The Transformer,power, cataloged under National Stock Number 5950-00-740-0790, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Freed Transformer Co. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-740-0790 |
| Primary Part Number | 39139 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Freed Transformer Co |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED WITH OIL |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 1.280 INCHES MAXIMUM IN |
| Body Height | 1.125 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT |
| Nominal Thread Size | 0.112 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 1.280 INCHES MAXIMUM IN |
| Winding Operating Current | 108.0 MILLIAMPERES AC MINIMUM AND 112.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Winding Operating Current | 3.5 MILLIAMPERES AC MINIMUM AND 3.7 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Current | 885.0 MILLIAMPERES AC MINIMUM AND 915.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 5.0 KILOHERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 24.00 DC VOLTS MINIMUM AND 30.00 DC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 4.45 AC VOLTS MINIMUM AND 4.74 AC VOLTS MAXIMUM SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 8.48 AC VOLTS MINIMUM AND 12.02 AC VOLTS MAXIMUM SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 87.31 AC VOLTS MINIMUM AND 96.51 AC VOLTS MAXIMUM SINGLE COMPONENT FIRST SECONDARY |
| Terminal Type and Quantity | 12 WIRE HOOK |
| 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 |
|---|---|
| 39139 | Freed Transformer Co (USA) |
| C9788 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| 39137 | Freed Transformer Co (USA) |
| SM-C-500369 | Raytheon Company (USA) |
| PEI 3450 | Precision Electronics, Inc (USA) |
| 30-11389 | Magnetic Components Inc (USA) |
| 666092-783 | Stromberg-Carlson Corp a Plessey Telecommunications Co (USA) |
| CC1692-00 | Conolog Corporation Dba Iniven (USA) |
| 666092-783 | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
| Reference | Meaning |
|---|---|
| RX-9724 | 5/2 Secondary reference U.S. Government activity |
| CC1692 | 5/9 Secondary reference Conolog Corporation Dba Iniven |
| SM-C-500369 | 5/9 Secondary reference Ptc Transformers |
| W5593 | 5/9 Secondary reference Cen Electronics a Div of Chloride Power Electronics Inc |
| SM-C-500369 | 3/2 Design control — primary reference U.S. Government activity |
| 398360 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-740-0790 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-740-0790 has 9 manufacturer part numbers on file: 39139 (Freed Transformer Co), C9788 (Electronic Transformer Corp Div Electronic Transformer Corporation), 39137 (Freed Transformer Co), SM-C-500369 (Raytheon Company), PEI 3450 (Precision Electronics, Inc) and 4 more.
6 possible matches (shared part number, not a government interchangeability claim): 4520-01-256-0158, 4520-01-257-4890, 2930-01-391-0875. Verify interchangeability with system specifications before substitution.
Key specifications for 39139: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED WITH OIL; Center to Center Distance Between Mounting Facilities Parallel to Length: 0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 23 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.