SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Terminal Type and Quantity8 WIRE LEAD
Body Height3.130 INCHES MAXIMUM IN
Body Length3.310 INCHES MAXIMUM IN
Inclosure TypeFULLY INCLOSED
Mounting Slot Width0.150 INCHES MINIMUM AND 0.210 INCHES MAXIMUM SINGLE GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3020-00-050-68441770740 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-238-7940BD87 INTERCHANGEABLE
Washer,flat
Dresser, Llc
5365-00-790-369041681 INTERCHANGEABLE
Ring,light
Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
5950-01-028-66892889406-1 INTERCHANGEABLE
Transformer,audio Frequency
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5995-01-063-2242 INTERCHANGEABLE
Wiring Harness,branched
6105-01-167-7943 INTERCHANGEABLE
Motor,alternating Current
3040-01-437-144941681 INTERCHANGEABLE
Ear,cylinder Pipe
Kongsberg Maritime Sweden Ab
5930-01-508-758341-681 INTERCHANGEABLE
Switch,push-Pull
Thermo King Corporation Dba Phoenix Global Distirbution.
Cross-Reference Index
Part NumberManufacturer
4-1681 PRIMARY Tranex, Inc. (USA)
Related Parts
3020-00-050-6844INTERCHANGEABLE
GEAR,SPUR
1770740
5310-00-238-7940INTERCHANGEABLE
WASHER,FLAT
BD87
5365-00-790-3690INTERCHANGEABLE
RING,LIGHT
41681
5950-01-028-6689INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
2889406-1
5995-01-063-2242INTERCHANGEABLE
WIRING HARNESS,BRANCHED
6105-01-167-7943INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
3040-01-437-1449INTERCHANGEABLE
EAR,CYLINDER PIPE
41681
5930-01-508-7583INTERCHANGEABLE
SWITCH,PUSH-PULL
41-681

Frequently Asked Questions

What is NSN 5950-00-222-7749?

NSN 5950-00-222-7749 is a Transformer,power, manufactured by Tranex, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-222-7749?

NSN 5950-00-222-7749 has 1 cross-referenced part number: 4-1681 (Tranex, Inc.).

What NSN replaces 5950-00-222-7749?

There are 8 known substitutes for 5950-00-222-7749: 3020-00-050-6844, 5310-00-238-7940, 5365-00-790-3690 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-1681?

Key specifications for 4-1681: Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.970 INCHES MINIMUM AND 2.030 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.300 INCHES MINIMUM AND 2.360 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Operating Current: 261.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT FIRST SECONDARY. 21 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com