PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A42251Transformer,power

Vdo Control Systems Inc · NSN 5950-01-169-0025 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-169-0025 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-169-0025. Primary manufacturer part number: A42251.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: FULLY INCLOSED
  • Winding Operating Current: 1.9 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Maximum Transformer Power Rating: 65.0 VOLT-AMPERE 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 5950-01-169-0025, 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 Vdo Control Systems Inc. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-169-0025
Primary Part NumberA42251
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerVdo Control Systems Inc
StatusACTIVE
Inclosure TypeFULLY INCLOSED
Winding Operating Current1.9 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Maximum Transformer Power Rating65.0 VOLT-AMPERE SINGLE COMPONENT
Winding Operating Current760.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length1.950 INCHES NOMINAL IN
Winding Operating Current278.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Current51.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current62.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Maximum Operating Temp130.0 CELSIUS DEGC
Body Height1.560 INCHES NOMINAL IN
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage249.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage17.40 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage25.40 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Body Width1.570 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.185 INCHES NOMINAL SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Terminal Type and Quantity10 PIN
Winding Operating Voltage5.50 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5895-00-320-897043187 INTERCHANGEABLE
Duct Assembly,cold
L3harris Technologies, Inc Div Space & Airborne Systems
2815-00-607-298143187 INTERCHANGEABLE
Valve,poppet,engine
Cummins Inc.
5950-00-649-83499166331 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5120-01-398-7689 INTERCHANGEABLE
Handle,socket Wrench
Cross-Reference Index
Part NumberManufacturer
A42251 Vdo Control Systems Inc (USA)
EA995T2A Magnetic Circuit Elements Inc Dba Magnetic Circuit Elements Inc (USA)
EA995T2 Magnetic Circuit Elements Inc Dba Magnetic Circuit Elements Inc (USA)
43187 Coast/advanced Chip Magnetics, Inc. (USA)
Related Parts
5895-00-320-8970INTERCHANGEABLE
DUCT ASSEMBLY,COLD
43187
2815-00-607-2981INTERCHANGEABLE
VALVE,POPPET,ENGINE
43187
5950-00-649-8349INTERCHANGEABLE
TRANSFORMER,POWER
9166331
5120-01-398-7689INTERCHANGEABLE
HANDLE,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5950-01-169-0025?

NSN 5950-01-169-0025 is a Transformer,power, manufactured by Vdo Control Systems Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-169-0025?

NSN 5950-01-169-0025 has 4 cross-referenced part numbers: A42251 (Vdo Control Systems Inc), EA995T2A (Magnetic Circuit Elements Inc Dba Magnetic Circuit Elements Inc), EA995T2 (Magnetic Circuit Elements Inc Dba Magnetic Circuit Elements Inc), 43187 (Coast/advanced Chip Magnetics, Inc.).

What NSN replaces 5950-01-169-0025?

There are 4 known substitutes for 5950-01-169-0025: 5895-00-320-8970, 2815-00-607-2981, 5950-00-649-8349 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A42251?

Key specifications for A42251: Inclosure Type: FULLY INCLOSED; Winding Operating Current: 1.9 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Function and Quantity: 1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT. 26 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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