PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

191701Transformer,audio Frequency

Electronic Transformer Corp Div Electronic Transformer Corporation · NSN 5950-00-646-2997 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-2997 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-2997. Primary manufacturer part number: 191701.
Features
  • Transformer,audio Frequency — FSC 5950
  • Winding Operating Current: 4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Hole Diameter: 0.120 INCHES NOMINAL SINGLE GROUP IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Length: 1.375 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 100000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Impedance Rating in Ohms: 15000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-646-2997, 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 Electronic Transformer Corp Div Electronic Transformer Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-646-2997
Primary Part Number191701
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerElectronic Transformer Corp Div Electronic Transformer Corporation
StatusCANCELLED
Winding Operating Current4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting Hole Diameter0.120 INCHES NOMINAL SINGLE GROUP IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length1.375 INCHES NOMINAL IN
Impedance Rating in Ohms100000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting Facility Quantity2 SINGLE GROUP
Impedance Rating in Ohms15000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Distance Between Mounting Facility Centers1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating150.0 HERTZ MINIMUM AND 4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Inclosure TypeHERMETICALLY SEALED
Terminal Type and Quantity5 WIRE HOOK
Body Outside Diameter0.969 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
6135-00-043-4307246 INTERCHANGEABLE
Battery,nonrechargeable
Eveready Battery Co Inc
5975-00-091-9129191-701 INTERCHANGEABLE
Ring,electrical Bonding
Cmc Electronics Inc
5930-00-700-2195191701 INTERCHANGEABLE
Switch,rotary
Raytheon Company
5998-01-018-8490 INTERCHANGEABLE
Circuit Card Assembly
5915-01-028-40882888000-1 INTERCHANGEABLE
Filter,radio Frequency Interfere
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5915-01-692-462819170-1 INTERCHANGEABLE
Filter,band Pass
Microwave Filter Co Inc
Cross-Reference Index
Part NumberManufacturer
SMC120061 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
191701 PRIMARY Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
M1602 Microtran Co Inc (USA)
SMC120061 Lockheed Martin Corporation Div Rms (USA)
SMC120061 Applied Devices Corp (USA)
Related Parts
6135-00-043-4307INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
246
5975-00-091-9129INTERCHANGEABLE
RING,ELECTRICAL BONDING
191-701
5930-00-700-2195INTERCHANGEABLE
SWITCH,ROTARY
191701
5998-01-018-8490INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5915-01-028-4088INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
2888000-1
5915-01-692-4628INTERCHANGEABLE
FILTER,BAND PASS
19170-1

Frequently Asked Questions

What is NSN 5950-00-646-2997?

NSN 5950-00-646-2997 is a Transformer,audio Frequency, manufactured by Electronic Transformer Corp Div Electronic Transformer Corporation, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-646-2997?

NSN 5950-00-646-2997 has 5 cross-referenced part numbers: SMC120061 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 191701 (Electronic Transformer Corp Div Electronic Transformer Corporation), M1602 (Microtran Co Inc), SMC120061 (Lockheed Martin Corporation Div Rms), SMC120061 (Applied Devices Corp).

What NSN replaces 5950-00-646-2997?

There are 6 known substitutes for 5950-00-646-2997: 6135-00-043-4307, 5975-00-091-9129, 5930-00-700-2195 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 191701?

Key specifications for 191701: Winding Operating Current: 4.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Mounting Hole Diameter: 0.120 INCHES NOMINAL SINGLE GROUP IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Body Length: 1.375 INCHES NOMINAL IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-646-2997 still in active supply?

NSN 5950-00-646-2997 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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