The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-028-3228, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-028-3228 |
| Primary Part Number | 148031-1 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.930 INCHES MINIMUM AND 3.950 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 3.380 INCHES MINIMUM AND 3.500 INCHES MAXIMUM IN |
| Body Height | 5.260 INCHES MINIMUM AND 5.380 INCHES MAXIMUM IN |
| Mounting Hole Diameter | 0.280 INCHES MINIMUM AND 0.286 INCHES MAXIMUM SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Body Length | 4.380 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN |
| Winding Operating Current | 250.0 MILLIAMPERES AC MINIMUM AND 500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 1.0 KILOHERTZ MINIMUM AND 40.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.930 INCHES MINIMUM AND 2.950 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Primary to Secondary Turn Ratio | 10 TO 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 4 THREADED STUD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 148031-1 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| PEI 8781 | Precision Electronics, Inc (USA) |
| GF-122-C | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 148031-1 | 5/9 Secondary reference U.S. Government activity |
| CC838 | 5/9 Secondary reference Sora Power Inc. Dba Sora Power Inc |
| GF-122-C | 5/9 Secondary reference U.S. Government activity |
NSN 5950-01-028-3228 is a Transformer,audio Frequency, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-028-3228 has 3 manufacturer part numbers on file: 148031-1 (L3harris Technologies, Inc Div Space & Airborne Systems), PEI 8781 (Precision Electronics, Inc), GF-122-C (Espey Mfg and Electronics Corp).
Key specifications for 148031-1: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 3.930 INCHES MINIMUM AND 3.950 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP. 16 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.
NSN 5950-01-028-3228 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.