The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-270-9570, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-270-9570 |
| Primary Part Number | 278-0439-020 |
| 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 | OPEN |
| Turn Quantity | 2 SINGLE COMPONENT SINGLE SECONDARY |
| Turn Quantity | 1 SINGLE COMPONENT SECOND PRIMARY |
| Turn Quantity | 2 SINGLE COMPONENT FIRST PRIMARY |
| Mounting Method | TAB SINGLE GROUP |
| Body Width | 0.560 INCHES MAXIMUM IN |
| Body Height | 0.525 INCHES MAXIMUM IN |
| Winding Conductor Size | 0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Winding Conductor Size | 0.01594 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SECOND PRIMARY IN |
| Winding Conductor Size | 0.03196 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT FIRST PRIMARY IN |
| Coil Form Type | HOLLOW SINGLE COMPONENT |
| Winding Function and Quantity | 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Body Length | 0.866 INCHES MAXIMUM IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT ALL PRIMARY |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Mounting Tab Width | 0.040 INCHES NOMINAL IN |
| 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 |
|---|---|
| 278-0439-020 | Prem Magnetics Inc (USA) |
| 278-0439-020 | National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc. (USA) |
| 278-0439-020 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5950-01-270-9570 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 5950-01-270-9570 has 3 manufacturer part numbers on file: 278-0439-020 (Prem Magnetics Inc), 278-0439-020 (National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc.), 278-0439-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 278-0439-020: Inclosure Type: OPEN; Turn Quantity: 2 SINGLE COMPONENT SINGLE SECONDARY; Turn Quantity: 1 SINGLE COMPONENT SECOND PRIMARY; Turn Quantity: 2 SINGLE COMPONENT FIRST PRIMARY. 18 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.