| PartNumber | FDPF51N25 | FDPF51N25YDTU | FDPF51N25RDTU |
| Description | MOSFET 250V N-Channel MOSFET | MOSFET 250V 28A N-CH UNIFET | MOSFET UniFET 250V |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | MOSFET | MOSFET | MOSFET |
| RoHS | E | Y | Y |
| Technology | Si | Si | Si |
| Mounting Style | Through Hole | Through Hole | Through Hole |
| Package / Case | TO-220FP-3 | TO-220-3 | TO-220FP-3 |
| Number of Channels | 1 Channel | 1 Channel | - |
| Transistor Polarity | N-Channel | N-Channel | - |
| Vds Drain Source Breakdown Voltage | 250 V | 250 V | - |
| Id Continuous Drain Current | 28 A | 51 A | - |
| Rds On Drain Source Resistance | 60 mOhms | 60 mOhms | - |
| Vgs Gate Source Voltage | 30 V | 30 V | - |
| Minimum Operating Temperature | - 55 C | - 55 C | - |
| Maximum Operating Temperature | + 150 C | + 150 C | - |
| Pd Power Dissipation | 38 W | 38 W | - |
| Configuration | Single | Single | - |
| Channel Mode | Enhancement | Enhancement | - |
| Tradename | UniFET | - | UniFET |
| Packaging | Tube | Tube | Tube |
| Height | 16.07 mm | 16.3 mm | 16.07 mm |
| Length | 10.36 mm | 10.67 mm | 10.36 mm |
| Series | FDPF51N25 | FDPF51N25 | FDPF51N25RDTU |
| Transistor Type | 1 N-Channel | 1 N-Channel | - |
| Type | MOSFET | - | - |
| Width | 4.9 mm | 4.7 mm | 4.9 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Forward Transconductance Min | 43 S | - | - |
| Fall Time | 130 ns | 130 ns | - |
| Product Type | MOSFET | MOSFET | MOSFET |
| Rise Time | 465 ns | 465 ns | - |
| Factory Pack Quantity | 1000 | 800 | 800 |
| Subcategory | MOSFETs | MOSFETs | MOSFETs |
| Typical Turn Off Delay Time | 98 ns | 98 ns | - |
| Typical Turn On Delay Time | 62 ns | 62 ns | - |
| Unit Weight | 0.080072 oz | 0.090478 oz | 0.090478 oz |