The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-116-3674, 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 22 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5950-01-116-3674 |
| Primary Part Number | 278-0505-020 |
| 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 |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Precious Material | SILVER |
| Turn Quantity | 1 SINGLE COMPONENT SINGLE SECONDARY |
| Turn Quantity | 2 SINGLE COMPONENT SINGLE PRIMARY |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 0.187 INCHES NOMINAL IN |
| Body Height | 0.765 INCHES NOMINAL IN |
| Winding Conductor Size | 0.02535 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Conductor Size | 0.02535 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Mounting Hole Diameter | 0.187 INCHES NOMINAL SINGLE GROUP IN |
| Coil Form Type | SOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 0.390 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Maximum Operating Temp | 125.0 CELSIUS DEGC |
| Body Length | 0.500 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Precious Material and Location | TERMINAL SURFACES SILVER |
| Terminal Type and Quantity | 5 WIRE LEAD |
| Special Handling Feature | PILFERABLE |
| 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 |
|---|---|
| 278-0505-020 | Rockwell Collins Inc Div Collins Aerospace - Mission Systems (USA) |
| 278-0505-020 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 278-0505-020 | National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc. (USA) |
| 278-0505-020 | Prem Magnetics Inc (USA) |
| Reference | Meaning |
|---|---|
| 278-0505-020 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-116-3674 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 5950-01-116-3674 has 4 manufacturer part numbers on file: 278-0505-020 (Rockwell Collins Inc Div Collins Aerospace - Mission Systems), 278-0505-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 278-0505-020 (National Magnetics Group, Inc. Dba Ceramic Magnetics Div Ceramic Magnetics, Inc.), 278-0505-020 (Prem Magnetics Inc).
Key specifications for 278-0505-020: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Precious Material: SILVER; Turn Quantity: 1 SINGLE COMPONENT SINGLE SECONDARY. 22 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.