| Part Number | BU941 | BU931 |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | Transistors - Bipolar (BJT) - Single | Transistors - Bipolar (BJT) - Single |
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| Product Status | Obsolete | Obsolete |
| Transistor Type | NPN - Darlington | NPN - Darlington |
| Current - Collector (Ic) (Max) | 15 A | 15 A |
| Voltage - Collector Emitter Breakdown (Max) | 400 V | 400 V |
| Vce Saturation (Max) @ Ib, Ic | 2V @ 300mA, 12A | 1.8V @ 250mA, 10A |
| Current - Collector Cutoff (Max) | 100µA | 100µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 300 @ 5A, 10V | 300 @ 5A, 10V |
| Power - Max | 180 W | 175 W |
| Frequency - Transition | - | - |
| Operating Temperature | 200°C (TJ) | 200°C (TJ) |
| Mounting Type | Chassis Mount | Chassis Mount |
| Package / Case | TO-204AA, TO-3 | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 | TO-3 |