The Transformer,power, cataloged under National Stock Number 5950-01-331-5921, 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 24 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5950-01-331-5921 |
| Primary Part Number | 672-0543-020 |
| Item Name | Transformer,power |
| 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 | 1 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Body Width | 2.000 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 5 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Features Provided | W/RECTIFIER |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 125.0 CELSIUS DEGC |
| Body Length | 2.000 INCHES MAXIMUM IN |
| Winding Operating Current | 2.0 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Current | 2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 1.5 AMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Current | 300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 51.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Winding Operating Voltage | 14.14 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY |
| Winding Operating Voltage | 28.28 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 36.76 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 75.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 8.48 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Terminal Type and Quantity | 19 PIN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| 672-0543-020 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
| 24-0870-02 | Hisonic, Llc (USA) |
| Reference | Meaning |
|---|---|
| CT6245 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-331-5921 is a Transformer,power, 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 5950-01-331-5921 has 2 manufacturer part numbers on file: 672-0543-020 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 24-0870-02 (Hisonic, Llc).
Key specifications for 672-0543-020: Overall Height: 0.750 INCHES MAXIMUM IN; Mounting Facility Quantity: 1 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 24 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.