| Technical/Catalog Information | BSP51 |
| Vendor | Fairchild Semiconductor |
| Category | Discrete Semiconductor Products |
| Transistor Type | NPN - Darlington |
| Voltage - Collector Emitter Breakdown (Max) | 80V |
| Current - Collector (Ic) (Max) | 500mA |
| Power - Max | 1W |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 1000 @ 150mA, 10V |
| Vce Saturation (Max) @ Ib, Ic | 1.3V @ 500A, 500mA |
| Frequency - Transition | - |
| Current - Collector Cutoff (Max) | 10A |
| Mounting Type | Surface Mount |
| Package / Case | SOT-223, SC-73, TO-261 (3 Leads + Tab) |
| Packaging | Tape & Reel (TR) |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | BSP51 BSP51 |