PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C25856-1Transformer,power

Ampex Systems Corp · NSN 5950-00-755-4136 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-755-4136 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-755-4136. Primary manufacturer part number: C25856-1.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Voltage: 1.50 AC KILOVOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
  • Thread Quantity Per Inch: 20 SINGLE GROUP
  • Terminal Type and Quantity: 7 SOLDER STUD
  • Nominal Thread Size: 0.250 INCHES SINGLE GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 4.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-755-4136, 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 Ampex Systems Corp. Government technical data includes 20 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-755-4136
Primary Part NumberC25856-1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAmpex Systems Corp
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage1.50 AC KILOVOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Thread Quantity Per Inch20 SINGLE GROUP
Terminal Type and Quantity7 SOLDER STUD
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length4.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Current525.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Body Height5.500 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage115.00 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Center to Center Distance Between Mounting Facilities Parallel to Width3.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating40.0 HERTZ MINIMUM AND 400.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length4.312 INCHES NOMINAL IN
Body Width5.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5940-00-246-27702482-1 INTERCHANGEABLE
Terminal,lug
Entron Industries Limited Partnership Dba Entron Industries Property Div
5960-00-274-4184 INTERCHANGEABLE
Electron Tube
4820-00-287-33246264N INTERCHANGEABLE
Valve,globe
Henry Technologies, Inc.
5865-00-312-047162-6-4 INTERCHANGEABLE
Coupling,fle,ible
Allard Nazarian Group, Inc. Dba Granite State Manufacturing
4810-00-497-0487W1121-12-20 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
5950-01-136-405816610065-003 INTERCHANGEABLE
Coil,radio Frequency
Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services
5950-01-276-54717071750-18 INTERCHANGEABLE
Reactor
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
5895-01-658-09186264 INTERCHANGEABLE
Panel,control,electrical-Electro
Commerce Controls Inc Dba Commerce Business Solutions, Llc.
Cross-Reference Index
Part NumberManufacturer
C25856-1 Ampex Systems Corp (USA)
6264 Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems (USA)
Related Parts
5940-00-246-2770INTERCHANGEABLE
TERMINAL,LUG
2482-1
5960-00-274-4184INTERCHANGEABLE
ELECTRON TUBE
4820-00-287-3324INTERCHANGEABLE
VALVE,GLOBE
6264N
5865-00-312-0471INTERCHANGEABLE
COUPLING,FLE,IBLE
62-6-4
4810-00-497-0487INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
W1121-12-20
5950-01-136-4058INTERCHANGEABLE
COIL,RADIO FREQUENCY
16610065-003
5950-01-276-5471INTERCHANGEABLE
REACTOR
7071750-18
5895-01-658-0918INTERCHANGEABLE
PANEL,CONTROL,ELECTRICAL-ELECTRO
6264

Frequently Asked Questions

What is NSN 5950-00-755-4136?

NSN 5950-00-755-4136 is a Transformer,power, manufactured by Ampex Systems Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-755-4136?

NSN 5950-00-755-4136 has 2 cross-referenced part numbers: C25856-1 (Ampex Systems Corp), 6264 (Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems).

What NSN replaces 5950-00-755-4136?

There are 8 known substitutes for 5950-00-755-4136: 5940-00-246-2770, 5960-00-274-4184, 4820-00-287-3324 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C25856-1?

Key specifications for C25856-1: Reliability Indicator: NOT ESTABLISHED; Winding Operating Voltage: 1.50 AC KILOVOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT; Thread Quantity Per Inch: 20 SINGLE GROUP. 20 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com