PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

638-036Transformer,audio Frequency

Johnson E F Co Comco/communications Co Div · NSN 5950-00-980-1950 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-980-1950 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-980-1950. Primary manufacturer part number: 638-036.
Features
  • Transformer,audio Frequency — FSC 5950
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL SINGLE GROUP IN
  • Terminal Type and Quantity: 4 WIRE LEAD
  • Body Height: 1.375 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 3.2 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Inclosure Type: OPEN
  • Primary to Secondary Turn Ratio: 1 TO 2-1/2 SINGLE COMPONENT
  • Impedance Rating in Ohms: 20.0 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 5950-00-980-1950, 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 Johnson E F Co Comco/communications Co Div. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-980-1950
Primary Part Number638-036
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerJohnson E F Co Comco/communications Co Div
StatusACTIVE
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Terminal Type and Quantity4 WIRE LEAD
Body Height1.375 INCHES NOMINAL IN
Impedance Rating in Ohms3.2 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeOPEN
Primary to Secondary Turn Ratio1 TO 2-1/2 SINGLE COMPONENT
Impedance Rating in Ohms20.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width1.188 INCHES NOMINAL IN
Transformer FunctionOUTPUT
Body Length2.406 INCHES NOMINAL IN
Winding Operating Current700.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity2 SINGLE GROUP
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Frequency Rating300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Maximum Transformer Power Rating2.5 WATTS SINGLE COMPONENT
Distance Between Mounting Facility Centers2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-143-758542620 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
Cross-Reference Index
Part NumberManufacturer
638-036 Johnson E F Co Comco/communications Co Div (USA)
Related Parts
3110-00-143-7585INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
42620

Frequently Asked Questions

What is NSN 5950-00-980-1950?

NSN 5950-00-980-1950 is a Transformer,audio Frequency, manufactured by Johnson E F Co Comco/communications Co Div, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-980-1950?

NSN 5950-00-980-1950 has 1 cross-referenced part number: 638-036 (Johnson E F Co Comco/communications Co Div).

What NSN replaces 5950-00-980-1950?

There is 1 known substitute for 5950-00-980-1950: 3110-00-143-7585. Verify interchangeability with system specifications before substitution.

What are the specifications of 638-036?

Key specifications for 638-036: Mounting Hole Diameter: 0.188 INCHES NOMINAL SINGLE GROUP IN; Terminal Type and Quantity: 4 WIRE LEAD; Body Height: 1.375 INCHES NOMINAL IN; Impedance Rating in Ohms: 3.2 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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