The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-129-4570, 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 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5950-01-129-4570 |
| Primary Part Number | D0-T277 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Magnetika Inc |
| Status | ACTIVE |
| Inclosure Type | HERMETICALLY SEALED |
| Precious Material | GOLD |
| Body Outside Diameter | 0.350 INCHES NOMINAL IN |
| Mounting Method | TERMINAL SINGLE GROUP |
| Maximum Transformer Power Rating | 1.0 MILLIWATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 500.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Impedance Rating in Ohms | 10000.0 MINIMUM AND 12000.0 MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 0.562 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Precious Material and Location | TERMINALS GOLD |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 7 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 |
|---|---|
| D0-T277 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| D0-T277 | 5/9 Secondary reference U.S. Government activity |
| 59157 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5950-01-129-4570 is a Transformer,audio Frequency, manufactured by Magnetika Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-129-4570 has 1 manufacturer part number on file: D0-T277 (Magnetika Inc).
Key specifications for D0-T277: Inclosure Type: HERMETICALLY SEALED; Precious Material: GOLD; Body Outside Diameter: 0.350 INCHES NOMINAL IN; Mounting Method: TERMINAL SINGLE GROUP. 15 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.