The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-189-3742, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-189-3742 |
| Primary Part Number | 645995REV0 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 2.750 INCHES NOMINAL IN |
| Body Height | 3.750 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 10.0 WATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 500.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Impedance Rating in Ohms | 43.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Impedance Rating in Ohms | 4300.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Body Length | 2.750 INCHES NOMINAL IN |
| Winding Operating Current | 100.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Primary to Secondary Turn Ratio | 1 TO 3 TO 10 SINGLE COMPONENT |
| Terminal Type and Quantity | 9 STANDOFF, 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 |
|---|---|
| 645995REV0 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 33630 | 5/9 Secondary reference Edo |
| ASP368ALTA | 5/9 Secondary reference Edo |
NSN 5950-00-189-3742 is a Transformer,audio Frequency, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-189-3742 has 1 manufacturer part number on file: 645995REV0 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
4 possible matches (shared part number, not a government interchangeability claim): 4920-00-240-0085, 6695-01-218-3678, 2910-01-377-4160. Verify interchangeability with system specifications before substitution.
Key specifications for 645995REV0: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP. 17 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.