The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-126-2903, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-126-2903 |
| Primary Part Number | 278-0439-050 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Turn Quantity | 6 SINGLE COMPONENT SINGLE PRIMARY |
| Mounting Method | TERMINAL SINGLE GROUP |
| Body Width | 0.295 INCHES NOMINAL IN |
| Body Height | 0.250 INCHES NOMINAL IN |
| Winding Conductor Size | 0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Conductor Size | 0.02010 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Maximum Operating Temp | 85.0 CELSIUS DEGC |
| Body Length | 0.525 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| 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 |
|---|---|
| 278-0439-050 | National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc. (USA) |
| 278-0439-050 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 278-0439-050 | Prem Magnetics Inc (USA) |
| Reference | Meaning |
|---|---|
| 278-0439-050 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-126-2903 is a Transformer,radio Frequency, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-126-2903 has 3 manufacturer part numbers on file: 278-0439-050 (National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc.), 278-0439-050 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 278-0439-050 (Prem Magnetics Inc).
Key specifications for 278-0439-050: Inclosure Type: FULLY INCLOSED; Turn Quantity: 6 SINGLE COMPONENT SINGLE PRIMARY; Mounting Method: TERMINAL SINGLE GROUP; Body Width: 0.295 INCHES NOMINAL IN. 13 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.