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| Part Number | BU931 | BU931T | BU931P | BU941 |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Active | Active | Obsolete |
| Transistor Type | NPN - Darlington | NPN - Darlington | NPN - Darlington | NPN - Darlington |
| Current - Collector (Ic) (Max) | 15 A | 10 A | 15 A | 15 A |
| Voltage - Collector Emitter Breakdown (Max) | 400 V | 400 V | 400 V | 400 V |
| Vce Saturation (Max) @ Ib, Ic | 1.8V @ 250mA, 10A | 1.8V @ 250mA, 10A | 1.8V @ 250mA, 10A | 2V @ 300mA, 12A |
| Current - Collector Cutoff (Max) | 100µA | 100µA | 100µA | 100µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 300 @ 5A, 10V | 300 @ 5A, 10V | 300 @ 5A, 10V | 300 @ 5A, 10V |
| Power - Max | 175 W | 125 W | 135 W | 180 W |
| Frequency - Transition | - | - | - | - |
| Operating Temperature | 200°C (TJ) | 175°C (TJ) | 175°C (TJ) | 200°C (TJ) |
| Mounting Type | Chassis Mount | Through Hole | Through Hole | Chassis Mount |
| Package / Case | TO-204AA, TO-3 | TO-220-3 | TO-247-3 | TO-204AA, TO-3 |
| Supplier Device Package | TO-3 | TO-220 | TO-247-3 | TO-3 |
