PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77C703655P001Transformer,power

Lockheed Martin Corporation Div Rms · NSN 5950-00-078-4433 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-078-4433 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-078-4433. Primary manufacturer part number: 77C703655P001.
Features
  • Transformer,power — FSC 5950
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.032 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inclosure Type: HERMETICALLY SEALED
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE 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 5950-00-078-4433, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-078-4433
Primary Part Number77C703655P001
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusACTIVE
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length1.032 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeHERMETICALLY SEALED
Winding Operating Voltage115.00 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL AND 125.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Thread Quantity Per Inch32 SINGLE GROUP
Body Height1.620 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.032 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity7 TAB, SOLDER LUG
Body Width1.620 INCHES NOMINAL IN
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Body Length2.375 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5960-00-193-5144 INTERCHANGEABLE
Electron Tube
5935-00-283-2950 INTERCHANGEABLE
Connector,plug,electrical
6640-00-486-0235 INTERCHANGEABLE
Oven,laboratory
2805-00-494-3585 INTERCHANGEABLE
Valve,poppet,engine
5950-00-547-8455 INTERCHANGEABLE
Transformer,power,s
2520-00-734-8148 INTERCHANGEABLE
Cover
5910-01-058-1129 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5910-01-246-3627 INTERCHANGEABLE
Capacitor,variable,air Dielectri
4820-01-492-56985851 INTERCHANGEABLE
Valve,gate
Hunt Valve Company, Inc.
5895-01-506-84605851 INTERCHANGEABLE
Modem,communications
Efficient Networks Inc
Cross-Reference Index
Part NumberManufacturer
9T35Y2022 General Electric Co Specialty Transformer Dept (USA)
77C703655P001 PRIMARY Lockheed Martin Corporation Div Rms (USA)
9T35Y2022 General Electric Company (USA)
77C703655P001 General Electric Company (USA)
5851 Precision Electronics, Inc (USA)
Related Parts
5960-00-193-5144INTERCHANGEABLE
ELECTRON TUBE
5935-00-283-2950INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
6640-00-486-0235INTERCHANGEABLE
OVEN,LABORATORY
2805-00-494-3585INTERCHANGEABLE
VALVE,POPPET,ENGINE
5950-00-547-8455INTERCHANGEABLE
TRANSFORMER,POWER,S
2520-00-734-8148INTERCHANGEABLE
COVER
5910-01-058-1129INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5910-01-246-3627INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
4820-01-492-5698INTERCHANGEABLE
VALVE,GATE
5851
5895-01-506-8460INTERCHANGEABLE
MODEM,COMMUNICATIONS
5851

Frequently Asked Questions

What is NSN 5950-00-078-4433?

NSN 5950-00-078-4433 is a Transformer,power, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-078-4433?

NSN 5950-00-078-4433 has 5 cross-referenced part numbers: 9T35Y2022 (General Electric Co Specialty Transformer Dept), 77C703655P001 (Lockheed Martin Corporation Div Rms), 9T35Y2022 (General Electric Company), 77C703655P001 (General Electric Company), 5851 (Precision Electronics, Inc).

What NSN replaces 5950-00-078-4433?

There are 10 known substitutes for 5950-00-078-4433: 5960-00-193-5144, 5935-00-283-2950, 6640-00-486-0235 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 77C703655P001?

Key specifications for 77C703655P001: Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT; Overall Length: 2.775 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.032 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 19 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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