The Semiconductor Devices,unitized, cataloged under National Stock Number 5961-01-026-6601, is classified within Federal Supply Class 5961 (Semiconductor Devices and Associated Hardware) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Schweiz Ag Dba Siemens Switzerland Ltd.. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-026-6601 |
| Primary Part Number | V3326Z5566X1 |
| Item Name | Semiconductor Devices,unitized |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Siemens Schweiz Ag Dba Siemens Switzerland Ltd. |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 40.0 MAXIMUM DRAIN TO GATE VOLTAGE AND 40.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 40.0 MAXIMUM REVERSE GATE TO SOURCE VOLTAGE ALL TRANSISTOR |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-71 |
| Overall Diameter | 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Terminal Length | 0.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Semiconductor Material | SILICON ALL TRANSISTOR |
| Component Name and Quantity | 2 TRANSISTOR |
| Current Rating Per Characteristic | 50.00 MILLIAMPERES MAXIMUM FORWARD GATE CURRENT ALL TRANSISTOR |
| Terminal Type and Quantity | 6 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 |
| Part Number | Manufacturer |
|---|---|
| V3326Z5566X1 | Siemens Schweiz Ag Dba Siemens Switzerland Ltd. (CHE) |
| 2N5566 | Siliconix Incorporated Div Siliconix (USA) |
| Reference | Meaning |
|---|---|
| 2N5566 | 3/9 Design control — primary reference U.S. Government activity |
| RELEASE5901 | 5/9 Secondary reference U.S. Government activity |
NSN 5961-01-026-6601 is a Semiconductor Devices,unitized, manufactured by Siemens Schweiz Ag Dba Siemens Switzerland Ltd., classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-026-6601 has 2 manufacturer part numbers on file: V3326Z5566X1 (Siemens Schweiz Ag Dba Siemens Switzerland Ltd.), 2N5566 (Siliconix Incorporated Div Siliconix).
2 possible matches (shared part number, not a government interchangeability claim): 5961-01-044-4120, 5961-01-486-3566. Verify interchangeability with system specifications before substitution.
Key specifications for V3326Z5566X1: Voltage Rating in Volts Per Characteristic: 40.0 MAXIMUM DRAIN TO GATE VOLTAGE AND 40.0 MAXIMUM DRAIN TO SOURCE VOLTAGE AND 40.0 MAXIMUM REVERSE GATE TO SOURCE VOLTAGE ALL TRANSISTOR; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-71; Overall Diameter: 0.209 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Terminal Length: 0.500 INCHES MINIMUM IN. 9 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.