PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20A22Transformer,audio Frequency

Thordarson Inc · NSN 5950-00-899-3628 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-899-3628 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-899-3628. Primary manufacturer part number: 20A22.
Features
  • Transformer,audio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Frequency Rating: 20.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Maximum Transformer Power Rating: 300.0 MILLIWATTS SINGLE COMPONENT
  • Body Length: 3.250 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 7000.0 MINIMUM AND 15000.0 MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Body Width: 1.750 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 63000.0 MINIMUM AND 135000.0 MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-899-3628, 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 Thordarson Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-899-3628
Primary Part Number20A22
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerThordarson Inc
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Frequency Rating20.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Maximum Transformer Power Rating300.0 MILLIWATTS SINGLE COMPONENT
Body Length3.250 INCHES NOMINAL IN
Impedance Rating in Ohms7000.0 MINIMUM AND 15000.0 MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Body Width1.750 INCHES NOMINAL IN
Impedance Rating in Ohms63000.0 MINIMUM AND 135000.0 MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Primary to Secondary Turn Ratio1 TO 3 SINGLE COMPONENT
Winding Operating Current10.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Terminal Type and Quantity5 WIRE LEAD
Mounting Facility Quantity2 SINGLE GROUP
Body Height2.000 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Transformer FunctionINTERSTAGE
Cubic Measure11.3 CUBIC INCHES
Distance Between Mounting Facility Centers2.182 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3455-00-222-4063 INTERCHANGEABLE
File,rotary
5999-00-257-5748972739 INTERCHANGEABLE
Contact,electrical
Westinghouse Electric Corp
2090-01-285-1815804-5959312,DET20A,TYXIV,ST3 INTERCHANGEABLE
Head-Foot Board,cpo
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
A73C Emerson Electric Co White-Rodgers Div (USA)
20A22 PRIMARY Thordarson Inc (USA)
Related Parts
3455-00-222-4063INTERCHANGEABLE
FILE,ROTARY
5999-00-257-5748INTERCHANGEABLE
CONTACT,ELECTRICAL
972739
2090-01-285-1815INTERCHANGEABLE
HEAD-FOOT BOARD,CPO
804-5959312,DET20A,TYXIV,ST3

Frequently Asked Questions

What is NSN 5950-00-899-3628?

NSN 5950-00-899-3628 is a Transformer,audio Frequency, manufactured by Thordarson Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-899-3628?

NSN 5950-00-899-3628 has 2 cross-referenced part numbers: A73C (Emerson Electric Co White-Rodgers Div), 20A22 (Thordarson Inc).

What NSN replaces 5950-00-899-3628?

There are 3 known substitutes for 5950-00-899-3628: 3455-00-222-4063, 5999-00-257-5748, 2090-01-285-1815. Verify interchangeability with system specifications before substitution.

What are the specifications of 20A22?

Key specifications for 20A22: Reliability Indicator: NOT ESTABLISHED; Frequency Rating: 20.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Maximum Transformer Power Rating: 300.0 MILLIWATTS SINGLE COMPONENT; Body Length: 3.250 INCHES NOMINAL IN. 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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