The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-100-5493, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-100-5493 |
| Primary Part Number | 25558 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Torotel, Inc. Div Torotel Products, Inc. |
| Status | ACTIVE |
| Inclosure Type | HERMETICALLY SEALED |
| Mounting Method | PLUG-IN SINGLE GROUP |
| Maximum Transformer Power Rating | 3.7 MILLIWATTS SINGLE COMPONENT |
| Winding Function and Quantity | 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 150.0 MINIMUM AND 600.0 MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO TERMINAL SINGLE COMPONENT |
| Maximum Operating Temp | 110.0 CELSIUS DEGC |
| Winding Operating Current | 3.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT ALL PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 200.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 7 PIN |
| 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 |
|---|---|
| 25558 PRIMARY | Torotel, Inc. Div Torotel Products, Inc. (USA) |
| WE-2925 PRIMARY | Magnetika Inc (USA) |
| 865305-0001 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| WE-2925 | 5/9 Secondary reference Wems Electronics Transformer Group |
| 865305-0001 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
NSN 5950-01-100-5493 is a Transformer,audio Frequency, manufactured by Torotel, Inc. Div Torotel Products, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-100-5493 has 3 manufacturer part numbers on file: 25558 (Torotel, Inc. Div Torotel Products, Inc.), WE-2925 (Magnetika Inc), 865305-0001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-539-4579. Verify interchangeability with system specifications before substitution.
Key specifications for 25558: Overall Height: 0.540 INCHES NOMINAL IN; Inclosure Type: HERMETICALLY SEALED; Mounting Method: PLUG-IN SINGLE GROUP; Maximum Transformer Power Rating: 3.7 MILLIWATTS SINGLE COMPONENT. 11 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.