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| Part Number | BU508AF | BU508AW | BU508AFI | BU508A |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | Motorola |
| Product Status | Active | Active | Obsolete | Obsolete |
| Transistor Type | NPN | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 8 A | 8 A | 8 A | 8 A |
| Voltage - Collector Emitter Breakdown (Max) | 700 V | 700 V | 700 V | 700 V |
| Vce Saturation (Max) @ Ib, Ic | 1V @ 1.6A, 4.5A | 1V @ 1.6A, 4.5A | 1V @ 2A, 4.5A | 1V @ 2A, 4.5A |
| Current - Collector Cutoff (Max) | 200µA | 200µA | 1mA | 1mA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 10 @ 100mA, 5V | 10 @ 100mA, 5V | - | - |
| Power - Max | 50 W | 125 W | 50 W | 125 W |
| Frequency - Transition | - | - | 7MHz | 7MHz |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-3P-3 Full Pack | TO-247-3 | ISOWATT-218-3 | TO-247-3 |
| Supplier Device Package | TO-3PF | TO-247-3 | ISOWATT-218FX | TO-247-3 |
