The Transistor, cataloged under National Stock Number 5961-01-228-4871, 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 Solitron Devices, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-228-4871 |
| Primary Part Number | SDT4921 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Solitron Devices, Inc. |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 225.0 NOMINAL COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 200.0 NOMINAL COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 8.0 NOMINAL EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-5 |
| Overall Diameter | 0.352 INCHES NOMINAL IN |
| Terminal Length | 1.501 INCHES NOMINAL IN |
| Mounting Method | TERMINAL |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SDT4921 PRIMARY | Solitron Devices, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 44542 99601 | 5/9 Secondary reference Thales Deutschland Gmbh Div Customer Services |
| 44542 9901 | 5/9 Secondary reference Thales Deutschland Gmbh Div Customer Services |
| 44542-99601 | 5/9 Secondary reference Thales Deutschland Gmbh Div Customer Services |
NSN 5961-01-228-4871 is a Transistor, manufactured by Solitron Devices, Inc., classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-228-4871 has 1 manufacturer part number on file: SDT4921 (Solitron Devices, Inc.).
Key specifications for SDT4921: Voltage Rating in Volts Per Characteristic: 225.0 NOMINAL COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 200.0 NOMINAL COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 8.0 NOMINAL EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Joint Electronic Device Engineering Council/jedec/case Outline Designation: TO-5; Overall Diameter: 0.352 INCHES NOMINAL IN; Terminal Length: 1.501 INCHES NOMINAL IN. 8 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.
NSN 5961-01-228-4871 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.