The Transistor, cataloged under National Stock Number 5961-01-122-6509, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5961-01-122-6509 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Status | ACTIVE |
| Overall Diameter | 0.220 INCHES NOMINAL IN |
| Terminal Length | 0.512 INCHES NOMINAL IN |
| Mounting Method | TERMINAL |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| 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 |
|---|---|
| 28452-777K | 5/9 Secondary reference Marconi Electronics Inc Marconi Instruments Div |
| 28452-777K | 3/9 Design control — primary reference Viavi Solutionsllc |
| BC109 | C/1 Advisory reference — outside the item-of-supply concept Vishay |
NSN 5961-01-122-6509 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): 5961-01-132-9134. Verify interchangeability with system specifications before substitution.
Key specifications for 5961-01-122-6509: Overall Diameter: 0.220 INCHES NOMINAL IN; Terminal Length: 0.512 INCHES NOMINAL IN; Mounting Method: TERMINAL; Overall Length: 0.200 INCHES NOMINAL IN. 4 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.