PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

139C373H01Transformer,power

Northrop Grumman Support Services Corp · NSN 5950-00-599-7525 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-599-7525 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-599-7525. Primary manufacturer part number: 139C373H01.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Body Height: 2.180 INCHES MAXIMUM IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Body Width: 2.000 INCHES MAXIMUM IN
  • Inclosure Type: FULLY INCLOSED
  • Winding Operating Current: 7.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-599-7525, 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 Northrop Grumman Support Services Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN5950-00-599-7525
Primary Part Number139C373H01
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Height2.180 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Width2.000 INCHES MAXIMUM IN
Inclosure TypeFULLY INCLOSED
Winding Operating Current7.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Body Length2.250 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.310 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Winding Operating Voltage120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity4 SINGLE GROUP
Terminal Type and Quantity4 TAB, SOLDER LUG
Mounting Slot Width0.160 INCHES NOMINAL SINGLE GROUP IN
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length1.440 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5995-00-134-8453608-921-010-000 INTERCHANGEABLE
Cord Assembly,electrical,branche
Roanwell, Llc
3110-00-142-4395 INTERCHANGEABLE
Cup,tapered Roller Bearing
5999-00-511-9808 INTERCHANGEABLE
Contact,electrical
5998-00-789-809943273 INTERCHANGEABLE
Circuit Card Assembly
L3harris Technologies, Inc.
5360-00-869-0794 INTERCHANGEABLE
Spring,helical,torsion
3455-01-050-4791 INTERCHANGEABLE
Cutter,milling,end
3455-01-065-965151-10143 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
1270-01-184-297443273 INTERCHANGEABLE
Mirror Subassembly
Recon/optical, Inc. Dba Pacific Optical
6685-01-553-5851MC33-52 ITEM 21 INTERCHANGEABLE
Indicator,pressure
Circor Aerospace, Inc. Dba Circor Aerospace Inc
6520-01-705-865542880 INTERCHANGEABLE
Flux,soldering
Bird-X, Inc. Dba Yates Motloid Div Bird-X
Cross-Reference Index
Part NumberManufacturer
139C373H01 Omega Associates, Inc. Dba Omega Associates Inc (USA)
139C373H01 PRIMARY Northrop Grumman Support Services Corp (USA)
PEI 7679 Precision Electronics, Inc (USA)
43273 Coast/advanced Chip Magnetics, Inc. (USA)
139C373H01 Berkshire Transformer (USA)
42880 Freed Transformer Co (USA)
139C373H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
5995-00-134-8453INTERCHANGEABLE
CORD ASSEMBLY,ELECTRICAL,BRANCHE
608-921-010-000
3110-00-142-4395INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
5999-00-511-9808INTERCHANGEABLE
CONTACT,ELECTRICAL
5998-00-789-8099INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
43273
5360-00-869-0794INTERCHANGEABLE
SPRING,HELICAL,TORSION
3455-01-050-4791INTERCHANGEABLE
CUTTER,MILLING,END
3455-01-065-9651INTERCHANGEABLE
CUTTER,MILLING,END
51-10143
1270-01-184-2974INTERCHANGEABLE
MIRROR SUBASSEMBLY
43273
6685-01-553-5851INTERCHANGEABLE
INDICATOR,PRESSURE
MC33-52 ITEM 21
6520-01-705-8655INTERCHANGEABLE
FLUX,SOLDERING
42880

Frequently Asked Questions

What is NSN 5950-00-599-7525?

NSN 5950-00-599-7525 is a Transformer,power, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-599-7525?

NSN 5950-00-599-7525 has 7 cross-referenced part numbers: 139C373H01 (Omega Associates, Inc. Dba Omega Associates Inc), 139C373H01 (Northrop Grumman Support Services Corp), PEI 7679 (Precision Electronics, Inc), 43273 (Coast/advanced Chip Magnetics, Inc.), 139C373H01 (Berkshire Transformer) and 2 more.

What NSN replaces 5950-00-599-7525?

There are 10 known substitutes for 5950-00-599-7525: 5995-00-134-8453, 3110-00-142-4395, 5999-00-511-9808 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 139C373H01?

Key specifications for 139C373H01: Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT; Body Height: 2.180 INCHES MAXIMUM IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY. 18 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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