The Transistor, cataloged under National Stock Number 5961-01-349-3246, 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 Keysight Technologies Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5961-01-349-3246 |
| Primary Part Number | 1855-0849 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 28.0 MINIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE |
| Mounting Facility Quantity | 2 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-3 |
| Mounting Method | UNTHREADED HOLE(S) |
| Semiconductor Material | SILICON |
| Internal Configuration | FIELD EFFECT |
| Features Provided | HERMETICALLY SEALED CASE |
| Terminal Type and Quantity | 2 PIN AND 1 CASE |
| Power Rating Per Characteristic | 178.0 WATTS MAXIMUM TOTAL DEVICE DISSIPATION |
| 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 |
|---|---|
| 1855-0849 PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 1855-0473 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 1855-0473 | 5/9 Secondary reference Freescale Semiconductor, Inc. |
| 1855-0849 | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 94-0116 | 5/9 Secondary reference International Rectifier Corporation |
| 1855-0849 | 3/9 Design control — primary reference Keysight Technologies, Inc. |
NSN 5961-01-349-3246 is a Transistor, manufactured by Keysight Technologies Inc, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-349-3246 has 1 manufacturer part number on file: 1855-0849 (Keysight Technologies Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-543-2456, 3590-01-621-1394. Verify interchangeability with system specifications before substitution.
Key specifications for 1855-0849: Overall Height: 0.450 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 28.0 MINIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE; Mounting Facility Quantity: 2; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-3. 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.