The Transformer,power, cataloged under National Stock Number 5950-01-123-2074, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Robert M. Hadley Company, Inc.. Government technical data includes 15 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-123-2074 |
| Primary Part Number | 18538 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Robert M. Hadley Company, Inc. |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 0.880 INCHES MAXIMUM IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | TERMINAL SINGLE GROUP |
| Winding Function and Quantity | 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 0.540 INCHES MAXIMUM IN |
| Winding Operating Current | 0.2 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 0.1 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 20.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Winding Operating Voltage | 12.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Voltage | 16.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 24.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Terminal Type and Quantity | 9 PIN |
| 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 |
|---|---|
| 18538 | Robert M. Hadley Company, Inc. (USA) |
| WE-3228 | Wems Inc Div Wems Electronics (USA) |
| WE-3228 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| WE-3228 | 5/9 Secondary reference Wems Electronics Transformer Group |
| 310-18022-01 | 5/9 Secondary reference U.S. Government activity |
| 861916 | 5/2 Secondary reference U.S. Government activity |
| 984881-1B | 3/2 Design control — primary reference U.S. Government activity |
NSN 5950-01-123-2074 is a Transformer,power, manufactured by Robert M. Hadley Company, Inc., classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-123-2074 has 3 manufacturer part numbers on file: 18538 (Robert M. Hadley Company, Inc.), WE-3228 (Wems Inc Div Wems Electronics), WE-3228 (Magnetika Inc).
5 possible matches (shared part number, not a government interchangeability claim): 2995-01-166-1136, 5975-01-285-0284, 5905-01-396-7577. Verify interchangeability with system specifications before substitution.
Key specifications for 18538: Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 0.880 INCHES MAXIMUM IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; 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.