The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-556-1186, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 — Coils and Transformers (FSG 59) |
| Manufacturers | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (CAGE 55974); Magnetika Inc (CAGE 15634) |
| Parameter | Value |
|---|---|
| NSN | 5950-00-556-1186 |
| Primary Part Number | Q71782-2 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div |
| Status | ACTIVE |
| Transformer Function | LINE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 2.625 INCHES NOMINAL IN |
| Body Height | 3.250 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 15.0 DECIBELS SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 4000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 50.0 NOMINAL AND 125.0 MINIMUM AND 150.0 MAXIMUM AND 200.0 MINIMUM AND 250.0 MAXIMUM AND 333.0 NOMINAL AND 500.0 MINIMUM AND 600.0 MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Body Length | 3.125 INCHES NOMINAL IN |
| Winding Operating Current | 1.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 15.0 HERTZ MINIMUM AND 30.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.938 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Primary to Secondary Turn Ratio | 2.72 TO 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 8 TAB, 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 |
|---|---|
| Q71782-2 PRIMARY | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| LS150 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| Q71782-2 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| LS150 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-00-556-1186 is a Transformer,audio Frequency, manufactured by Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-556-1186 has 2 manufacturer part numbers on file: Q71782-2 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div), LS150 (Magnetika Inc).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-655-6708. Verify interchangeability with system specifications before substitution.
Key specifications for Q71782-2: Transformer Function: LINE; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP 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.