PartsTable TECHNICAL DATA SHEET
SEPTEMBER 2026Technical Data Sheet

1981452Transformer,audio Frequency

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-681-2266 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-681-2266 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-681-2266. Primary manufacturer part number: 1981452.
Features
  • Transformer,audio Frequency — FSC 5950
  • Distance Between Mounting Facility Centers: 0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Height: 0.688 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 700.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Body Length: 1.062 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 900.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Body Width: 0.938 INCHES NOMINAL IN
  • Primary to Secondary Turn Ratio: 1 TO 1 SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-681-2266, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-681-2266
Primary Part Number1981452
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Distance Between Mounting Facility Centers0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height0.688 INCHES NOMINAL IN
Impedance Rating in Ohms700.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length1.062 INCHES NOMINAL IN
Impedance Rating in Ohms900.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Width0.938 INCHES NOMINAL IN
Primary to Secondary Turn Ratio1 TO 1 SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Terminal Type and Quantity5 TAB, SOLDER LUG
Transformer FunctionINPUT
Winding Operating Current11.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Mounting Facility Quantity2 SINGLE GROUP
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Winding Operating Current14.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 4
5140-00-498-8772PD5140-00-498-8772 INTERCHANGEABLE
Tool Box,portable
General Services Administration Federal Supply Service
5445-01-010-6076SC-D-27405 INTERCHANGEABLE
Chest Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2920-01-123-3231DH-367 INTERCHANGEABLE
Cap,ignition Distribution
Ford Motor Craft
6625-01-596-3258198-1452 INTERCHANGEABLE
Test Set,electronic Systems
Avionics Specialties, Inc.
Cross-Reference Index
Part NumberManufacturer
W-11224 Unisys Corp Systems Development (USA)
1981452 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
435861-001 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1007006 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
956-0529-400 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
CH-77 Ferranti Electric Inc (USA)
Related Parts
5140-00-498-8772INTERCHANGEABLE
TOOL BOX,PORTABLE
PD5140-00-498-8772
5445-01-010-6076INTERCHANGEABLE
CHEST ASSEMBLY
SC-D-27405
2920-01-123-3231INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
DH-367
6625-01-596-3258INTERCHANGEABLE
TEST SET,ELECTRONIC SYSTEMS
198-1452

Frequently Asked Questions

What is NSN 5950-00-681-2266?

NSN 5950-00-681-2266 is a Transformer,audio Frequency, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-681-2266?

NSN 5950-00-681-2266 has 6 cross-referenced part numbers: W-11224 (Unisys Corp Systems Development), 1981452 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 435861-001 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1007006 (Lockheed Martin Corporation Div Rms - Mitchel Field), 956-0529-400 (L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division) and 1 more.

What NSN replaces 5950-00-681-2266?

There are 4 known substitutes for 5950-00-681-2266: 5140-00-498-8772, 5445-01-010-6076, 2920-01-123-3231 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1981452?

Key specifications for 1981452: Distance Between Mounting Facility Centers: 0.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Body Height: 0.688 INCHES NOMINAL IN; Impedance Rating in Ohms: 700.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Body Length: 1.062 INCHES NOMINAL IN. 19 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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