The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-657-2222, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-657-2222 |
| Primary Part Number | 1850810REVAPCALL |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | OPEN |
| Mounting Method | FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP |
| Body Width | 0.812 INCHES NOMINAL IN |
| Body Height | 0.844 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 22.0 DECIBELS SINGLE COMPONENT |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL SINGLE GROUP IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 25000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Impedance Rating in Ohms | 1200.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Distance Between Mounting Facility Centers | 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Body Length | 1.046 INCHES NOMINAL IN |
| Winding Operating Current | 3.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 200.0 HERTZ MINIMUM AND 15.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 5 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 |
| Part Number | Manufacturer |
|---|---|
| 1875671REVCPC67 | Northrop Grumman Systems Corporation (USA) |
| 1850810REVAPCALL PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 1875671REVCPC67 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 1850810 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 1850810REVAPCALL | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 1875845PC82 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 1850810 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| M3247 | 5/9 Secondary reference Microtran Co Inc |
| MT7FB | 5/9 Secondary reference Microtran Co Inc |
NSN 5950-00-657-2222 is a Transformer,audio Frequency, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-657-2222 has 7 manufacturer part numbers on file: 1875671REVCPC67 (Northrop Grumman Systems Corporation), 1850810REVAPCALL (Northrop Grumman Systems Corporation), 1875671REVCPC67 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1850810 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1850810REVAPCALL (Lockheed Martin Corporation Div Rms - Mitchel Field) and 2 more.
Key specifications for 1850810REVAPCALL: Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: OPEN; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP; Body Width: 0.812 INCHES NOMINAL IN. 16 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.