The Transistor, cataloged under National Stock Number 5961-00-324-2986, 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 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5961-00-324-2986 |
| Primary Part Number | 35821B |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Keysight Technologies Inc |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 27.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 20.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 1.5 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Maximum Operating Temp Per Measurement Point | 175.0 CELSIUS JUNCTION DEGC |
| Overall Diameter | 0.205 INCHES NOMINAL IN |
| Mounting Method | PRESS FIT |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 35.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Material | CERAMIC ENCLOSURE |
| Terminal Type and Quantity | 4 RIBBON |
| Power Rating Per Characteristic | 700.0 MILLIWATTS MAXIMUM TOTAL POWER 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 |
|---|---|
| 35821B PRIMARY | Keysight Technologies Inc (USA) |
| Reference | Meaning |
|---|---|
| 35821B | 5/9 Secondary reference Hewlett-Packard Company Dba HP |
| 35821B | 3/9 Design control — primary reference Keysight Technologies, Inc. |
| 129106-1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 35821BH15 | C/1 Advisory reference — outside the item-of-supply concept Hewlett-Packard Company Dba HP |
| 231254-001 | 5/2 Secondary reference U.S. Government activity |
NSN 5961-00-324-2986 is a Transistor, manufactured by Keysight Technologies Inc, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-00-324-2986 has 1 manufacturer part number on file: 35821B (Keysight Technologies Inc).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-305-4744. Verify interchangeability with system specifications before substitution.
Key specifications for 35821B: Voltage Rating in Volts Per Characteristic: 27.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 20.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 1.5 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 175.0 CELSIUS JUNCTION DEGC; Overall Diameter: 0.205 INCHES NOMINAL IN; Mounting Method: PRESS FIT. 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.