The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-201-5581, 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 Support Services Corp. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-201-5581 |
| Primary Part Number | 581R981H02 |
| Item Name | Transformer,radio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Body Width | 5.250 INCHES NOMINAL IN |
| Body Height | 0.280 INCHES NOMINAL IN |
| Maximum Operating Temp | 105.0 CELSIUS DEGC |
| Body Length | 5.250 INCHES NOMINAL IN |
| Terminal Type and Quantity | 5 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 |
|---|---|
| 19302 | Vanguard Electronics, Llc (USA) |
| 581R981H02 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 581R981H02 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5950-01-201-5581 is a Transformer,radio Frequency, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-201-5581 has 2 manufacturer part numbers on file: 19302 (Vanguard Electronics, Llc), 581R981H02 (Northrop Grumman Support Services Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-330-8660, 3465-01-365-8884. Verify interchangeability with system specifications before substitution.
Key specifications for 581R981H02: Inclosure Type: FULLY INCLOSED; Body Width: 5.250 INCHES NOMINAL IN; Body Height: 0.280 INCHES NOMINAL IN; Maximum Operating Temp: 105.0 CELSIUS DEGC. 6 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.