The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-648-2539, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Magnetika Inc Div Magnetika/phillipsburg Location. Government technical data includes 18 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-648-2539 |
| Primary Part Number | S0-C-63221 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Magnetika Inc Div Magnetika/phillipsburg Location |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 0.906 INCHES NOMINAL IN |
| Body Height | 2.000 INCHES NOMINAL IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Impedance Rating in Ohms | 135.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Shielding Method | INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 1.375 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 12.0 KILOHERTZ MINIMUM AND 68.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Primary to Secondary Turn Ratio | 1 TO 2 SINGLE COMPONENT |
| Terminal Type and Quantity | 5 TAB, SOLDER LUG |
| 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 |
|---|---|
| 52535-4 | Magnetika Inc Div Magnetika/phillipsburg Location (USA) |
| 28812 | Freed Transformer Co (USA) |
| S0-C-63221 PRIMARY | Magnetika Inc Div Magnetika/phillipsburg Location (USA) |
| Reference | Meaning |
|---|---|
| GA51265 | 5/9 Secondary reference At and T Corp |
| SCC63221 | 5/2 Secondary reference U.S. Government activity |
| 52535-4 | 5/9 Secondary reference Opt Industries Inc Div of Electronika Inc |
| GA51265 | 5/9 Secondary reference American Telephone and Telegraph Co |
| S0C63221 | 3/2 Design control — primary reference U.S. Government activity |
| DMS 82014B | 5/9 Secondary reference Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| S0-C-63221 | 5/9 Secondary reference Opt Industries Inc Div of Electronika Inc |
NSN 5950-00-648-2539 is a Transformer,audio Frequency, manufactured by Magnetika Inc Div Magnetika/phillipsburg Location, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-648-2539 has 3 manufacturer part numbers on file: 52535-4 (Magnetika Inc Div Magnetika/phillipsburg Location), 28812 (Freed Transformer Co), S0-C-63221 (Magnetika Inc Div Magnetika/phillipsburg Location).
6 possible matches (shared part number, not a government interchangeability claim): 5950-00-665-1432, 5945-00-814-3829, 5945-00-915-5543. Verify interchangeability with system specifications before substitution.
Key specifications for S0-C-63221: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED; Mounting Method: THREADED STUD(S) SINGLE GROUP; Body Width: 0.906 INCHES NOMINAL IN. 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.