The Transistor, cataloged under National Stock Number 5961-01-666-4451, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5961-01-666-4451 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| IRFBF20S | 3/2 Design control — primary reference U.S. Government activity |
NSN 5961-01-666-4451 is a Transistor, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5961-01-688-1932. Verify interchangeability with system specifications before substitution.
Key specifications for 5961-01-666-4451: Special Features: MOSFET, NCH, D 2PAK; Part Name Assigned by Controlling Agency: TRANSISTOR; End Item Identification: ADVANCED DATA TRANSFER UNIT/D6591000000. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.