| PartNumber | FQD4P40TM | FQD4P25TM-WS | FQD4P25TM-TWS |
| Description | MOSFET 400V P-Channel QFET | MOSFET 250V 3.1A 2.1Ohm P-Channel | MOSFET P-CH/250V/3.1A/ 2.1OHM |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | MOSFET | MOSFET | MOSFET |
| RoHS | E | Y | - |
| Technology | Si | Si | Si |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TO-252-3 | TO-252-3 | TO-252-3 |
| Number of Channels | 1 Channel | 1 Channel | - |
| Transistor Polarity | P-Channel | P-Channel | - |
| Vds Drain Source Breakdown Voltage | 400 V | 250 V | - |
| Id Continuous Drain Current | 2.7 A | 3.1 A | - |
| Rds On Drain Source Resistance | 3.1 Ohms | 2.1 Ohms | - |
| 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 | 2.5 W | 45 W | - |
| Configuration | Single | Single | - |
| Channel Mode | Enhancement | Enhancement | - |
| Packaging | Reel | Reel | Reel |
| Height | 2.39 mm | 2.39 mm | 2.39 mm |
| Length | 6.73 mm | 6.73 mm | 6.73 mm |
| Series | FQD4P40 | FQD4P25TM_WS | - |
| Transistor Type | 1 P-Channel | 1 P-Channel | - |
| Type | MOSFET | - | - |
| Width | 6.22 mm | 6.22 mm | 6.22 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Forward Transconductance Min | 2.5 S | - | - |
| Fall Time | 37 ns | 27 ns | - |
| Product Type | MOSFET | MOSFET | MOSFET |
| Rise Time | 55 ns | 60 ns | - |
| Factory Pack Quantity | 2500 | 2500 | 2500 |
| Subcategory | MOSFETs | MOSFETs | MOSFETs |
| Typical Turn Off Delay Time | 35 ns | 14 ns | - |
| Typical Turn On Delay Time | 13 ns | 9.5 ns | - |
| Unit Weight | 0.009184 oz | 0.009184 oz | 0.011993 oz |
| Tradename | - | QFET | - |
| Part # Aliases | - | FQD4P25TM_WS | FQD4P25TM_TWS |