| Equivalent | SI9959DY-SMD | |
| Type | Transistor N Channel MOSFET | |
| Case | SMD | |
| Manufacturer | Siliconix | |
| Vbr DSS | 50 | |
| Vbr GSS | 20 | |
| Max. PD (W) | 2.0 | |
| td(on) Max (S) | 40n | |
| t(f) Max. (S) | 70n | |
| gfs Min | 2.5- | |
| Id Max. (A) | 2.0 | |
| I(d) for G(fs) | 2.0 | |
| Tr Max. (s) | 70n | |
| R(ds) On (Û) | 500m | |
| t(stor) Max. (S) | 100n | |
| Vp Max. | 3.0 | |
| Oper. Temp (°C) Max. | 150 | |
| Pinout Equivalence Number | 8-44 | |
| Surface Mounted Yes/No | YES | |
| SKU | 443152 | |