The Transformer,power, cataloged under National Stock Number 5950-00-231-3785, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Ems Development Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-231-3785 |
| Primary Part Number | PC109E0030-4 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Ems Development Corporation |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 2.500 INCHES NOMINAL IN |
| Body Height | 2.800 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.218 INCHES NOMINAL SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT |
| Body Length | 3.000 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 20.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Winding Operating Voltage | 440.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Operating Voltage | 20.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Winding Operating Voltage | 140.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Terminal Type and Quantity | 9 TAB, SOLDER LUG |
| 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 |
|---|---|
| PC109E0030-4 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| PC109E0030-4 | Standex Electronics, Inc. (USA) |
| PC109E0030-4 | Ae Westwood Ltd (GBR) |
| PC109E0030-4 PRIMARY | Ems Development Corporation (USA) |
| E21B | B G Laboratories Inc. (USA) |
| PC109E0030-4 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| PC109E0030-4 | 5/9 Secondary reference U.S. Government activity |
| PC109E0030-4 | 5/9 Secondary reference Ncr Corp Power Systems Div |
| PC109E0030-4 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 5950PL0992194 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| PC109E0030-4 | 5/9 Secondary reference B G Laboratories Inc. |
NSN 5950-00-231-3785 is a Transformer,power, manufactured by Ems Development Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-231-3785 has 6 manufacturer part numbers on file: PC109E0030-4 (Electronic Transformer Corp Div Electronic Transformer Corporation), PC109E0030-4 (Standex Electronics, Inc.), PC109E0030-4 (Ae Westwood Ltd), PC109E0030-4 (Ems Development Corporation), E21B (B G Laboratories Inc.) and 1 more.
Key specifications for PC109E0030-4: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 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.