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| PartNumber | FQA20N40 | FQA20N50 | FQA20N50 SMK2050CI |
| Description | MOSFET 400V N-Channel QFET | ||
| Manufacturer | ON Semiconductor | - | - |
| Product Category | MOSFET | - | - |
| RoHS | Y | - | - |
| Technology | Si | - | - |
| Mounting Style | Through Hole | - | - |
| Package / Case | TO-3PN-3 | - | - |
| Number of Channels | 1 Channel | - | - |
| Transistor Polarity | N-Channel | - | - |
| Vds Drain Source Breakdown Voltage | 400 V | - | - |
| Id Continuous Drain Current | 19.5 A | - | - |
| Rds On Drain Source Resistance | 220 mOhms | - | - |
| Vgs Gate Source Voltage | 30 V | - | - |
| Minimum Operating Temperature | - 55 C | - | - |
| Maximum Operating Temperature | + 150 C | - | - |
| Pd Power Dissipation | 200 W | - | - |
| Configuration | Single | - | - |
| Channel Mode | Enhancement | - | - |
| Packaging | Tube | - | - |
| Height | 20.1 mm | - | - |
| Length | 16.2 mm | - | - |
| Transistor Type | 1 N-Channel | - | - |
| Type | MOSFET | - | - |
| Width | 5 mm | - | - |
| Brand | ON Semiconductor / Fairchild | - | - |
| Forward Transconductance Min | 15 S | - | - |
| Fall Time | 110 ns | - | - |
| Product Type | MOSFET | - | - |
| Rise Time | 210 ns | - | - |
| Factory Pack Quantity | 450 | - | - |
| Subcategory | MOSFETs | - | - |
| Typical Turn Off Delay Time | 130 ns | - | - |
| Typical Turn On Delay Time | 45 ns | - | - |
| Part # Aliases | FQA20N40_NL | - | - |
| Unit Weight | 0.000194 oz | - | - |
