PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

781-1Transformer,power

Electronic Transformer Corp Div Electronic Transformer Corporation · NSN 5950-00-645-8423 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-8423 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-8423. Primary manufacturer part number: 781-1.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Width: 3.750 INCHES NOMINAL IN
  • Terminal Type and Quantity: 5 STANDOFF, SOLDER LUG
  • Body Length: 4.468 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-645-8423, 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 Electronic Transformer Corp Div Electronic Transformer Corporation. Government technical data includes 14 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-8423
Primary Part Number781-1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerElectronic Transformer Corp Div Electronic Transformer Corporation
StatusACTIVE
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Width3.750 INCHES NOMINAL IN
Terminal Type and Quantity5 STANDOFF, SOLDER LUG
Body Length4.468 INCHES NOMINAL IN
Winding Operating Voltage10.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.812 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height3.500 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5950-00-043-0393712010-035 INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Div Rmd Strategic
5935-00-204-581978-11 INTERCHANGEABLE
Jack,tip
Amphenol Corp Div Amphenol Aerospace Operations
7050-00-315-0345 INTERCHANGEABLE
Processor,informati
5342-00-316-4762 INTERCHANGEABLE
Bracket,starting Mo
5950-00-476-3426890086 INTERCHANGEABLE
Transformer,pulse
Bae Systems Information and Electronic Systems Integration Inc.
5310-00-515-8081J1073 INTERCHANGEABLE
Washer,flat
Joslyn Corp
6520-00-554-8150781-1 INTERCHANGEABLE
Scissors,collar and Crown
Acme Precision Surgical Inc Dba a & P Surgical Co
5998-01-076-544139-1534-001 INTERCHANGEABLE
Circuit Card Assembly
Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc
5935-01-096-54937811 INTERCHANGEABLE
Connector
Crown Audio, Inc. Dba Crown International
5305-01-172-20037811 INTERCHANGEABLE
Screw,cap,hexagon Head
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
Cross-Reference Index
Part NumberManufacturer
781-1 PRIMARY Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
Related Parts
5950-00-043-0393INTERCHANGEABLE
COIL,RADIO FREQUENCY
712010-035
5935-00-204-5819INTERCHANGEABLE
JACK,TIP
78-11
7050-00-315-0345INTERCHANGEABLE
PROCESSOR,INFORMATI
5342-00-316-4762INTERCHANGEABLE
BRACKET,STARTING MO
5950-00-476-3426INTERCHANGEABLE
TRANSFORMER,PULSE
890086
5310-00-515-8081INTERCHANGEABLE
WASHER,FLAT
J1073
6520-00-554-8150INTERCHANGEABLE
SCISSORS,COLLAR AND CROWN
781-1
5998-01-076-5441INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
39-1534-001
5935-01-096-5493INTERCHANGEABLE
CONNECTOR
7811
5305-01-172-2003INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
7811
3460-01-655-6383INTERCHANGEABLE
COLLET,MACHINE

Frequently Asked Questions

What is NSN 5950-00-645-8423?

NSN 5950-00-645-8423 is a Transformer,power, manufactured by Electronic Transformer Corp Div Electronic Transformer Corporation, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-8423?

NSN 5950-00-645-8423 has 1 cross-referenced part number: 781-1 (Electronic Transformer Corp Div Electronic Transformer Corporation).

What NSN replaces 5950-00-645-8423?

There are 11 known substitutes for 5950-00-645-8423: 5950-00-043-0393, 5935-00-204-5819, 7050-00-315-0345 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 781-1?

Key specifications for 781-1: Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP; Special Features: CASE METAL MATERIAL. 15 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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