PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1091AS139Transformer,power

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 5950-01-116-0905 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-116-0905 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-116-0905. Primary manufacturer part number: 1091AS139.
Features
  • Transformer,power — FSC 5950
  • Body Length: 2.600 INCHES MAXIMUM IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Terminal Type and Quantity: 7 TAB, SOLDER LUG
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Height: 3.700 INCHES MAXIMUM IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-116-0905, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-116-0905
Primary Part Number1091AS139
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Body Length2.600 INCHES MAXIMUM IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Terminal Type and Quantity7 TAB, SOLDER LUG
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Body Height3.700 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Voltage9.50 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width2.000 INCHES MAXIMUM IN
Winding Operating Voltage38.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length2.045 INCHES MINIMUM AND 2.055 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.395 INCHES MINIMUM AND 1.405 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Hole Diameter0.171 INCHES MINIMUM AND 0.178 INCHES MAXIMUM SINGLE GROUP IN
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeFULLY INCLOSED
Maximum Operating Temp105.0 CELSIUS DEGC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5998-00-003-913852875 INTERCHANGEABLE
Circuit Card Assembly
Cae Inc
5940-00-159-021310-420-2 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
4320-00-172-5688052875 INTERCHANGEABLE
Parts Kit,hydraulic Pump
Allianz Sweeper Company
4730-00-277-9175SAE J246 10-6 120202BA INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
5342-01-252-984752875 INTERCHANGEABLE
Swivel,boot
Aerol Llc
6220-01-319-975952875 INTERCHANGEABLE
Cover,rear
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
Cross-Reference Index
Part NumberManufacturer
52875 Standex Electronics, Inc. (USA)
1091AS139 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
1091AS139 Naval Air Warfare Center Aircraft Div (USA)
Related Parts
5998-00-003-9138INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
52875
5940-00-159-0213INTERCHANGEABLE
TERMINAL,STUD
10-420-2
4320-00-172-5688INTERCHANGEABLE
PARTS KIT,HYDRAULIC PUMP
052875
4730-00-277-9175INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J246 10-6 120202BA
5342-01-252-9847INTERCHANGEABLE
SWIVEL,BOOT
52875
6220-01-319-9759INTERCHANGEABLE
COVER,REAR
52875

Frequently Asked Questions

What is NSN 5950-01-116-0905?

NSN 5950-01-116-0905 is a Transformer,power, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-116-0905?

NSN 5950-01-116-0905 has 3 cross-referenced part numbers: 52875 (Standex Electronics, Inc.), 1091AS139 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1091AS139 (Naval Air Warfare Center Aircraft Div).

What NSN replaces 5950-01-116-0905?

There are 6 known substitutes for 5950-01-116-0905: 5998-00-003-9138, 5940-00-159-0213, 4320-00-172-5688 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1091AS139?

Key specifications for 1091AS139: Body Length: 2.600 INCHES MAXIMUM IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Terminal Type and Quantity: 7 TAB, SOLDER LUG; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP. 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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