PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T3665Transformer,power

Keltron Corporation · NSN 5950-00-071-7719 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-071-7719 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-071-7719. Primary manufacturer part number: T3665.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Mounting Method: TERMINAL SINGLE GROUP
  • Terminal Type and Quantity: 9 WIRE LEAD
  • Inclosure Type: FULLY INCLOSED
  • 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 5950-00-071-7719, 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 Keltron Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-071-7719
Primary Part NumberT3665
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerKeltron Corporation
StatusCANCELLED
Frequency Rating55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Voltage15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Mounting MethodTERMINAL SINGLE GROUP
Terminal Type and Quantity9 WIRE LEAD
Inclosure TypeFULLY INCLOSED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage108.00 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL AND 132.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Winding Operating Current1.5 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current250.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Body Outside Diameter2.125 INCHES NOMINAL IN
Body Length2.812 INCHES NOMINAL IN
Winding Operating Voltage9.25 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4320-00-319-4916CV31S1701-336230PC63 INTERCHANGEABLE
Barrel,cylinder
Naval Ship Systems Command
4810-00-336-950937346 INTERCHANGEABLE
Seat,valve
Eaton Aerospace, Llc Dba Jackson South
2990-00-454-948448161 INTERCHANGEABLE
Pipe,exhaust
Walker Mfg Co
Cross-Reference Index
Part NumberManufacturer
T3665 Keltron Corporation (USA)
48161 L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
T3665 Fil-Coil International Llc (USA)
AE7982 Atlas Engineering Co Inc (USA)
Related Parts
4320-00-319-4916INTERCHANGEABLE
BARREL,CYLINDER
CV31S1701-336230PC63
4810-00-336-9509INTERCHANGEABLE
SEAT,VALVE
37346
2990-00-454-9484INTERCHANGEABLE
PIPE,EXHAUST
48161

Frequently Asked Questions

What is NSN 5950-00-071-7719?

NSN 5950-00-071-7719 is a Transformer,power, manufactured by Keltron Corporation, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-071-7719?

NSN 5950-00-071-7719 has 4 cross-referenced part numbers: T3665 (Keltron Corporation), 48161 (L3harris Technologies, Inc. Div Space and Airborne Systems), T3665 (Fil-Coil International Llc), AE7982 (Atlas Engineering Co Inc).

What NSN replaces 5950-00-071-7719?

There are 3 known substitutes for 5950-00-071-7719: 4320-00-319-4916, 4810-00-336-9509, 2990-00-454-9484. Verify interchangeability with system specifications before substitution.

What are the specifications of T3665?

Key specifications for T3665: Frequency Rating: 55.0 HERTZ MINIMUM AND 65.0 HERTZ MAXIMUM SINGLE COMPONENT; Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT; Winding Operating Voltage: 15.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY; Mounting Method: TERMINAL SINGLE GROUP. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-071-7719 still in active supply?

NSN 5950-00-071-7719 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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