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| Part Number | BD743B-S |
| Description | TRANS NPN 80V 15A |
| Manufacturer | Bourns Inc. |
| Series | - |
| Part Status | Obsolete |
| Transistor Type | NPN |
| Current - Collector (Ic) (Max) | 15A |
| Voltage - Collector Emitter Breakdown (Max) | 80V |
| Vce Saturation (Max) @ Ib, Ic | 3V @ 5A, 15A |
| Current - Collector Cutoff (Max) | 1µA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 20 @ 5A, 4V |
| Power - Max | 2W |
| Frequency - Transition | - |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | TO-220-3 |
| Supplier Device Package | TO-220 |