The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-908-1487, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Magnetika Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-908-1487 |
| Primary Part Number | ER477 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Magnetika Inc |
| Status | ACTIVE |
| Inclosure Type | HERMETICALLY SEALED |
| Overall Diameter | 0.344 INCHES MAXIMUM IN |
| Maximum Transformer Power Rating | 100.0 MILLIWATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 10000.0 MINIMUM AND 12000.0 MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 500.0 MINIMUM AND 600.0 MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Body Length | 0.469 INCHES MAXIMUM IN |
| Winding Operating Current | 1.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 400.0 HERTZ NOMINAL SINGLE COMPONENT |
| Primary to Secondary Turn Ratio | 4.47 TO 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 5 WIRE LEAD |
| 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 |
|---|---|
| ER477 PRIMARY | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| ER477 | 5/9 Secondary reference U.S. Government activity |
| 903074 | 7/2 Vendor item drawing reference General Dynamics Land Systems - Canadacorporation Div General Dynamics Mission Systems |
NSN 5950-00-908-1487 is a Transformer,audio Frequency, manufactured by Magnetika Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-908-1487 has 1 manufacturer part number on file: ER477 (Magnetika Inc).
Key specifications for ER477: Inclosure Type: HERMETICALLY SEALED; Overall Diameter: 0.344 INCHES MAXIMUM IN; Maximum Transformer Power Rating: 100.0 MILLIWATTS SINGLE COMPONENT; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT. 12 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.