PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K5440Transformer,power

Keytronics, Inc. Div Api Technologies Corp- Magnetics · NSN 5950-01-145-2494 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-145-2494 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-145-2494. Primary manufacturer part number: K5440.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Voltage: 13.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Winding Power Rating: 33.3 WATTS SINGLE COMPONENT THIRD SECONDARY
  • Winding Shielding Method: INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
  • Winding Operating Voltage: 7.30 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Winding Operating Current: 7.7 AMPERES DC NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Winding Power Rating: 56.3 WATTS SINGLE COMPONENT FOURTH SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-145-2494, 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 Keytronics, Inc. Div Api Technologies Corp- Magnetics. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-145-2494
Primary Part NumberK5440
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerKeytronics, Inc. Div Api Technologies Corp- Magnetics
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage13.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Power Rating33.3 WATTS SINGLE COMPONENT THIRD SECONDARY
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Winding Operating Voltage7.30 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Current7.7 AMPERES DC NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Power Rating56.3 WATTS SINGLE COMPONENT FOURTH SECONDARY
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Maximum Transformer Power Rating57.0 WATTS SINGLE COMPONENT
Winding Operating Voltage32.70 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Power Rating0.1 WATTS SINGLE COMPONENT ALL TERTIARY
Winding Operating Current852.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current2.5 AMPERES DC NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Current788.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT SECOND SECONDARY
Input-Output Phase RelationshipTHREE PHASE TO SINGLE PHASE AND THREE PHASE TO THREE PHASE SINGLE COMPONENT
Winding Operating Voltage27.90 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Power Rating22.0 WATTS SINGLE COMPONENT SECOND SECONDARY
Winding Function and Quantity1 PRIMARY AND 6 SECONDARY SINGLE COMPONENT
Transformer Winding Connection TypeWYE-DELTA
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Power Rating0.2 WATTS SINGLE COMPONENT FIFTH WINDING
Winding Power Rating27.9 WATTS SINGLE COMPONENT FIRST SECONDARY
Inclosure TypeFULLY INCLOSED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-129-946010359-SS-1032-7 INTERCHANGEABLE
Handle,bow
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5960-00-158-4841B5441A INTERCHANGEABLE
Electron Tube
Unisys Corporation Dba Unisys Corp
5315-00-234-1664MS24665-495 INTERCHANGEABLE
Pin,cotter
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5935-00-442-19475M1099-001 INTERCHANGEABLE
Connector,receptacle,electrical
The Boeing Company Div Defense
4320-00-558-0167 INTERCHANGEABLE
Spring Assembly,compensator
7025-00-617-0255703502 INTERCHANGEABLE
Magnetic Disk,data
Xidex Corp
6240-00-752-2424 INTERCHANGEABLE
Lamp,incandescent
2520-00-848-0530 INTERCHANGEABLE
Support
6625-01-034-3269MIS-28706/1TY2 INTERCHANGEABLE
Oscilloscope
Us Army Aviation and Missile Command
5950-01-038-1649292-7375-P1 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
R104120A Oeco, Llc (USA)
10132845 Nimikkeistokeskus Ncb Finland (FIN)
5440 Keytronics, Inc. Div Api Technologies Corp- Magnetics (USA)
7109054-001 Ge Aviation Systems Llc Dba Ge Aviation (USA)
S93A B G Laboratories Inc. (USA)
K5440 PRIMARY Keytronics, Inc. Div Api Technologies Corp- Magnetics (USA)
Related Parts
5340-00-129-9460INTERCHANGEABLE
HANDLE,BOW
10359-SS-1032-7
5960-00-158-4841INTERCHANGEABLE
ELECTRON TUBE
B5441A
5315-00-234-1664INTERCHANGEABLE
PIN,COTTER
MS24665-495
5935-00-442-1947INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5M1099-001
4320-00-558-0167INTERCHANGEABLE
SPRING ASSEMBLY,COMPENSATOR
7025-00-617-0255INTERCHANGEABLE
MAGNETIC DISK,DATA
703502
6240-00-752-2424INTERCHANGEABLE
LAMP,INCANDESCENT
2520-00-848-0530INTERCHANGEABLE
SUPPORT
6625-01-034-3269INTERCHANGEABLE
OSCILLOSCOPE
MIS-28706/1TY2
5950-01-038-1649INTERCHANGEABLE
TRANSFORMER,POWER
292-7375-P1
7125-01-084-6954INTERCHANGEABLE
CABINET,STORAGE
25300
6550-01-142-9474INTERCHANGEABLE
TEST STRIPS AND COLOR CHART,BILI
5440

Frequently Asked Questions

What is NSN 5950-01-145-2494?

NSN 5950-01-145-2494 is a Transformer,power, manufactured by Keytronics, Inc. Div Api Technologies Corp- Magnetics, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-145-2494?

NSN 5950-01-145-2494 has 6 cross-referenced part numbers: R104120A (Oeco, Llc), 10132845 (Nimikkeistokeskus Ncb Finland), 5440 (Keytronics, Inc. Div Api Technologies Corp- Magnetics), 7109054-001 (Ge Aviation Systems Llc Dba Ge Aviation), S93A (B G Laboratories Inc.) and 1 more.

What NSN replaces 5950-01-145-2494?

There are 12 known substitutes for 5950-01-145-2494: 5340-00-129-9460, 5960-00-158-4841, 5315-00-234-1664 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of K5440?

Key specifications for K5440: Reliability Indicator: NOT ESTABLISHED; Winding Operating Voltage: 13.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY; Winding Power Rating: 33.3 WATTS SINGLE COMPONENT THIRD SECONDARY; Winding Shielding Method: INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT. 24 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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