The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-061-8124, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Electronic Transformer Corp Div Electronic Transformer Corporation. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-061-8124 |
| Primary Part Number | 405601 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Electronic Transformer Corp Div Electronic Transformer Corporation |
| Status | ACTIVE |
| Transformer Function | LINE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 1.300 INCHES MAXIMUM IN |
| Body Height | 1.750 INCHES MAXIMUM IN |
| Maximum Transformer Power Rating | 25.0 MILLIWATTS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 15000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 1.300 INCHES MAXIMUM IN |
| Winding Operating Current | 8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Terminal Type and Quantity | 4 WIRE LEAD |
| 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 |
|---|---|
| 405601 | Electronic Transformer Corp Div Electronic Transformer Corporation (USA) |
| XT11705 | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA) |
| Reference | Meaning |
|---|---|
| 7196-3 | 5/9 Secondary reference U.S. Government activity |
| A102636 | 5/2 Secondary reference U.S. Government activity |
| SM-C-422654 | 5/9 Secondary reference Valcore Manufacturing Llc |
| XT11705 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| SMC422654 | 3/2 Design control — primary reference U.S. Government activity |
| SM-C-422654 | 5/9 Secondary reference Valcore Manufacturing Llc Dba Use CAGE Code 04ye2 for Cataloging |
NSN 5950-00-061-8124 is a Transformer,audio Frequency, manufactured by Electronic Transformer Corp Div Electronic Transformer Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-061-8124 has 2 manufacturer part numbers on file: 405601 (Electronic Transformer Corp Div Electronic Transformer Corporation), XT11705 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).
3 possible matches (shared part number, not a government interchangeability claim): 3120-00-901-2162, 5340-01-399-2807, 5970-01-488-1315. Verify interchangeability with system specifications before substitution.
Key specifications for 405601: Transformer Function: LINE; Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Mounting Method: THREADED STUD(S) SINGLE GROUP. 20 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.