The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-683-7431, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Bogen Communications Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-683-7431 |
| Primary Part Number | T155 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Bogen Communications Inc |
| Status | ACTIVE |
| Transformer Function | INPUT |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 1.375 INCHES NOMINAL IN |
| Mounting Method | PLUG-IN SINGLE GROUP |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 50000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Impedance Rating in Ohms | 200.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Body Length | 1.750 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 40.0 HERTZ MINIMUM AND 15.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Primary to Secondary Turn Ratio | 1 TO 1.8 SINGLE COMPONENT |
| Terminal Type and Quantity | 6 PIN |
| 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 |
|---|---|
| T155 PRIMARY | Bogen Communications Inc (USA) |
| Reference | Meaning |
|---|---|
| 25A211 | 5/9 Secondary reference U.S. Government activity |
| 25A211 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-683-7431 is a Transformer,audio Frequency, manufactured by Bogen Communications Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-683-7431 has 1 manufacturer part number on file: T155 (Bogen Communications Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5999-01-049-3557, 5930-01-593-5288. Verify interchangeability with system specifications before substitution.
Key specifications for T155: Transformer Function: INPUT; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 1.375 INCHES NOMINAL IN; Mounting Method: PLUG-IN SINGLE GROUP. 13 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.