The Transistor, cataloged under National Stock Number 5961-01-155-9922, 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 Hensoldt Uk. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-155-9922 |
| Primary Part Number | 45-666-797 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Hensoldt Uk |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 40.0 MAXIMUM GATE TO SOURCE THRESHOLD VOLTAGE |
| Mounting Facility Quantity | 2 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-3 |
| Mounting Method | UNTHREADED HOLE(S) |
| Internal Junction Configuration | NPN |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 2.50 MICROAMPERES MAXIMUM DRAIN CURRENT |
| Terminal Type and Quantity | 2 UNINSULATED WIRE LEAD AND 1 CASE |
| Electrode Internally-Electrically Connected to Case | COLLECTOR |
| 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 |
|---|---|
| 45-666-797 | Hensoldt Uk (GBR) |
| Reference | Meaning |
|---|---|
| IRF140 | 5/2 Secondary reference U.S. Government activity |
| IRF140 | 5/9 Secondary reference Freescale Semiconductor, Inc. |
| IRF140 | 5/2 Secondary reference U.S. Government activity |
| 500107-01 | 3/9 Design control — primary reference C F Electronics Inc |
NSN 5961-01-155-9922 is a Transistor, manufactured by Hensoldt Uk, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-155-9922 has 1 manufacturer part number on file: 45-666-797 (Hensoldt Uk).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-329-0104. Verify interchangeability with system specifications before substitution.
Key specifications for 45-666-797: Overall Height: 0.450 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 40.0 MAXIMUM GATE TO SOURCE THRESHOLD VOLTAGE; Mounting Facility Quantity: 2; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-3. 11 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.