PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST3478Transformer,power

Sterling Transformer Corp · NSN 5950-00-064-1417 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-064-1417 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-064-1417. Primary manufacturer part number: ST3478.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 190.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Thread Quantity Per Inch: 20 SINGLE GROUP
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Operating Voltage: 155.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Reliability Indicator: NOT ESTABLISHED
  • Body Height: 5.750 INCHES MAXIMUM IN
  • Winding Operating Current: 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-064-1417, 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 Sterling Transformer Corp. Government technical data includes 24 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-064-1417
Primary Part NumberST3478
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerSterling Transformer Corp
StatusACTIVE
Winding Operating Voltage190.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Thread Quantity Per Inch20 SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage155.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Reliability IndicatorNOT ESTABLISHED
Body Height5.750 INCHES MAXIMUM IN
Winding Operating Current300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Terminal Type and Quantity10 WIRE LEAD
Body Length4.750 INCHES MAXIMUM IN
Frequency Rating50.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current100.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Body Width4.375 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity2 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Maximum Operating Temp65.0 CELSIUS DEGC
Winding Operating Voltage140.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Inclosure TypeOPEN
Center to Center Distance Between Mounting Facilities Parallel to Length3.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current600.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5905-00-062-1329570894 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Herley Chicago Dba Stewart Warner Electronics
5340-00-619-6855432-5-6 INTERCHANGEABLE
Clamp,loop
Transdigm Inc Dba Adel Wiggins Group Div Adel Wiggins
2530-00-848-1270 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
6605-01-186-1511130992 INTERCHANGEABLE
Gear and Slip Ring
Astronautics Corporation of America
6150-01-337-044543256 INTERCHANGEABLE
Cable Assembly,power,electrical
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
ST3478 Sterling Transformer Corp (USA)
C14582 Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
172287 Voltampere Corp (USA)
43256 Coast/advanced Chip Magnetics, Inc. (USA)
B130992 Rohde & Schwarz Usa, Inc. (USA)
130992 Rohde & Schwarz Usa, Inc. (USA)
Related Parts
5905-00-062-1329INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
570894
5340-00-619-6855INTERCHANGEABLE
CLAMP,LOOP
432-5-6
2530-00-848-1270INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
6605-01-186-1511INTERCHANGEABLE
GEAR AND SLIP RING
130992
6150-01-337-0445INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
43256

Frequently Asked Questions

What is NSN 5950-00-064-1417?

NSN 5950-00-064-1417 is a Transformer,power, manufactured by Sterling Transformer Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-064-1417?

NSN 5950-00-064-1417 has 6 cross-referenced part numbers: ST3478 (Sterling Transformer Corp), C14582 (Electronic Transformer Corp Div Electronic Transformer Corporation), 172287 (Voltampere Corp), 43256 (Coast/advanced Chip Magnetics, Inc.), B130992 (Rohde & Schwarz Usa, Inc.) and 1 more.

What NSN replaces 5950-00-064-1417?

There are 5 known substitutes for 5950-00-064-1417: 5905-00-062-1329, 5340-00-619-6855, 2530-00-848-1270 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of ST3478?

Key specifications for ST3478: Winding Operating Voltage: 190.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY; Thread Quantity Per Inch: 20 SINGLE GROUP; Mounting Facility Quantity: 4 SINGLE GROUP; Winding Operating Voltage: 155.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY. 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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