The Transformer,radio Frequency, cataloged under National Stock Number 5950-00-199-3733, 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 Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-199-3733 |
| Primary Part Number | 51C709-0 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Inclosure Type | OPEN |
| Overall Diameter | 5.188 INCHES NOMINAL IN |
| Turn Quantity | 4-1/2 SINGLE COMPONENT SINGLE PRIMARY |
| Mounting Method | TERMINAL SINGLE GROUP |
| Winding Conductor Size | 0.05707 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE PRIMARY IN |
| Winding Conductor Size | 0.05707 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN |
| Coil Form Type | SOLID SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Body Length | 5.500 INCHES NOMINAL IN |
| Rating Method | WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 5.7 MEGAHERTZ MINIMUM AND 8.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 5 BANANA PLUG |
| 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 |
|---|---|
| 51C709-0 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| A7923 | Autodyne Manufacturing Co Inc (USA) |
| 51C709-0 | Smart Machines, Inc. Dba Barker and Williamson (USA) |
| Reference | Meaning |
|---|---|
| 51C709-0 | 5/9 Secondary reference Barker & Williamson |
| 51C709-0 | 5/9 Secondary reference Viking Technologies, Ltd. |
| SCD23925GP4 | 5/2 Secondary reference U.S. Government activity |
| C390C | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-199-3733 is a Transformer,radio Frequency, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-199-3733 has 3 manufacturer part numbers on file: 51C709-0 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), A7923 (Autodyne Manufacturing Co Inc), 51C709-0 (Smart Machines, Inc. Dba Barker and Williamson).
2 possible matches (shared part number, not a government interchangeability claim): 2520-00-422-7391, 3040-01-428-4329. Verify interchangeability with system specifications before substitution.
Key specifications for 51C709-0: Inclosure Type: OPEN; Overall Diameter: 5.188 INCHES NOMINAL IN; Turn Quantity: 4-1/2 SINGLE COMPONENT SINGLE PRIMARY; Mounting Method: TERMINAL 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.