The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-505-5397, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-505-5397 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Overall Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Mounting Method | TERMINAL SINGLE GROUP |
| Body Height | 0.350 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY FIRST COMPONENT |
| Winding Function and Quantity | 1 SECONDARY SECOND COMPONENT |
| Winding Function and Quantity | 1 SECONDARY THIRD COMPONENT |
| Impedance Rating in Ohms | 150.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Features Provided | TINNED WIRE LEADS |
| Specification/standard Data | 81349-MIL-27/357B GOVERNMENT SPECIFICATION |
| Winding Operating Current | 11.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 75.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Test Data Document | 81349-MIL-PRF-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Primary to Secondary Turn Ratio | 1 TO 1 FIRST COMPONENT |
| Primary to Secondary Turn Ratio | 2 TO 1 SECOND COMPONENT |
| Terminal Type and Quantity | 7 WIRE LEAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-PRF-27/357 | 4/1 Identification reference U.S. Government activity |
| M27/357-016 | 2/2 Government specification standardization U.S. Government activity |
NSN 5950-01-505-5397 is a Transformer,audio Frequency, classified under FSC 5950, Coils and Transformers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-508-6681, 5950-01-508-6685. Verify interchangeability with system specifications before substitution.
Key specifications for 5950-01-505-5397: Inclosure Type: FULLY INCLOSED; Overall Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Mounting Method: TERMINAL SINGLE GROUP; Body Height: 0.350 INCHES MAXIMUM IN. 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.