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| Part Number | BUL128 | BUL138 | BULK128 |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Active | Obsolete |
| Transistor Type | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 4 A | 5 A | 4 A |
| Voltage - Collector Emitter Breakdown (Max) | 400 V | 400 V | 400 V |
| Vce Saturation (Max) @ Ib, Ic | 500mV @ 1A, 4A | 700mV @ 1A, 5A | 500mV @ 1A, 4A |
| Current - Collector Cutoff (Max) | 100µA | 250µA | 250µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 14 @ 2A, 5V | 8 @ 2A, 5V | 14 @ 2A, 5V |
| Power - Max | 70 W | 80 W | 55 W |
| Frequency - Transition | - | - | - |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 | SOT-82 |
| Supplier Device Package | TO-220 | TO-220 | SOT-82-3 |
