The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-919-4486, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Torotel, Inc. Div Torotel Products, Inc.. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-919-4486 |
| Primary Part Number | 20546 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Torotel, Inc. Div Torotel Products, Inc. |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 0.969 INCHES MAXIMUM IN |
| Body Height | 1.500 INCHES MAXIMUM IN |
| Maximum Transformer Power Rating | 2.25 WATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 500.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 150.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Impedance Rating in Ohms | 300.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Nominal Thread Size | 0.086 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 1.156 INCHES MAXIMUM IN |
| Winding Operating Current | 200.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 6.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 56 SINGLE GROUP |
| Terminal Type and Quantity | 8 PIN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20546 | Torotel, Inc. Div Torotel Products, Inc. (USA) |
| 59T10A1012 | Omega Associates, Inc. Dba Omega Associates Inc (USA) |
| AT-2272 | Hytronics Corp. (USA) |
| 40872 | Freed Transformer Co (USA) |
| Reference | Meaning |
|---|---|
| BC3474 | 3/9 Design control — primary reference U.S. Government activity |
| 677-0274-010 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| BX-9253 | 5/2 Secondary reference U.S. Government activity |
| MP52329 | 5/9 Secondary reference Opt Industries Inc Div of Electronika Inc |
| 526-0094-010 | 5/2 Secondary reference U.S. Government activity |
| 677-0274-010 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-919-4486 is a Transformer,audio Frequency, manufactured by Torotel, Inc. Div Torotel Products, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-919-4486 has 4 manufacturer part numbers on file: 20546 (Torotel, Inc. Div Torotel Products, Inc.), 59T10A1012 (Omega Associates, Inc. Dba Omega Associates Inc), AT-2272 (Hytronics Corp.), 40872 (Freed Transformer Co).
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-218-0978, 3040-01-225-3962, 4920-01-227-3702. Verify interchangeability with system specifications before substitution.
Key specifications for 20546: Overall Height: 1.938 INCHES MAXIMUM IN; Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Mounting Method: THREADED HOLE(S) SINGLE GROUP. 19 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.