The Transistor, cataloged under National Stock Number 5961-01-005-4598, 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 Vishay. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5961-01-005-4598 |
| Primary Part Number | BFY52 |
| Item Name | Transistor |
| FSC / FSG | 5961 / 59 — Semiconductor Devices and Associated Hardware |
| Manufacturer | Vishay |
| Status | ACTIVE |
| Voltage Rating in Volts Per Characteristic | 40.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 20.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN |
| Maximum Operating Temp Per Measurement Point | 200.0 CELSIUS JUNCTION DEGC |
| Overall Diameter | 0.370 INCHES MAXIMUM IN |
| Terminal Length | 1.500 INCHES MINIMUM IN |
| Mounting Method | TERMINAL |
| Internal Junction Configuration | NPN |
| Semiconductor Material | SILICON |
| Internal Configuration | JUNCTION CONTACT |
| Current Rating Per Characteristic | 1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC |
| Terminal Type and Quantity | 3 UNINSULATED WIRE LEAD |
| Terminal Circle Diameter | 0.200 INCHES NOMINAL IN |
| Electrode Internally-Electrically Connected to Case | COLLECTOR |
| Power Rating Per Characteristic | 5.0 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 |
|---|---|
| BFY52 | Vishay (GBR) |
| Reference | Meaning |
|---|---|
| BFY52 | 3/9 Design control — primary reference Amperex Electronic Corp |
NSN 5961-01-005-4598 is a Transistor, manufactured by Vishay, classified under FSC 5961, Semiconductor Devices and Associated Hardware. Status: active.
NSN 5961-01-005-4598 has 1 manufacturer part number on file: BFY52 (Vishay).
Key specifications for BFY52: Voltage Rating in Volts Per Characteristic: 40.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 20.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN; Maximum Operating Temp Per Measurement Point: 200.0 CELSIUS JUNCTION DEGC; Overall Diameter: 0.370 INCHES MAXIMUM IN; Terminal Length: 1.500 INCHES MINIMUM IN. 13 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.