PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

890521Transformer,power

Bae Systems Information and Electronic Systems Integration Inc. · NSN 5950-00-904-1553 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-904-1553 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-904-1553. Primary manufacturer part number: 890521.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Power Rating: 26.0 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 9 SECONDARY SINGLE COMPONENT
  • Winding Operating Current: 1.1 AMPERES DC NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Winding Power Rating: 31.2 VOLTS-AMPERES SINGLE COMPONENT THIRD SECONDARY
  • Maximum Operating Temp: 130.0 CELSIUS DEGC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-904-1553, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-904-1553
Primary Part Number890521
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Power Rating26.0 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 9 SECONDARY SINGLE COMPONENT
Winding Operating Current1.1 AMPERES DC NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Power Rating31.2 VOLTS-AMPERES SINGLE COMPONENT THIRD SECONDARY
Maximum Operating Temp130.0 CELSIUS DEGC
Winding Operating Current1.1 AMPERES DC NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width3.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length6.000 INCHES MAXIMUM IN
Body Height7.000 INCHES MAXIMUM IN
Winding Operating Voltage23.60 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Winding Power Rating31.2 VOLTS-AMPERES SINGLE COMPONENT FOURTH SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage44.50 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Voltage44.50 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage109.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL AND 126.00 AC VOLTS NOMINAL AND 132.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width5.000 INCHES MAXIMUM IN
Winding Operating Voltage23.60 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity24 SOLDER STUD
Frequency Rating57.0 HERTZ MINIMUM AND 63.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Current700.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Power Rating26.0 VOLTS-AMPERES SINGLE COMPONENT SECOND SECONDARY
Inclosure TypeHERMETICALLY SEALED
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6630-00-242-4459 INTERCHANGEABLE
Tester,battery Electrolyte Solut
5360-00-478-675840941 INTERCHANGEABLE
Spring,helical,torsion
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
1680-01-043-681770-057-1 INTERCHANGEABLE
Handle Assembly,key
Bell Textron Inc
6150-01-355-4513890521-0002 INTERCHANGEABLE
Cable Assembly,printed,flexible
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
6240-01-504-926940941 INTERCHANGEABLE
Lamp,incandescent
Cooper Crouse-Hinds Llc
4720-01-633-1347890521 INTERCHANGEABLE
Tubing,nonmetallic
Paratech Inc
Cross-Reference Index
Part NumberManufacturer
890521 Bae Systems Information and Electronic Systems Integration Inc. (USA)
40941 Freed Transformer Co (USA)
Related Parts
6630-00-242-4459INTERCHANGEABLE
TESTER,BATTERY ELECTROLYTE SOLUT
5360-00-478-6758INTERCHANGEABLE
SPRING,HELICAL,TORSION
40941
1680-01-043-6817INTERCHANGEABLE
HANDLE ASSEMBLY,KEY
70-057-1
6150-01-355-4513INTERCHANGEABLE
CABLE ASSEMBLY,PRINTED,FLEXIBLE
890521-0002
6240-01-504-9269INTERCHANGEABLE
LAMP,INCANDESCENT
40941
4720-01-633-1347INTERCHANGEABLE
TUBING,NONMETALLIC
890521

Frequently Asked Questions

What is NSN 5950-00-904-1553?

NSN 5950-00-904-1553 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 5950-00-904-1553?

NSN 5950-00-904-1553 has 2 cross-referenced part numbers: 890521 (Bae Systems Information and Electronic Systems Integration Inc.), 40941 (Freed Transformer Co).

What NSN replaces 5950-00-904-1553?

There are 6 known substitutes for 5950-00-904-1553: 6630-00-242-4459, 5360-00-478-6758, 1680-01-043-6817 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 890521?

Key specifications for 890521: Reliability Indicator: NOT ESTABLISHED; Winding Power Rating: 26.0 VOLTS-AMPERES SINGLE COMPONENT FIRST SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Length: 4.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Function and Quantity: 1 PRIMARY AND 9 SECONDARY SINGLE COMPONENT. 30 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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