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| Part Number | BUT11A | BUT12A | BUT11 |
|---|---|---|---|
| Manufacturer | onsemi | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Active | Obsolete | Active |
| Transistor Type | NPN | NPN | NPN |
| Current - Collector (Ic) (Max) | 5 A | 8 A | 5 A |
| Voltage - Collector Emitter Breakdown (Max) | 450 V | 450 V | 400 V |
| Vce Saturation (Max) @ Ib, Ic | 1.5V @ 500mA, 2.5A | 1.5V @ 1.2A, 6A | 1.5V @ 600mA, 3A |
| Current - Collector Cutoff (Max) | 1mA | 1mA | 1mA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | - | - | - |
| Power - Max | 100 W | 100 W | 100 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 | TO-220-3 |
| Supplier Device Package | TO-220-3 | TO-220-3 | TO-220-3 |
