The Transistor, cataloged under National Stock Number 5961-01-239-4505, 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 Semiconductor Technology, Inc. Dba Semiconductor Technology Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5961-01-239-4505 |
| Primary Part Number | ST-4474 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Semiconductor Technology, Inc. Dba Semiconductor Technology Inc |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 450.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 400.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 9.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN |
| Maximum Operating Temp Per Measurement Point | 150.0 CELSIUS JUNCTION DEGC |
| Mounting Facility Quantity | 2 |
| Joint Electronic Device Engineering Council/jedec/case Outline Designation | TO-3 |
| Mounting Method | UNTHREADED HOLE(S) |
| Transfer Ratio | 9.0 MINIMUM STATIC FORWARD CURRENT TRANSFER RATIO, COMMON-EMITTER |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Features Provided | HERMETICALLY SEALED CASE |
| Current Rating Per Characteristic | 30.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 6.00 AMPERES MAXIMUM BASE CURRENT, DC |
| Terminal Type and Quantity | 2 PIN AND 1 CASE |
| Power Rating Per Characteristic | 175.0 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 |
|---|---|
| ST-4474 | Semiconductor Technology, Inc. Dba Semiconductor Technology Inc (USA) |
| Reference | Meaning |
|---|---|
| FBN-L245 | 3/9 Design control — primary reference U.S. Government activity |
| BUS23B | 5/9 Secondary reference Philips Circuit Assemblies |
| BUS23B | 5/9 Secondary reference Philips Semiconductors Inc |
NSN 5961-01-239-4505 is a Transistor, manufactured by Semiconductor Technology, Inc. Dba Semiconductor Technology Inc, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-239-4505 has 1 manufacturer part number on file: ST-4474 (Semiconductor Technology, Inc. Dba Semiconductor Technology Inc).
Key specifications for ST-4474: Overall Height: 0.386 INCHES MAXIMUM IN; Voltage Rating in Volts Per Characteristic: 450.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC WITH SPECIFIED CIRCUIT BETWEEN BASE AND EMITTER AND 400.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 9.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN; Maximum Operating Temp Per Measurement Point: 150.0 CELSIUS JUNCTION DEGC; Mounting Facility Quantity: 2. 12 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.